./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl --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 339ae17141354782861ad14ce1f1515b53735bca35311ebbaf6a68a6022f4172 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:20:15,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:20:15,333 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:20:15,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:20:15,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:20:15,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:20:15,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:20:15,387 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:20:15,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:20:15,396 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:20:15,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:20:15,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:20:15,401 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:20:15,403 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:20:15,403 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:20:15,403 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:20:15,404 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:20:15,404 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:20:15,405 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:20:15,405 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:20:15,406 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:20:15,406 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:20:15,407 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:20:15,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:20:15,407 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:20:15,408 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:20:15,409 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:20:15,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:20:15,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:20:15,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:20:15,411 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:20:15,412 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:20:15,412 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:20:15,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:20:15,412 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:20:15,413 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:20:15,413 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:20:15,413 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:20:15,414 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:20:15,414 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_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 339ae17141354782861ad14ce1f1515b53735bca35311ebbaf6a68a6022f4172 [2023-11-12 02:20:15,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:20:15,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:20:15,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:20:15,715 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:20:15,715 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:20:15,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c [2023-11-12 02:20:18,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:20:19,332 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:20:19,332 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6f75ba-fc76-4f17-a960-671b1645f33e/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c [2023-11-12 02:20:19,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl/data/f352a955c/78c0948d84f54568a45cb8de4153827d/FLAG38f3e7e0e [2023-11-12 02:20:19,384 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl/data/f352a955c/78c0948d84f54568a45cb8de4153827d [2023-11-12 02:20:19,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:20:19,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:20:19,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:20:19,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:20:19,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:20:19,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60948c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:19, skipping insertion in model container [2023-11-12 02:20:19,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:20:19" (1/1) ... [2023-11-12 02:20:19,500 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:20:20,169 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_6b6f75ba-fc76-4f17-a960-671b1645f33e/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c[73050,73063] [2023-11-12 02:20:20,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:20:20,196 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:20:20,207 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2023-11-12 02:20:20,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [716] [2023-11-12 02:20:20,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [837] [2023-11-12 02:20:20,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [875] [2023-11-12 02:20:20,210 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2483] [2023-11-12 02:20:20,211 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [2849] [2023-11-12 02:20:20,211 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3009] [2023-11-12 02:20:20,211 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3361] [2023-11-12 02:20:20,212 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3373] [2023-11-12 02:20:20,212 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3464] [2023-11-12 02:20:20,302 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_6b6f75ba-fc76-4f17-a960-671b1645f33e/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c[73050,73063] [2023-11-12 02:20:20,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:20:20,336 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:20:20,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:20 WrapperNode [2023-11-12 02:20:20,337 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:20:20,338 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:20:20,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:20:20,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:20:20,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:20" (1/1) ... [2023-11-12 02:20:20,375 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:20" (1/1) ... [2023-11-12 02:20:20,450 INFO L138 Inliner]: procedures = 97, calls = 345, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 1130 [2023-11-12 02:20:20,450 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:20:20,451 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:20:20,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:20:20,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:20:20,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:20" (1/1) ... [2023-11-12 02:20:20,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:20" (1/1) ... [2023-11-12 02:20:20,469 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:20" (1/1) ... [2023-11-12 02:20:20,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:20" (1/1) ... [2023-11-12 02:20:20,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:20" (1/1) ... [2023-11-12 02:20:20,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:20" (1/1) ... [2023-11-12 02:20:20,518 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:20" (1/1) ... [2023-11-12 02:20:20,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:20" (1/1) ... [2023-11-12 02:20:20,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:20:20,537 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:20:20,537 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:20:20,537 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:20:20,538 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:20" (1/1) ... [2023-11-12 02:20:20,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:20:20,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:20,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:20,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b6f75ba-fc76-4f17-a960-671b1645f33e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:20:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-12 02:20:20,654 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-12 02:20:20,655 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-12 02:20:20,655 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-12 02:20:20,655 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-12 02:20:20,656 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-12 02:20:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-12 02:20:20,656 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-12 02:20:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-12 02:20:20,656 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-12 02:20:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-12 02:20:20,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-12 02:20:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-12 02:20:20,657 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-12 02:20:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-12 02:20:20,658 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-12 02:20:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-12 02:20:20,658 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-12 02:20:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:20:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-12 