./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme --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 b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:59:15,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:59:15,154 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:59:15,166 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:59:15,167 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:59:15,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:59:15,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:59:15,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:59:15,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:59:15,214 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:59:15,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:59:15,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:59:15,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:59:15,219 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:59:15,219 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:59:15,220 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:59:15,220 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:59:15,221 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:59:15,221 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:59:15,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:59:15,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:59:15,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:59:15,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:59:15,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:59:15,224 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:59:15,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:59:15,225 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:59:15,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:59:15,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:59:15,227 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:59:15,229 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:59:15,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:59:15,230 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:59:15,230 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:59:15,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:59:15,231 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:59:15,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:59:15,231 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:59:15,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:59:15,232 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:59:15,232 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:59:15,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:59:15,233 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_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 [2023-11-26 11:59:15,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:59:15,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:59:15,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:59:15,533 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:59:15,534 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:59:15,535 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2023-11-26 11:59:18,617 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:59:19,032 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:59:19,032 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2023-11-26 11:59:19,060 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/data/71b59faea/2c4eb12273f2459093f407cbae348177/FLAGd25b84a26 [2023-11-26 11:59:19,077 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/data/71b59faea/2c4eb12273f2459093f407cbae348177 [2023-11-26 11:59:19,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:59:19,081 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:59:19,082 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:59:19,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:59:19,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:59:19,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:59:19" (1/1) ... [2023-11-26 11:59:19,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2909d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:19, skipping insertion in model container [2023-11-26 11:59:19,091 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:59:19" (1/1) ... [2023-11-26 11:59:19,188 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:59:19,892 WARN L240 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_c0c0e786-0bc0-48ee-9aa5-5896a096c022/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c[66510,66523] [2023-11-26 11:59:19,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:59:19,931 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:59:19,962 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2023-11-26 11:59:19,964 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1575] [2023-11-26 11:59:19,964 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1934] [2023-11-26 11:59:19,964 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2300] [2023-11-26 11:59:19,965 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2391] [2023-11-26 11:59:19,965 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2404] [2023-11-26 11:59:19,965 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2439] [2023-11-26 11:59:19,965 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3105] [2023-11-26 11:59:19,966 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3114] [2023-11-26 11:59:19,966 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3232] [2023-11-26 11:59:20,059 WARN L240 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_c0c0e786-0bc0-48ee-9aa5-5896a096c022/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c[66510,66523] [2023-11-26 11:59:20,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:59:20,094 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:59:20,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:20 WrapperNode [2023-11-26 11:59:20,095 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:59:20,097 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:59:20,097 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:59:20,097 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:59:20,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:20" (1/1) ... [2023-11-26 11:59:20,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:20" (1/1) ... [2023-11-26 11:59:20,186 INFO L138 Inliner]: procedures = 92, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 849 [2023-11-26 11:59:20,187 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:59:20,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:59:20,188 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:59:20,188 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:59:20,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:20" (1/1) ... [2023-11-26 11:59:20,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:20" (1/1) ... [2023-11-26 11:59:20,207 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:20" (1/1) ... [2023-11-26 11:59:20,243 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 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]. [2023-11-26 11:59:20,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:20" (1/1) ... [2023-11-26 11:59:20,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:20" (1/1) ... [2023-11-26 11:59:20,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:20" (1/1) ... [2023-11-26 11:59:20,285 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:20" (1/1) ... [2023-11-26 11:59:20,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:20" (1/1) ... [2023-11-26 11:59:20,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:20" (1/1) ... [2023-11-26 11:59:20,309 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:59:20,310 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:59:20,311 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:59:20,311 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:59:20,312 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:20" (1/1) ... [2023-11-26 11:59:20,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:59:20,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:20,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:20,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:59:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-26 11:59:20,418 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-26 11:59:20,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:59:20,418 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-26 11:59:20,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-26 11:59:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-26 11:59:20,419 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-26 11:59:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-26 11:59:20,419 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-26 11:59:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-26 11:59:20,420 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-26 11:59:20,420 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-26 11:59:20,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-26 11:59:20,420 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-26 11:59:20,420 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-26 11:59:20,421 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-26 11:59:20,421 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-26 11:59:20,421 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-26 11:59:20,421 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-26 11:59:20,421 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-26 11:59:20,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-26 11:59:20,422 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-26 11:59:20,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-26 11:59:20,422 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-26 11:59:20,422 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-26 11:59:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-26 11:59:20,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-26 11:59:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-26 11:59:20,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-26 11:59:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-26 11:59:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-26 11:59:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-26 11:59:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-26 11:59:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-26 11:59:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-26 11:59:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-26 11:59:20,425 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-26 11:59:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-26 11:59:20,425 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-26 11:59:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:59:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:59:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:59:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:59:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:59:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:59:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:59:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:59:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 11:59:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-26 11:59:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-26 11:59:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-26 11:59:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-26 11:59:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-26 11:59:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-26 11:59:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-26 11:59:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-26 11:59:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-26 11:59:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-26 11:59:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-26 