./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/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_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/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_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/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 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:24:00,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:24:00,355 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:24:00,361 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:24:00,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:24:00,388 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:24:00,389 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:24:00,389 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:24:00,390 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:24:00,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:24:00,392 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:24:00,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:24:00,393 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:24:00,394 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:24:00,394 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:24:00,395 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:24:00,395 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:24:00,396 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:24:00,396 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:24:00,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:24:00,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:24:00,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:24:00,399 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:24:00,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:24:00,400 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:24:00,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:24:00,401 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:24:00,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:24:00,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:00,402 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:24:00,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:24:00,403 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:24:00,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:24:00,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:24:00,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:24:00,405 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:24:00,405 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:24:00,406 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:24:00,406 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:24:00,407 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_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e [2023-11-12 02:24:00,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:24:00,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:24:00,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:24:00,696 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:24:00,696 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:24:00,697 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2023-11-12 02:24:03,913 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:24:04,287 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:24:04,288 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2023-11-12 02:24:04,320 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/bin/uautomizer-verify-uTZkv6EMXl/data/5f1d23e76/0ac040e6e13e4af59493c4021a16d74c/FLAGd9ed0fffc [2023-11-12 02:24:04,344 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/bin/uautomizer-verify-uTZkv6EMXl/data/5f1d23e76/0ac040e6e13e4af59493c4021a16d74c [2023-11-12 02:24:04,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:24:04,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:24:04,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:04,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:24:04,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:24:04,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:04" (1/1) ... [2023-11-12 02:24:04,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686e9d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:04, skipping insertion in model container [2023-11-12 02:24:04,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:04" (1/1) ... [2023-11-12 02:24:04,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:04,833 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_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2023-11-12 02:24:05,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:05,200 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:24:05,229 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2023-11-12 02:24:05,230 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [414] [2023-11-12 02:24:05,231 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [452] [2023-11-12 02:24:05,231 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [461] [2023-11-12 02:24:05,231 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [626] [2023-11-12 02:24:05,232 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [640] [2023-11-12 02:24:05,232 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [739] [2023-11-12 02:24:05,232 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [859] [2023-11-12 02:24:05,233 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2444] [2023-11-12 02:24:05,233 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3105] [2023-11-12 02:24:05,256 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_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2023-11-12 02:24:05,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:05,380 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:24:05,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:05 WrapperNode [2023-11-12 02:24:05,381 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:05,382 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:05,382 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:24:05,383 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:24:05,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:05" (1/1) ... [2023-11-12 02:24:05,436 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:05" (1/1) ... [2023-11-12 02:24:05,507 INFO L138 Inliner]: procedures = 95, calls = 344, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 872 [2023-11-12 02:24:05,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:05,516 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:24:05,523 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:24:05,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:24:05,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:05" (1/1) ... [2023-11-12 02:24:05,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:05" (1/1) ... [2023-11-12 02:24:05,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:05" (1/1) ... [2023-11-12 02:24:05,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:05" (1/1) ... [2023-11-12 02:24:05,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:05" (1/1) ... [2023-11-12 02:24:05,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:05" (1/1) ... [2023-11-12 02:24:05,624 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:05" (1/1) ... [2023-11-12 02:24:05,630 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:05" (1/1) ... [2023-11-12 02:24:05,648 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:24:05,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:24:05,654 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:24:05,654 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:24:05,655 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:05" (1/1) ... [2023-11-12 02:24:05,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:05,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:05,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:24:05,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45488b6-9ed5-40b4-aab1-d1299c48a3bb/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:24:05,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:24:05,735 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-12 02:24:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-12 02:24:05,736 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-12 02:24:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-12 02:24:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-12 02:24:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-12 02:24:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-12 02:24:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-12 02:24:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-12 02:24:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-12 02:24:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-11-12 02:24:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-11-12 02:24:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-12 02:24:05,739 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-12 02:24:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-12 02:24:05,739 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-12 02:24:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-12 02:24:05,740 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-12 02:24:05,740 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-12 02:24:05,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-12 02:24:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-12 02:24:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-12 02:24:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-12 02:24:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-12 02:24:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-12 02:24:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-12 02:24:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-12 02:24:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-12 02:24:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-12 02:24:05,744 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-12 02:24:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-12 02:24:05,745 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-12 02:24:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-12 02:24:05,745 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-12 02:24:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-12 02:24:05,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-12 02:24:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-12 02:24:05,746 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-12 02:24:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-11-12 02:24:05,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-11-12 02:24:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:24:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-12 02:24:05,746 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-12 02:24:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-12 02:24:05,747 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-12 02:24:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-12 02:24:05,747 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-12 02:24:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-12 02:24:05,747 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-12 02:24:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-11-12 02:24:05,748 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-11-12 02:24:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:24:05,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:24:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-12 02:24:05,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-12 02:24:05,928 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:24:05,933 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:24:07,296 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:24:07,313 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:24:07,313 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:24:07,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:07 BoogieIcfgContainer [2023-11-12 02:24:07,316 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:24:07,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:24:07,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:24:07,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:24:07,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:24:04" (1/3) ... [2023-11-12 02:24:07,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1e4381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:07, skipping