./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:05:53,035 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:05:53,127 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:05:53,139 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:05:53,140 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:05:53,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:05:53,170 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:05:53,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:05:53,171 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:05:53,172 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:05:53,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:05:53,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:05:53,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:05:53,175 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:05:53,176 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:05:53,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:05:53,177 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:05:53,178 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:05:53,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:05:53,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:05:53,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:05:53,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:05:53,181 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:05:53,181 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:05:53,182 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:05:53,182 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:05:53,182 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:05:53,183 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:05:53,184 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:05:53,184 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:05:53,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:05:53,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:53,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:05:53,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:05:53,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:05:53,186 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:05:53,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:05:53,187 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:05:53,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:05:53,187 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:05:53,187 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:05:53,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:05:53,188 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_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d [2023-11-26 12:05:53,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:05:53,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:05:53,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:05:53,584 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:05:53,585 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:05:53,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2023-11-26 12:05:56,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:05:57,131 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:05:57,132 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efe2608-2425-474c-8b32-7b0b499e78a3/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2023-11-26 12:05:57,159 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme/data/06993a83c/9a9af5e665eb43efb1cafb9b5b70a5d7/FLAG9fa489f4f [2023-11-26 12:05:57,178 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme/data/06993a83c/9a9af5e665eb43efb1cafb9b5b70a5d7 [2023-11-26 12:05:57,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:05:57,187 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:05:57,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:57,190 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:05:57,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:05:57,195 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:57" (1/1) ... [2023-11-26 12:05:57,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb04d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:57, skipping insertion in model container [2023-11-26 12:05:57,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:57" (1/1) ... [2023-11-26 12:05:57,287 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:05:57,631 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_7efe2608-2425-474c-8b32-7b0b499e78a3/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2023-11-26 12:05:57,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:57,928 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:05:57,939 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2023-11-26 12:05:57,940 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [169] [2023-11-26 12:05:57,941 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [532] [2023-11-26 12:05:57,941 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [627] [2023-11-26 12:05:57,941 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [636] [2023-11-26 12:05:57,941 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1303] [2023-11-26 12:05:57,942 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1338] [2023-11-26 12:05:57,942 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [1350] [2023-11-26 12:05:57,942 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1533] [2023-11-26 12:05:57,942 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3112] [2023-11-26 12:05:57,960 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_7efe2608-2425-474c-8b32-7b0b499e78a3/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2023-11-26 12:05:58,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:58,071 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:05:58,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:58 WrapperNode [2023-11-26 12:05:58,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:58,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:58,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:05:58,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:05:58,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:58" (1/1) ... [2023-11-26 12:05:58,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:58" (1/1) ... [2023-11-26 12:05:58,247 INFO L138 Inliner]: procedures = 95, calls = 347, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 919 [2023-11-26 12:05:58,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:58,248 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:05:58,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:05:58,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:05:58,261 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:58" (1/1) ... [2023-11-26 12:05:58,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:58" (1/1) ... [2023-11-26 12:05:58,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:58" (1/1) ... [2023-11-26 12:05:58,300 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-11-26 12:05:58,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:58" (1/1) ... [2023-11-26 12:05:58,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:58" (1/1) ... [2023-11-26 12:05:58,328 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:58" (1/1) ... [2023-11-26 12:05:58,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:58" (1/1) ... [2023-11-26 12:05:58,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:58" (1/1) ... [2023-11-26 12:05:58,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:58" (1/1) ... [2023-11-26 12:05:58,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:05:58,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:05:58,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:05:58,371 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:05:58,372 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:58" (1/1) ... [2023-11-26 12:05:58,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:58,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:58,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:58,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efe2608-2425-474c-8b32-7b0b499e78a3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:05:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:05:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-26 12:05:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-26 12:05:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-26 12:05:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-26 12:05:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-26 12:05:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-26 12:05:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-26 12:05:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-26 12:05:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-26 12:05:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-26 12:05:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-11-26 12:05:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-11-26 12:05:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-26 12:05:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-26 12:05:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-26 12:05:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-26 12:05:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-26 12:05:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-26 12:05:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-26 12:05:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-26 12:05:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-26 12:05:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-26 12:05:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-26 12:05:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-26 12:05:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-26 12:05:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-26 12:05:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-26 12:05:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-26 12:05:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-26 12:05:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-26 12:05:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-26 12:05:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-26 12:05:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-26 12:05:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-26 12:05:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-26 12:05:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-26 