11:59:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-26 11:59:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-26 11:59:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-26 11:59:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-26 11:59:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-26 11:59:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-26 11:59:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-26 11:59:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-26 11:59:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-11-26 11:59:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-11-26 11:59:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:59:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:59:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-26 11:59:20,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-26 11:59:20,637 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:59:20,641 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:59:21,869 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:59:22,006 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:59:22,006 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:59:22,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:22 BoogieIcfgContainer [2023-11-26 11:59:22,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:59:22,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:59:22,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:59:22,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:59:22,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:59:19" (1/3) ... [2023-11-26 11:59:22,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b05475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:59:22, skipping insertion in model container [2023-11-26 11:59:22,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:20" (2/3) ... [2023-11-26 11:59:22,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b05475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:59:22, skipping insertion in model container [2023-11-26 11:59:22,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:22" (3/3) ... [2023-11-26 11:59:22,021 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product21.cil.c [2023-11-26 11:59:22,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:59:22,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:59:22,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:59:22,140 INFO L357 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, mHoare=true, 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;@1004b902, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:59:22,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:59:22,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 549 states, 424 states have (on average 1.724056603773585) internal successors, (731), 445 states have internal predecessors, (731), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-26 11:59:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-26 11:59:22,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:59:22,213 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:59:22,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:59:22,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:22,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2117064069, now seen corresponding path program 1 times [2023-11-26 11:59:22,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:22,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022702566] [2023-11-26 11:59:22,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:22,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:23,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:59:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:23,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:59:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:23,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:59:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:23,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:59:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:23,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:59:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:23,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:59:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:59:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:59:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:24,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:59:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:24,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:59:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:24,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:59:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:24,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:59:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:24,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:59:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-26 11:59:24,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:24,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022702566] [2023-11-26 11:59:24,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022702566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:24,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:59:24,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-26 11:59:24,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326447269] [2023-11-26 11:59:24,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:24,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 11:59:24,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:24,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 11:59:24,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:59:24,796 INFO L87 Difference]: Start difference. First operand has 549 states, 424 states have (on average 1.724056603773585) internal successors, (731), 445 states have internal predecessors, (731), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 11:59:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:59:40,022 INFO L93 Difference]: Finished difference Result 1389 states and 2394 transitions. [2023-11-26 11:59:40,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 11:59:40,038 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2023-11-26 11:59:40,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:59:40,075 INFO L225 Difference]: With dead ends: 1389 [2023-11-26 11:59:40,075 INFO L226 Difference]: Without dead ends: 840 [2023-11-26 11:59:40,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2023-11-26 11:59:40,094 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1029 mSDsluCounter, 4068 mSDsCounter, 0 mSdLazyCounter, 8453 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 8704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 8453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:59:40,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 4539 Invalid, 8704 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [251 Valid, 8453 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-11-26 11:59:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2023-11-26 11:59:40,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 552. [2023-11-26 11:59:40,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 427 states have (on average 1.7049180327868851) internal successors, (728), 446 states have internal predecessors, (728), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (98), 93 states have call predecessors, (98), 93 states have call successors, (98) [2023-11-26 11:59:40,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 924 transitions. [2023-11-26 11:59:40,442 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 924 transitions. Word has length 101 [2023-11-26 11:59:40,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:59:40,442 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 924 transitions. [2023-11-26 11:59:40,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 11:59:40,443 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 924 transitions. [2023-11-26 11:59:40,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-26 11:59:40,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:59:40,453 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:59:40,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:59:40,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:59:40,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:40,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1908518355, now seen corresponding path program 1 times [2023-11-26 11:59:40,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:40,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678654346] [2023-11-26 11:59:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:40,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:40,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:59:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:40,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:59:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:40,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:59:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:59:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:40,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:59:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:40,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:59:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:41,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:59:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:41,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:59:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:41,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:59:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:41,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:59:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:41,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:59:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:41,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 11:59:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:41,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:59:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 11:59:41,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:41,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678654346] [2023-11-26 11:59:41,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678654346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:41,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:59:41,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-26 11:59:41,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258270724] [2023-11-26 11:59:41,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:41,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:59:41,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:41,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:59:41,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:59:41,766 INFO L87 Difference]: Start difference. First operand 552 states and 924 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 11:59:54,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:59:54,627 INFO L93 Difference]: Finished difference Result 1396 states and 2383 transitions. [2023-11-26 11:59:54,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 11:59:54,628 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2023-11-26 11:59:54,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:59:54,638 INFO L225 Difference]: With dead ends: 1396 [2023-11-26 11:59:54,638 INFO L226 Difference]: Without dead ends: 847 [2023-11-26 11:59:54,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:59:54,644 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1441 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 7503 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 4006 SdHoareTripleChecker+Invalid, 7882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 7503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:59:54,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 