insertion in model container [2023-11-12 02:24:07,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:05" (2/3) ... [2023-11-12 02:24:07,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1e4381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:07, skipping insertion in model container [2023-11-12 02:24:07,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:07" (3/3) ... [2023-11-12 02:24:07,327 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product30.cil.c [2023-11-12 02:24:07,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:24:07,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:24:07,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:24:07,428 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;@22af3fe7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:24:07,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:24:07,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 576 states, 452 states have (on average 1.6924778761061947) internal successors, (765), 475 states have internal predecessors, (765), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-12 02:24:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-12 02:24:07,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:24:07,460 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 02:24:07,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:24:07,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:07,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1316381237, now seen corresponding path program 1 times [2023-11-12 02:24:07,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:07,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602388158] [2023-11-12 02:24:07,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:07,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:08,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:24:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:08,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:08,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-12 02:24:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:08,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:24:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:08,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:08,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:08,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:24:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:24:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:08,911 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 02:24:08,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:08,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602388158] [2023-11-12 02:24:08,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602388158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:08,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:08,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:24:08,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852951673] [2023-11-12 02:24:08,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:08,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:24:08,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:08,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:24:08,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:24:08,972 INFO L87 Difference]: Start difference. First operand has 576 states, 452 states have (on average 1.6924778761061947) internal successors, (765), 475 states have internal predecessors, (765), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) 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 02:24:16,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:24:16,230 INFO L93 Difference]: Finished difference Result 1286 states and 2168 transitions. [2023-11-12 02:24:16,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:24:16,237 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 02:24:16,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:24:16,262 INFO L225 Difference]: With dead ends: 1286 [2023-11-12 02:24:16,262 INFO L226 Difference]: Without dead ends: 722 [2023-11-12 02:24:16,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:24:16,281 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1184 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 2641 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:24:16,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 1141 Invalid, 2894 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [253 Valid, 2641 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-12 02:24:16,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-11-12 02:24:16,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 568. [2023-11-12 02:24:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 446 states have (on average 1.688340807174888) internal successors, (753), 467 states have internal predecessors, (753), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-12 02:24:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 940 transitions. [2023-11-12 02:24:16,514 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 940 transitions. Word has length 62 [2023-11-12 02:24:16,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:24:16,515 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 940 transitions. [2023-11-12 02:24:16,515 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 02:24:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 940 transitions. [2023-11-12 02:24:16,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 02:24:16,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:24:16,521 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 02:24:16,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:24:16,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:24:16,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:16,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2014226098, now seen corresponding path program 1 times [2023-11-12 02:24:16,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:16,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047766497] [2023-11-12 02:24:16,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:16,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:16,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:24:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:16,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:16,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:24:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:17,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-12 02:24:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:17,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:17,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:17,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:24:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:17,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:24:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:17,305 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 02:24:17,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:17,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047766497] [2023-11-12 02:24:17,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047766497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:17,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:17,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:24:17,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457228307] [2023-11-12 02:24:17,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:17,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:24:17,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:17,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:24:17,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:24:17,310 INFO L87 Difference]: Start difference. First operand 568 states and 940 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 02:24:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:24:24,172 INFO L93 Difference]: Finished difference Result 1272 states and 2134 transitions. [2023-11-12 02:24:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:24:24,173 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 02:24:24,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:24:24,182 INFO L225 Difference]: With dead ends: 1272 [2023-11-12 02:24:24,182 INFO L226 Difference]: Without dead ends: 722 [2023-11-12 02:24:24,186 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 02:24:24,187 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1184 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 2633 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:24:24,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 1092 Invalid, 2894 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [261 Valid, 2633 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-12 02:24:24,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-11-12 02:24:24,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 568. [2023-11-12 02:24:24,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 446 states have (on average 1.6860986547085202) internal successors, (752), 467 states have internal predecessors, (752), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-12 02:24:24,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 939 transitions. [2023-11-12 02:24:24,321 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 939 transitions. Word has length 65 [2023-11-12 02:24:24,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:24:24,321 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 939 transitions. [2023-11-12 02:24:24,321 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 02:24:24,321 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 939 transitions. [2023-11-12 02:24:24,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-12 02:24:24,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:24:24,327 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 02:24:24,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:24:24,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:24:24,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1200980869, now seen corresponding path program 1 times [2023-11-12 02:24:24,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:24,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169956747] [2023-11-12 02:24:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:24,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:24:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:24,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:24,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:24:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:25,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:24:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:25,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:25,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:24:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:25,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:24:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:25,214 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 02:24:25,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:25,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169956747] [2023-11-12 02:24:25,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169956747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:25,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:25,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:24:25,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285178932] [2023-11-12 02:24:25,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:25,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:24:25,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:25,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:24:25,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:24:25,217 INFO L87 Difference]: Start difference. First operand 568 states and 939 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 02:24:32,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:24:32,126 INFO L93 Difference]: Finished difference Result 1272 states and 2133 transitions. [2023-11-12 02:24:32,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:24:32,127 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 02:24:32,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:24:32,136 INFO L225 Difference]: With dead ends: 1272 [2023-11-12 02:24:32,137 INFO L226 Difference]: Without dead ends: 722 [2023-11-12 