./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu --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 6f20249a191004f50add5285446ee5ffba043f1ff9b40e0e115c641082e595e2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:29,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:29,230 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:05:29,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:29,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:29,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:29,260 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:29,261 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:29,262 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:29,262 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:29,263 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:29,264 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:29,264 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:29,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:29,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:29,266 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:29,267 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:29,267 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:29,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:29,268 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:29,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:29,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:29,270 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:29,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:29,271 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:29,272 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:29,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:29,273 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:29,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:29,274 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:29,274 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:29,275 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:29,275 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:29,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:29,277 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:29,277 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:29,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:29,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:29,279 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:29,279 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_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f20249a191004f50add5285446ee5ffba043f1ff9b40e0e115c641082e595e2 [2023-11-19 08:05:29,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:29,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:29,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:29,596 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:29,597 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:29,599 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c [2023-11-19 08:05:32,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:33,108 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:33,109 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091843b0-8834-4044-8ab6-16df9c2f7058/sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c [2023-11-19 08:05:33,149 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu/data/384886f3f/e61867a807f54fd599e780ebc3401161/FLAGd9d3260ff [2023-11-19 08:05:33,166 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu/data/384886f3f/e61867a807f54fd599e780ebc3401161 [2023-11-19 08:05:33,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:33,174 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:33,179 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:33,179 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:33,184 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:33,185 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:33" (1/1) ... [2023-11-19 08:05:33,186 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b93f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:33, skipping insertion in model container [2023-11-19 08:05:33,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:33" (1/1) ... [2023-11-19 08:05:33,276 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:33,512 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_091843b0-8834-4044-8ab6-16df9c2f7058/sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c[17414,17427] [2023-11-19 08:05:33,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:33,920 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:33,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2023-11-19 08:05:33,932 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [716] [2023-11-19 08:05:33,933 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [725] [2023-11-19 08:05:33,934 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [739] [2023-11-19 08:05:33,934 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [905] [2023-11-19 08:05:33,935 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2574] [2023-11-19 08:05:33,935 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2940] [2023-11-19 08:05:33,936 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2978] [2023-11-19 08:05:33,936 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3330] [2023-11-19 08:05:33,936 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3448] [2023-11-19 08:05:33,972 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_091843b0-8834-4044-8ab6-16df9c2f7058/sv-benchmarks/c/product-lines/elevator_spec9_product32.cil.c[17414,17427] [2023-11-19 08:05:34,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:34,192 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:34,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34 WrapperNode [2023-11-19 08:05:34,193 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:34,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:34,194 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:34,194 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:34,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,311 INFO L138 Inliner]: procedures = 99, calls = 352, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 933 [2023-11-19 08:05:34,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:34,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:34,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:34,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:34,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,359 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,389 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:34,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:34,416 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:34,416 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:34,417 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:34,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:34,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:34,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091843b0-8834-4044-8ab6-16df9c2f7058/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:34,530 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-19 08:05:34,532 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-19 08:05:34,532 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-19 08:05:34,533 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-19 08:05:34,533 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-19 08:05:34,533 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-19 08:05:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-11-19 08:05:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-11-19 08:05:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-19 08:05:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-19 08:05:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-19 08:05:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-19 08:05:34,535 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-19 08:05:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-19 08:05:34,536 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-19 08:05:34,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-19 08:05:34,536 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-19 08:05:34,536 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-19 08:05:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-19 08:05:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-19 08:05:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-19 08:05:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-19 08:05:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-19 08:05:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-19 08:05:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-19 08:05:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-19 08:05:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-19 08:05:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-19 08:05:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-19 08:05:34,542 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-19 08:05:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-19 08:05:34,542 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-19 08:05:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-19 08:05:34,542 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-19 08:05:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-19 08:05:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-19 08:05:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-19 08:05:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-19 08:05:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-19 08:05:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-19 08:05:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-19 08:05:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-19 08:05:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-19 08:05:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-19 08:05:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-19 08:05:34,545 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-19 08:05:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-19 08:05:34,545 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-19 08:05:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-11-19 08:05:34,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-11-19 08:05:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-19 08:05:34,546 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-19 08:05:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-19 08:05:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-19 08:05:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-11-19 08:05:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-11-19 08:05:34,754 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:34,756 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:36,184 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:36,211 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:36,211 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:05:36,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:36 BoogieIcfgContainer [2023-11-19 08:05:36,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:36,235 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:36,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:36,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:36,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:33" (1/3) ... [2023-11-19 08:05:36,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1002f05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:36, skipping insertion in model container [2023-11-19 08:05:36,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (2/3) ... [2023-11-19 08:05:36,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1002f05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:36, skipping insertion in model container [2023-11-19 08:05:36,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:36" (3/3) ... [2023-11-19 08:05:36,244 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product32.cil.c [2023-11-19 08:05:36,274 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:36,274 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:05:36,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:36,388 