02:20:20,660 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-12 02:20:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-12 02:20:20,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-12 02:20:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-12 02:20:20,661 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-12 02:20:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-12 02:20:20,661 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-12 02:20:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-12 02:20:20,662 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-12 02:20:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-12 02:20:20,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-12 02:20:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-12 02:20:20,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-12 02:20:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-12 02:20:20,662 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-12 02:20:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-11-12 02:20:20,663 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-11-12 02:20:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-12 02:20:20,663 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-12 02:20:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-12 02:20:20,663 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-12 02:20:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-12 02:20:20,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-12 02:20:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-12 02:20:20,664 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-12 02:20:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-11-12 02:20:20,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-11-12 02:20:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:20:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-12 02:20:20,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-12 02:20:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:20:20,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:20:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-12 02:20:20,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-12 02:20:20,666 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-11-12 02:20:20,666 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-11-12 02:20:20,840 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:20:20,843 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:20:22,155 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:20:22,175 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:20:22,176 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:20:22,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:22 BoogieIcfgContainer [2023-11-12 02:20:22,180 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:20:22,184 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:20:22,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:20:22,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:20:22,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:20:19" (1/3) ... [2023-11-12 02:20:22,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6d5a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:20:22, skipping insertion in model container [2023-11-12 02:20:22,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:20" (2/3) ... [2023-11-12 02:20:22,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6d5a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:20:22, skipping insertion in model container [2023-11-12 02:20:22,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:22" (3/3) ... [2023-11-12 02:20:22,192 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product28.cil.c [2023-11-12 02:20:22,213 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:20:22,214 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:20:22,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:20:22,298 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;@696a5644, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:20:22,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:20:22,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 573 states, 448 states have (on average 1.6875) internal successors, (756), 471 states have internal predecessors, (756), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (97), 90 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-12 02:20:22,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-12 02:20:22,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:22,323 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] [2023-11-12 02:20:22,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:22,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2105504779, now seen corresponding path program 1 times [2023-11-12 02:20:22,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:22,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049433815] [2023-11-12 02:20:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:22,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:23,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:20:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:23,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:23,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-12 02:20:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:23,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:20:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:23,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:23,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:23,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:20:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:23,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:20:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:23,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:23,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049433815] [2023-11-12 02:20:23,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049433815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:23,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:23,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:20:23,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514788914] [2023-11-12 02:20:23,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:23,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:20:23,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:23,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:20:23,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:20:23,947 INFO L87 Difference]: Start difference. First operand has 573 states, 448 states have (on average 1.6875) internal successors, (756), 471 states have internal predecessors, (756), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (97), 90 states have call predecessors, (97), 97 states have call successors, (97) 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) [2023-11-12 02:20:31,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:20:31,302 INFO L93 Difference]: Finished difference Result 1280 states and 2154 transitions. [2023-11-12 02:20:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:20:31,314 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 [2023-11-12 02:20:31,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:20:31,349 INFO L225 Difference]: With dead ends: 1280 [2023-11-12 02:20:31,350 INFO L226 Difference]: Without dead ends: 719 [2023-11-12 02:20:31,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:20:31,368 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1170 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 2617 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:20:31,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 1126 Invalid, 2877 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [260 Valid, 2617 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-12 02:20:31,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-11-12 02:20:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 565. [2023-11-12 02:20:31,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6832579185520362) internal successors, (744), 463 states have internal predecessors, (744), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-12 02:20:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 933 transitions. [2023-11-12 02:20:31,647 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 933 transitions. Word has length 62 [2023-11-12 02:20:31,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:20:31,648 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 933 transitions. [2023-11-12 02:20:31,648 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) [2023-11-12 02:20:31,649 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 933 transitions. [2023-11-12 02:20:31,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 02:20:31,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:31,654 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] [2023-11-12 02:20:31,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:20:31,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:31,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:31,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1663681637, now seen corresponding path program 1 times [2023-11-12 