12:05:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-26 12:05:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-26 12:05:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:05:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:05:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:05:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:05:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:05:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 12:05:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 12:05:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 12:05:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 12:05:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-26 12:05:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-26 12:05:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-26 12:05:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-26 12:05:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-26 12:05:58,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-26 12:05:58,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-26 12:05:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-26 12:05:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-26 12:05:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-26 12:05:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-26 12:05:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-26 12:05:58,528 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-26 12:05:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-26 12:05:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-26 12:05:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-26 12:05:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-26 12:05:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-26 12:05:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-26 12:05:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-11-26 12:05:58,531 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-11-26 12:05:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:05:58,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:05:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-26 12:05:58,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-26 12:05:58,802 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:05:58,804 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:06:00,146 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:06:00,280 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:06:00,281 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:06:00,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:00 BoogieIcfgContainer [2023-11-26 12:06:00,282 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:06:00,285 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:06:00,285 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:06:00,288 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:06:00,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:05:57" (1/3) ... [2023-11-26 12:06:00,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31776442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:00, skipping insertion in model container [2023-11-26 12:06:00,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:58" (2/3) ... [2023-11-26 12:06:00,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31776442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:00, skipping insertion in model container [2023-11-26 12:06:00,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:00" (3/3) ... [2023-11-26 12:06:00,294 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product30.cil.c [2023-11-26 12:06:00,313 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:06:00,314 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:06:00,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:06:00,393 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;@221311d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:06:00,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:06:00,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 560 states, 435 states have (on average 1.7264367816091954) internal successors, (751), 458 states have internal predecessors, (751), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-26 12:06:00,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 12:06:00,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:00,419 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] [2023-11-26 12:06:00,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:00,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:00,426 INFO L85 PathProgramCache]: Analyzing trace with hash 506745133, now seen corresponding path program 1 times [2023-11-26 12:06:00,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:00,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989166665] [2023-11-26 12:06:00,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:00,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:01,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:06:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:01,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:01,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 12:06:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:01,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 12:06:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:02,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:02,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:02,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 12:06:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:02,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:02,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989166665] [2023-11-26 12:06:02,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989166665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:02,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:02,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:06:02,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72752413] [2023-11-26 12:06:02,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:02,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:02,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:02,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:02,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:02,095 INFO L87 Difference]: Start difference. First operand has 560 states, 435 states have (on average 1.7264367816091954) internal successors, (751), 458 states have internal predecessors, (751), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:06:09,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:09,954 INFO L93 Difference]: Finished difference Result 1265 states and 2165 transitions. [2023-11-26 12:06:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:06:09,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2023-11-26 12:06:09,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:10,011 INFO L225 Difference]: With dead ends: 1265 [2023-11-26 12:06:10,011 INFO L226 Difference]: Without dead ends: 714 [2023-11-26 12:06:10,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:06:10,027 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 708 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 2832 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:10,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 1095 Invalid, 2955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2832 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-26 12:06:10,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2023-11-26 12:06:10,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 556. [2023-11-26 12:06:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 433 states have (on average 1.7159353348729791) internal successors, (743), 454 states have internal predecessors, (743), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2023-11-26 12:06:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 934 transitions. [2023-11-26 12:06:10,297 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 934 transitions. Word has length 50 [2023-11-26 12:06:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:10,297 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 934 transitions. [2023-11-26 12:06:10,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:06:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 934 transitions. [2023-11-26 12:06:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 12:06:10,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:10,303 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] [2023-11-26 12:06:10,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:06:10,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:10,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash 570905032, now seen corresponding path program 1 times [2023-11-26 12:06:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:10,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191169284] [2023-11-26 12:06:10,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:10,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:10,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:06:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:10,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:10,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 12:06:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:11,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 12:06:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:11,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:11,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:11,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 12:06:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:11,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:11,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191169284] [2023-11-26 12:06:11,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191169284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:11,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:11,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:06:11,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008147437] [2023-11-26 12:06:11,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:11,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:11,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:11,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:11,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:11,243 INFO L87 Difference]: Start