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;@6b16a35e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:36,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:05:36,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 600 states, 467 states have (on average 1.676659528907923) internal successors, (783), 490 states have internal predecessors, (783), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (103), 96 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-19 08:05:36,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-19 08:05:36,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:36,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:36,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:36,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:36,435 INFO L85 PathProgramCache]: Analyzing trace with hash -91382860, now seen corresponding path program 1 times [2023-11-19 08:05:36,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:36,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910251529] [2023-11-19 08:05:36,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:36,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:37,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:37,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:05:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 08:05:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:37,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 08:05:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:38,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:05:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:38,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:05:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:38,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:05:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:38,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:05:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:38,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:38,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910251529] [2023-11-19 08:05:38,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910251529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:38,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:38,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:38,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415047192] [2023-11-19 08:05:38,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:38,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:38,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:38,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:38,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:38,089 INFO L87 Difference]: Start difference. First operand has 600 states, 467 states have (on average 1.676659528907923) internal successors, (783), 490 states have internal predecessors, (783), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (103), 96 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 08:05:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:45,683 INFO L93 Difference]: Finished difference Result 1334 states and 2232 transitions. [2023-11-19 08:05:45,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:45,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2023-11-19 08:05:45,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:45,769 INFO L225 Difference]: With dead ends: 1334 [2023-11-19 08:05:45,770 INFO L226 Difference]: Without dead ends: 746 [2023-11-19 08:05:45,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:05:45,793 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 737 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 2898 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:45,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1140 Invalid, 3016 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 2898 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-19 08:05:45,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-11-19 08:05:46,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 592. [2023-11-19 08:05:46,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 461 states have (on average 1.6724511930585684) internal successors, (771), 482 states have internal predecessors, (771), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-19 08:05:46,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 972 transitions. [2023-11-19 08:05:46,092 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 972 transitions. Word has length 62 [2023-11-19 08:05:46,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:46,093 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 972 transitions. [2023-11-19 08:05:46,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 08:05:46,094 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 972 transitions. [2023-11-19 08:05:46,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 08:05:46,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:46,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:46,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:05:46,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:46,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:46,101 INFO L85 PathProgramCache]: Analyzing trace with hash -19769421, now seen corresponding path program 1 times [2023-11-19 08:05:46,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:46,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912094987] [2023-11-19 08:05:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:46,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:46,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:46,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:05:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:46,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-19 08:05:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:47,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:05:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:47,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:05:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:47,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:05:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:47,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:05:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:47,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:47,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912094987] [2023-11-19 08:05:47,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912094987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:47,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:47,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:47,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055898598] [2023-11-19 08:05:47,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:47,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:47,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:47,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:47,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:47,034 INFO L87 Difference]: Start difference. First operand 592 states and 972 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 08:05:53,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:53,691 INFO L93 Difference]: Finished difference Result 1320 states and 2198 transitions. [2023-11-19 08:05:53,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:53,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2023-11-19 08:05:53,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:53,702 INFO L225 Difference]: With dead ends: 1320 [2023-11-19 08:05:53,702 INFO L226 Difference]: Without dead ends: 746 [2023-11-19 08:05:53,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:05:53,708 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1227 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 2725 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:53,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 1092 Invalid, 3001 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [276 Valid, 2725 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-19 08:05:53,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-11-19 08:05:53,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 592. [2023-11-19 08:05:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 461 states have (on average 1.6702819956616053) internal successors, (770), 482 states have internal predecessors, (770), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-19 08:05:53,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 971 transitions. [2023-11-19 08:05:53,851 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 971 transitions. Word has length 65 [2023-11-19 08:05:53,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:53,852 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 971 transitions. [2023-11-19 08:05:53,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 08:05:53,852 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 971 transitions. [2023-11-19 08:05:53,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 08:05:53,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:53,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:53,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:05:53,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:53,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:53,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1811288764, now seen corresponding path program 1 times [2023-11-19 08:05:53,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:53,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783589212] [2023-11-19 08:05:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:53,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:54,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:05:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:54,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:05:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:54,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:05:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:54,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-19 08:05:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:54,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:05:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:54,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:05:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:54,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:05:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:54,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:05:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:54,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:54,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783589212] [2023-11-19 08:05:54,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783589212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:54,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:54,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:54,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584404515] [2023-11-19 08:05:54,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:54,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:54,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:54,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:54,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:54,607 INFO L87 Difference]: Start difference. First operand 592 states and 971 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 08:06:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:01,464 INFO L93 Difference]: Finished difference Result 1320 states and 2197 transitions. [2023-11-19 08:06:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:01,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2023-11-19 08:06:01,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:01,477 INFO L225 Difference]: With dead ends: 1320 [2023-11-19 08:06:01,477 INFO L226 Difference]: Without dead ends: 746 [2023-11-19 08:06:01,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:06:01,482 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 731 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 3008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:01,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1106 