4006 Invalid, 7882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [379 Valid, 7503 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-11-26 11:59:54,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-11-26 11:59:54,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 553. [2023-11-26 11:59:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 428 states have (on average 1.7009345794392523) internal successors, (728), 446 states have internal predecessors, (728), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (98), 94 states have call predecessors, (98), 93 states have call successors, (98) [2023-11-26 11:59:54,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 924 transitions. [2023-11-26 11:59:54,807 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 924 transitions. Word has length 105 [2023-11-26 11:59:54,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:59:54,807 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 924 transitions. [2023-11-26 11:59:54,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 11:59:54,808 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 924 transitions. [2023-11-26 11:59:54,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-26 11:59:54,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:59:54,815 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:59:54,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:59:54,815 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:59:54,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:54,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1091757423, now seen corresponding path program 1 times [2023-11-26 11:59:54,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:54,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966439808] [2023-11-26 11:59:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:54,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:59:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:59:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:59:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:59:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:59:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:59:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:59:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:59:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:59:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:59:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:59:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 11:59:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:59:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 11:59:55,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:55,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966439808] [2023-11-26 11:59:55,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966439808] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:59:55,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488816847] [2023-11-26 11:59:55,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:55,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:55,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:55,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:59:55,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:59:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:56,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:59:56,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 11:59:56,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:59:56,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488816847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:56,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:59:56,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-26 11:59:56,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730764960] [2023-11-26 11:59:56,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:56,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:59:56,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:59:56,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:59:56,477 INFO L87 Difference]: Start difference. First operand 553 states and 924 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 11:59:56,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:59:56,753 INFO L93 Difference]: Finished difference Result 1110 states and 1855 transitions. [2023-11-26 11:59:56,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:59:56,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2023-11-26 11:59:56,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:59:56,760 INFO L225 Difference]: With dead ends: 1110 [2023-11-26 11:59:56,760 INFO L226 Difference]: Without dead ends: 562 [2023-11-26 11:59:56,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:59:56,765 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 20 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:59:56,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2657 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:59:56,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-26 11:59:56,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2023-11-26 11:59:56,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 436 states have (on average 1.6972477064220184) internal successors, (740), 454 states have internal predecessors, (740), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (98), 94 states have call predecessors, (98), 93 states have call successors, (98) [2023-11-26 11:59:56,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 936 transitions. [2023-11-26 11:59:56,926 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 936 transitions. Word has length 107 [2023-11-26 11:59:56,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:59:56,927 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 936 transitions. [2023-11-26 11:59:56,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 11:59:56,927 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 936 transitions. [2023-11-26 11:59:56,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-26 11:59:56,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:59:56,932 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:59:56,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:57,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:57,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:59:57,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:57,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1861460595, now seen corresponding path program 1 times [2023-11-26 11:59:57,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:57,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136312446] [2023-11-26 11:59:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:57,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:57,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:59:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:57,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:59:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:57,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:59:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:57,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:59:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:57,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:59:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:57,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:59:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:57,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 11:59:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:59:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:58,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:59:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:58,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:59:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:58,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:59:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:58,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 11:59:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:58,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:59:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 11:59:58,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:58,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136312446] [2023-11-26 11:59:58,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136312446] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:59:58,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569562556] [2023-11-26 11:59:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:58,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:58,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:58,165 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:59:58,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:59:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:58,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:59:58,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 11:59:58,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:59:58,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569562556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:58,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:59:58,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-26 11:59:58,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252482315] [2023-11-26 11:59:58,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:58,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:59:58,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:58,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:59:58,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:59:58,686 INFO L87 Difference]: Start difference. First operand 562 states and 936 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 11:59:58,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:59:58,934 INFO L93 Difference]: Finished difference Result 1112 states and 1856 transitions. [2023-11-26 11:59:58,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:59:58,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2023-11-26 11:59:58,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:59:58,941 INFO L225 Difference]: With dead ends: 1112 [2023-11-26 11:59:58,942 INFO L226 Difference]: Without dead ends: 562 [2023-11-26 11:59:58,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:59:58,947 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 18 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:59:58,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2657 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:59:58,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-26 11:59:59,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2023-11-26 11:59:59,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 436 states have (on average 1.694954128440367) internal successors, (739), 454 states have internal predecessors, (739), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (98), 94 states have call predecessors, (98), 93 states have call successors, (98) [2023-11-26 11:59:59,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 935 transitions. [2023-11-26 11:59:59,106 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 935 transitions. Word has length 108 [2023-11-26 11:59:59,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:59:59,107 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 935 transitions. [2023-11-26 11:59:59,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 11:59:59,107 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 935 transitions. [2023-11-26 11:59:59,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-26 11:59:59,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:59:59,113 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:59:59,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:59,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:59,323 