02:24:32,141 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 02:24:32,142 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 706 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 2791 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:24:32,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1127 Invalid, 2909 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 2791 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-12 02:24:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-11-12 02:24:32,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 568. [2023-11-12 02:24:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 446 states have (on average 1.6838565022421526) internal successors, (751), 467 states have internal predecessors, (751), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-12 02:24:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 938 transitions. [2023-11-12 02:24:32,278 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 938 transitions. Word has length 66 [2023-11-12 02:24:32,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:24:32,279 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 938 transitions. [2023-11-12 02:24:32,279 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 02:24:32,279 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 938 transitions. [2023-11-12 02:24:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 02:24:32,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:24:32,283 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 02:24:32,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:24:32,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:24:32,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:32,285 INFO L85 PathProgramCache]: Analyzing trace with hash 541895310, now seen corresponding path program 1 times [2023-11-12 02:24:32,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:32,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642261358] [2023-11-12 02:24:32,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:32,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:32,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:24:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:32,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:24:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:33,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:24:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:33,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:33,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:33,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:24:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:33,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:24:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:33,126 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 02:24:33,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:33,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642261358] [2023-11-12 02:24:33,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642261358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:33,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:33,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:24:33,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311677920] [2023-11-12 02:24:33,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:33,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:24:33,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:33,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:24:33,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:24:33,130 INFO L87 Difference]: Start difference. First operand 568 states and 938 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 02:24:39,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:24:39,618 INFO L93 Difference]: Finished difference Result 1272 states and 2132 transitions. [2023-11-12 02:24:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:24:39,619 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 02:24:39,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:24:39,629 INFO L225 Difference]: With dead ends: 1272 [2023-11-12 02:24:39,630 INFO L226 Difference]: Without dead ends: 722 [2023-11-12 02:24:39,633 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 02:24:39,646 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 1171 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:24:39,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 1113 Invalid, 2894 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 2642 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-12 02:24:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-11-12 02:24:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 568. [2023-11-12 02:24:39,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 446 states have (on average 1.6816143497757847) internal successors, (750), 467 states have internal predecessors, (750), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-12 02:24:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 937 transitions. [2023-11-12 02:24:39,782 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 937 transitions. Word has length 67 [2023-11-12 02:24:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:24:39,782 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 937 transitions. [2023-11-12 02:24:39,783 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 02:24:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 937 transitions. [2023-11-12 02:24:39,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-12 02:24:39,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:24:39,785 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 02:24:39,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:24:39,785 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:24:39,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:39,786 INFO L85 PathProgramCache]: Analyzing trace with hash 366792225, now seen corresponding path program 1 times [2023-11-12 02:24:39,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:39,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793471170] [2023-11-12 02:24:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:39,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:40,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:24:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:40,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:40,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:24:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:40,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-12 02:24:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:40,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:40,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:40,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:24:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:40,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:24:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:40,666 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 02:24:40,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:40,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793471170] [2023-11-12 02:24:40,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793471170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:40,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:40,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:24:40,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429897927] [2023-11-12 02:24:40,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:40,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:24:40,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:40,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:24:40,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:24:40,670 INFO L87 Difference]: Start difference. First operand 568 states and 937 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 02:24:48,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:24:48,965 INFO L93 Difference]: Finished difference Result 1280 states and 2147 transitions. [2023-11-12 02:24:48,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:24:48,966 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 02:24:48,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:24:48,973 INFO L225 Difference]: With dead ends: 1280 [2023-11-12 02:24:48,973 INFO L226 Difference]: Without dead ends: 730 [2023-11-12 02:24:48,977 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 02:24:48,978 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 752 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 5114 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 5238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 5114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:24:48,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1997 Invalid, 5238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 5114 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-11-12 02:24:48,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-11-12 02:24:49,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 572. [2023-11-12 02:24:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 449 states have (on average 1.6748329621380846) internal successors, (752), 470 states have internal predecessors, (752), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2023-11-12 02:24:49,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 941 transitions. [2023-11-12 02:24:49,103 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 941 transitions. Word has length 68 [2023-11-12 02:24:49,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:24:49,103 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 941 transitions. [2023-11-12 02:24:49,104 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 02:24:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 941 transitions. [2023-11-12 02:24:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-12 02:24:49,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:24:49,107 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 02:24:49,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:24:49,108 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:24:49,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:49,108 INFO L85 PathProgramCache]: Analyzing trace with hash -2050407705, now seen corresponding path program 1 times [2023-11-12 02:24:49,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:49,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688490964] [2023-11-12 02:24:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:49,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:49,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:24:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:49,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:49,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:24:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:49,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:24:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:50,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:50,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:24:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:50,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:24:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:50,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:24:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:24:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:50,234 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 02:24:50,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:50,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688490964] [2023-11-12 02:24:50,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688490964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:50,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:50,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-12 02:24:50,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869884670] [2023-11-12 02:24:50,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:50,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 02:24:50,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:50,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 02:24:50,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:24:50,244 INFO L87 Difference]: Start difference. First operand 572 states and 941 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 10 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9)