02:20:31,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:31,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481188422] [2023-11-12 02:20:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:31,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:20:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:31,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:20:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:32,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-12 02:20:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:32,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:32,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:20:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:32,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:20:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:32,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:32,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481188422] [2023-11-12 02:20:32,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481188422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:32,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:32,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:20:32,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163604191] [2023-11-12 02:20:32,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:32,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:20:32,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:32,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:20:32,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:20:32,460 INFO L87 Difference]: Start difference. First operand 565 states and 933 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) [2023-11-12 02:20:39,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:20:39,287 INFO L93 Difference]: Finished difference Result 1266 states and 2120 transitions. [2023-11-12 02:20:39,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:20:39,288 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 [2023-11-12 02:20:39,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:20:39,297 INFO L225 Difference]: With dead ends: 1266 [2023-11-12 02:20:39,297 INFO L226 Difference]: Without dead ends: 719 [2023-11-12 02:20:39,301 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 [2023-11-12 02:20:39,302 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 1165 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 2614 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:20:39,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 1098 Invalid, 2875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [261 Valid, 2614 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-12 02:20:39,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-11-12 02:20:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 565. [2023-11-12 02:20:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6809954751131222) internal successors, (743), 463 states have internal predecessors, (743), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-12 02:20:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 932 transitions. [2023-11-12 02:20:39,444 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 932 transitions. Word has length 65 [2023-11-12 02:20:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:20:39,445 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 932 transitions. [2023-11-12 02:20:39,445 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) [2023-11-12 02:20:39,445 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 932 transitions. [2023-11-12 02:20:39,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-12 02:20:39,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:39,449 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] [2023-11-12 02:20:39,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:20:39,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:39,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:39,450 INFO L85 PathProgramCache]: Analyzing trace with hash 645158875, now seen corresponding path program 1 times [2023-11-12 02:20:39,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:39,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374826899] [2023-11-12 02:20:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:39,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:20:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:39,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:39,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:20:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:40,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:20:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:40,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:40,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:20:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:40,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:20:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:40,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:40,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374826899] [2023-11-12 02:20:40,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374826899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:40,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:40,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:20:40,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383596241] [2023-11-12 02:20:40,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:40,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:20:40,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:40,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:20:40,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:20:40,269 INFO L87 Difference]: Start difference. First operand 565 states and 932 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) [2023-11-12 02:20:46,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:20:46,825 INFO L93 Difference]: Finished difference Result 1266 states and 2119 transitions. [2023-11-12 02:20:46,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:20:46,829 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 [2023-11-12 02:20:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:20:46,837 INFO L225 Difference]: With dead ends: 1266 [2023-11-12 02:20:46,837 INFO L226 Difference]: Without dead ends: 719 [2023-11-12 02:20:46,840 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 [2023-11-12 02:20:46,842 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1163 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:20:46,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 1092 Invalid, 2870 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [264 Valid, 2606 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-12 02:20:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-11-12 02:20:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 565. [2023-11-12 02:20:46,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6787330316742082) internal successors, (742), 463 states have internal predecessors, (742), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-12 02:20:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 931 transitions. [2023-11-12 02:20:47,005 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 931 transitions. Word has length 66 [2023-11-12 02:20:47,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:20:47,005 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 931 transitions. [2023-11-12 02:20:47,006 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) [2023-11-12 02:20:47,006 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 931 transitions. [2023-11-12 02:20:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 02:20:47,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:47,009 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] [2023-11-12 02:20:47,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:20:47,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:47,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2082562911, now seen corresponding path program 1 times [2023-11-12 02:20:47,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:47,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241869299] [2023-11-12 02:20:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:47,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:47,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:20:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:47,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:20:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:47,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:20:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:47,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:47,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:47,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:20:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:47,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:20:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:47,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:47,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241869299] [2023-11-12 02:20:47,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241869299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:47,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:47,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:20:47,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58303138] [2023-11-12 