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:59:59,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:59,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2109626645, now seen corresponding path program 1 times [2023-11-26 11:59:59,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:59,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521300425] [2023-11-26 11:59:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:59,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:59:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:59:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 11:59:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:59:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:59:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:59:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 12:00:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:00:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:00:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 12:00:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 12:00:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 12:00:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 12:00:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 12:00:00,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:00,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521300425] [2023-11-26 12:00:00,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521300425] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:00,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530340535] [2023-11-26 12:00:00,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:00,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:00,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:00:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:00:00,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 12:00:00,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:00,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530340535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:00,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:00:00,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-26 12:00:00,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407280928] [2023-11-26 12:00:00,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:00,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:00,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:00,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:00,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:00:00,855 INFO L87 Difference]: Start difference. First operand 562 states and 935 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 12:00:01,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:01,114 INFO L93 Difference]: Finished difference Result 1112 states and 1855 transitions. [2023-11-26 12:00:01,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:01,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2023-11-26 12:00:01,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:01,121 INFO L225 Difference]: With dead ends: 1112 [2023-11-26 12:00:01,121 INFO L226 Difference]: Without dead ends: 562 [2023-11-26 12:00:01,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:00:01,126 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 17 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:01,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2657 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:00:01,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-26 12:00:01,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2023-11-26 12:00:01,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 436 states have (on average 1.6926605504587156) internal successors, (738), 454 states have internal predecessors, (738), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (98), 94 states have call predecessors, (98), 93 states have call successors, (98) [2023-11-26 12:00:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 934 transitions. [2023-11-26 12:00:01,287 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 934 transitions. Word has length 109 [2023-11-26 12:00:01,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:01,287 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 934 transitions. [2023-11-26 12:00:01,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 12:00:01,288 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 934 transitions. [2023-11-26 12:00:01,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-26 12:00:01,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:01,293 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 12:00:01,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:01,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:01,502 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:01,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:01,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1573605999, now seen corresponding path program 1 times [2023-11-26 12:00:01,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:01,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186821674] [2023-11-26 12:00:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:01,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:01,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:00:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:01,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:00:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:01,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 12:00:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:01,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 12:00:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:01,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:00:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:01,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:00:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 12:00:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:00:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:00:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 12:00:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 12:00:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 12:00:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 12:00:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 12:00:02,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:02,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186821674] [2023-11-26 12:00:02,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186821674] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:02,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352929773] [2023-11-26 12:00:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:02,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:02,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:02,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:02,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:00:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:00:02,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:03,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:03,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352929773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:03,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:00:03,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-26 12:00:03,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355879016] [2023-11-26 12:00:03,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:03,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:00:03,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:03,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:00:03,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:00:03,013 INFO L87 Difference]: Start difference. First operand 562 states and 934 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 12:00:03,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:03,375 INFO L93 Difference]: Finished difference Result 1130 states and 1884 transitions. [2023-11-26 12:00:03,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:00:03,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2023-11-26 12:00:03,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:00:03,382 INFO L225 Difference]: With dead ends: 1130 [2023-11-26 12:00:03,382 INFO L226 Difference]: Without dead ends: 584 [2023-11-26 12:00:03,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:00:03,387 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 146 mSDsluCounter, 4339 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 5228 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:00:03,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 5228 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:00:03,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-11-26 12:00:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 580. [2023-11-26 12:00:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 451 states have (on average 1.6917960088691797) internal successors, (763), 471 states have internal predecessors, (763), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (102), 95 states have call predecessors, (102), 94 states have call successors, (102) [2023-11-26 12:00:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 964 transitions. [2023-11-26 12:00:03,558 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 964 transitions. Word has length 110 [2023-11-26 12:00:03,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:00:03,559 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 964 transitions. [2023-11-26 12:00:03,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 12:00:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 964 transitions. [2023-11-26 12:00:03,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-26 12:00:03,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:00:03,565 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 12:00:03,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 12:00:03,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 12:00:03,774 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:00:03,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:03,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1058085550, now seen corresponding path program 1 times [2023-11-26 12:00:03,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:03,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873501375] [2023-11-26 12:00:03,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:03,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:00:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:00:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 12:00:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 12:00:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:00:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:00:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 12:00:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:00:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:00:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 12:00:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 12:00:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 12:00:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 12:00:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:04,699 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 12:00:04,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:04,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873501375] [2023-11-26 12:00:04,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873501375] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:04,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93006999] [2023-11-26 12:00:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:04,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:04,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:04,701 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:04,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0c0e786-0bc0-48ee-9aa5-5896a096c022/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process