Invalid, 3008 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-19 08:06:01,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-11-19 08:06:01,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 592. [2023-11-19 08:06:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 461 states have (on average 1.668112798264642) internal successors, (769), 482 states have internal predecessors, (769), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-19 08:06:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 970 transitions. [2023-11-19 08:06:01,625 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 970 transitions. Word has length 66 [2023-11-19 08:06:01,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:01,626 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 970 transitions. [2023-11-19 08:06:01,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 08:06:01,627 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 970 transitions. [2023-11-19 08:06:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 08:06:01,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:01,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:01,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:06:01,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:01,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:01,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1562866511, now seen corresponding path program 1 times [2023-11-19 08:06:01,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:01,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634495755] [2023-11-19 08:06:01,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:01,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:01,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:06:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:01,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:06:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:02,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 08:06:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 08:06:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:02,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:06:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:02,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:06:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:02,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:06:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:02,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:06:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:02,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:02,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634495755] [2023-11-19 08:06:02,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634495755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:02,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:02,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:06:02,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395380889] [2023-11-19 08:06:02,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:02,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:06:02,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:02,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:06:02,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:06:02,451 INFO L87 Difference]: Start difference. First operand 592 states and 970 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 08:06:09,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:09,093 INFO L93 Difference]: Finished difference Result 1320 states and 2196 transitions. [2023-11-19 08:06:09,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:09,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2023-11-19 08:06:09,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:09,102 INFO L225 Difference]: With dead ends: 1320 [2023-11-19 08:06:09,103 INFO L226 Difference]: Without dead ends: 746 [2023-11-19 08:06:09,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:06:09,108 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 729 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 2876 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 2996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:09,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 1106 Invalid, 2996 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2876 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-19 08:06:09,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-11-19 08:06:09,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 592. [2023-11-19 08:06:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 461 states have (on average 1.665943600867679) internal successors, (768), 482 states have internal predecessors, (768), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-19 08:06:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 969 transitions. [2023-11-19 08:06:09,263 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 969 transitions. Word has length 67 [2023-11-19 08:06:09,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:09,264 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 969 transitions. [2023-11-19 08:06:09,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 08:06:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 969 transitions. [2023-11-19 08:06:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 08:06:09,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:09,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:09,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:06:09,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:09,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:09,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1864177696, now seen corresponding path program 1 times [2023-11-19 08:06:09,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:09,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113845800] [2023-11-19 08:06:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:09,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:06:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:09,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:06:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:09,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:06:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:09,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-19 08:06:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:09,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:06:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:10,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:06:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:10,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:06:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:10,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:06:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:10,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:10,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113845800] [2023-11-19 08:06:10,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113845800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:10,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:10,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 08:06:10,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063049609] [2023-11-19 08:06:10,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:10,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:06:10,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:10,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:06:10,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:06:10,087 INFO L87 Difference]: Start difference. First operand 592 states and 969 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 08:06:18,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:18,031 INFO L93 Difference]: Finished difference Result 1328 states and 2211 transitions. [2023-11-19 08:06:18,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:06:18,032 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2023-11-19 08:06:18,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:18,039 INFO L225 Difference]: With dead ends: 1328 [2023-11-19 08:06:18,039 INFO L226 Difference]: Without dead ends: 754 [2023-11-19 08:06:18,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:06:18,045 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 1267 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 5141 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 5424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:18,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 1929 Invalid, 5424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 5141 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-11-19 08:06:18,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-11-19 08:06:18,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 596. [2023-11-19 08:06:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 464 states have (on average 1.6594827586206897) internal successors, (770), 485 states have internal predecessors, (770), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2023-11-19 08:06:18,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 973 transitions. [2023-11-19 08:06:18,222 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 973 transitions. Word has length 68 [2023-11-19 08:06:18,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:18,222 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 973 transitions. [2023-11-19 08:06:18,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 08:06:18,223 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 973 transitions. [2023-11-19 08:06:18,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 08:06:18,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:18,225 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:06:18,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:06:18,227 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:18,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:18,228 INFO L85 PathProgramCache]: Analyzing trace with hash -815196216, now seen corresponding path program 1 times [2023-11-19 08:06:18,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:18,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124636219] [2023-11-19 08:06:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:18,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:18,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:06:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:18,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:06:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:18,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:06:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:19,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 08:06:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:19,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:06:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:19,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:06:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:19,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:06:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:06:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:19,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 08:06:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 08:06:19,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:19,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124636219] [2023-11-19 08:06:19,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124636219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:19,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:19,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 08:06:19,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237221198] [2023-11-19 08:06:19,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:19,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:06:19,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:19,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:06:19,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:06:19,221 INFO L87 Difference]: Start difference. First operand 596 states and 973 transitions. Second operand has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9)