02:20:47,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:47,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:20:47,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:47,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:20:47,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:20:47,804 INFO L87 Difference]: Start difference. First operand 565 states and 931 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) [2023-11-12 02:20:54,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:20:54,020 INFO L93 Difference]: Finished difference Result 1266 states and 2118 transitions. [2023-11-12 02:20:54,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:20:54,021 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 [2023-11-12 02:20:54,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:20:54,029 INFO L225 Difference]: With dead ends: 1266 [2023-11-12 02:20:54,029 INFO L226 Difference]: Without dead ends: 719 [2023-11-12 02:20:54,033 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 [2023-11-12 02:20:54,034 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1155 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 2614 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:20:54,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 1107 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2614 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-12 02:20:54,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-11-12 02:20:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 565. [2023-11-12 02:20:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6764705882352942) internal successors, (741), 463 states have internal predecessors, (741), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-12 02:20:54,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 930 transitions. [2023-11-12 02:20:54,190 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 930 transitions. Word has length 67 [2023-11-12 02:20:54,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:20:54,190 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 930 transitions. [2023-11-12 02:20:54,190 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) [2023-11-12 02:20:54,191 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 930 transitions. [2023-11-12 02:20:54,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-12 02:20:54,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:54,193 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] [2023-11-12 02:20:54,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:20:54,193 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:54,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:54,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1960879593, now seen corresponding path program 1 times [2023-11-12 02:20:54,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:54,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685606] [2023-11-12 02:20:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:54,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:54,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:20:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:54,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:54,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:20:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:54,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-12 02:20:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:54,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:55,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:20:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:55,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:20:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:55,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:20:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:55,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:55,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685606] [2023-11-12 02:20:55,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:55,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:55,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:20:55,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964773511] [2023-11-12 02:20:55,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:55,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:20:55,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:55,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:20:55,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:20:55,040 INFO L87 Difference]: Start difference. First operand 565 states and 930 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) [2023-11-12 02:21:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:21:03,410 INFO L93 Difference]: Finished difference Result 1274 states and 2133 transitions. [2023-11-12 02:21:03,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:21:03,410 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 [2023-11-12 02:21:03,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:21:03,417 INFO L225 Difference]: With dead ends: 1274 [2023-11-12 02:21:03,417 INFO L226 Difference]: Without dead ends: 727 [2023-11-12 02:21:03,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:21:03,422 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 743 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 5053 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 5183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 5053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:21:03,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1943 Invalid, 5183 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [130 Valid, 5053 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-11-12 02:21:03,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2023-11-12 02:21:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 569. [2023-11-12 02:21:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6696629213483145) internal successors, (743), 466 states have internal predecessors, (743), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2023-11-12 02:21:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 934 transitions. [2023-11-12 02:21:03,550 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 934 transitions. Word has length 68 [2023-11-12 02:21:03,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:21:03,550 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 934 transitions. [2023-11-12 02:21:03,551 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) [2023-11-12 02:21:03,551 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 934 transitions. [2023-11-12 02:21:03,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-12 02:21:03,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:21:03,553 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] [2023-11-12 02:21:03,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:21:03,554 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:21:03,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:03,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1053687398, now seen corresponding path program 1 times [2023-11-12 02:21:03,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:03,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657030] [2023-11-12 02:21:03,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:03,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:03,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:21:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:03,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:21:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:03,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:21:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:04,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:21:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:04,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:21:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:21:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:04,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:21:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:04,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:21:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:04,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:21:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:21:04,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:04,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657030] [2023-11-12 02:21:04,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:04,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:04,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 02:21:04,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317450891] [2023-11-12 02:21:04,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:04,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:21:04,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:04,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:21:04,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:21:04,451 INFO L87 Difference]: Start difference. First operand 569 states and 934 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)