difference. First operand 556 states and 934 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:06:18,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:18,214 INFO L93 Difference]: Finished difference Result 1258 states and 2138 transitions. [2023-11-26 12:06:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:06:18,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 52 [2023-11-26 12:06:18,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:18,224 INFO L225 Difference]: With dead ends: 1258 [2023-11-26 12:06:18,224 INFO L226 Difference]: Without dead ends: 714 [2023-11-26 12:06:18,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:06:18,230 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1156 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 2665 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 2929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:18,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1084 Invalid, 2929 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [264 Valid, 2665 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-26 12:06:18,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2023-11-26 12:06:18,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 556. [2023-11-26 12:06:18,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 433 states have (on average 1.7136258660508084) internal successors, (742), 454 states have internal predecessors, (742), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2023-11-26 12:06:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 933 transitions. [2023-11-26 12:06:18,373 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 933 transitions. Word has length 52 [2023-11-26 12:06:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:18,374 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 933 transitions. [2023-11-26 12:06:18,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:06:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 933 transitions. [2023-11-26 12:06:18,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 12:06:18,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:18,379 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] [2023-11-26 12:06:18,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:06:18,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:18,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:18,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1255650139, now seen corresponding path program 1 times [2023-11-26 12:06:18,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:18,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640221670] [2023-11-26 12:06:18,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:18,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:06:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:18,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:06:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 12:06:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:19,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:19,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:19,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 12:06:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:19,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640221670] [2023-11-26 12:06:19,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640221670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:19,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:19,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:06:19,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210236921] [2023-11-26 12:06:19,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:19,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:19,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:19,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:19,214 INFO L87 Difference]: Start difference. First operand 556 states and 933 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:06:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:25,835 INFO L93 Difference]: Finished difference Result 1258 states and 2137 transitions. [2023-11-26 12:06:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:06:25,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2023-11-26 12:06:25,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:25,846 INFO L225 Difference]: With dead ends: 1258 [2023-11-26 12:06:25,847 INFO L226 Difference]: Without dead ends: 714 [2023-11-26 12:06:25,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:06:25,851 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 1153 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:25,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 1075 Invalid, 2938 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [264 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-26 12:06:25,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2023-11-26 12:06:25,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 556. [2023-11-26 12:06:25,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 433 states have (on average 1.7113163972286374) internal successors, (741), 454 states have internal predecessors, (741), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2023-11-26 12:06:25,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 932 transitions. [2023-11-26 12:06:25,981 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 932 transitions. Word has length 53 [2023-11-26 12:06:25,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:25,982 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 932 transitions. [2023-11-26 12:06:25,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:06:25,982 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 932 transitions. [2023-11-26 12:06:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-26 12:06:25,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:25,984 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] [2023-11-26 12:06:25,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:06:25,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:25,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:25,985 INFO L85 PathProgramCache]: Analyzing trace with hash -257312916, now seen corresponding path program 1 times [2023-11-26 12:06:25,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:25,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441449784] [2023-11-26 12:06:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:25,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:06:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:26,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:26,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:06:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 12:06:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:26,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:26,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 12:06:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:26,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:26,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441449784] [2023-11-26 12:06:26,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441449784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:26,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:26,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:06:26,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887517696] [2023-11-26 12:06:26,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:26,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:26,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:26,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:26,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:26,773 INFO L87 Difference]: Start difference. First operand 556 states and 932 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:06:33,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:33,210 INFO L93 Difference]: Finished difference Result 1258 states and 2136 transitions. [2023-11-26 12:06:33,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:06:33,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2023-11-26 12:06:33,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:33,218 INFO L225 Difference]: With dead ends: 1258 [2023-11-26 12:06:33,219 INFO L226 Difference]: Without dead ends: 714 [2023-11-26 12:06:33,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:06:33,223 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 1154 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:33,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 1048 Invalid, 2935 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [276 Valid, 2659 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-26 12:06:33,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2023-11-26 12:06:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 556. [2023-11-26 12:06:33,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 433 states have (on average 1.7090069284064666) internal successors, (740), 454 states have internal predecessors, (740), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2023-11-26 12:06:33,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 931 transitions. [2023-11-26 12:06:33,343 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 931 transitions. Word has length 54 [2023-11-26 12:06:33,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:33,343 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 931 transitions. [2023-11-26 12:06:33,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:06:33,344 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 931 transitions. [2023-11-26 12:06:33,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 12:06:33,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:33,345 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] [2023-11-26 12:06:33,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:06:33,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:33,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1881624695, now seen corresponding path program 1 times [2023-11-26 12:06:33,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:33,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836816034] [2023-11-26 12:06:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:33,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:06:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:33,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:33,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 12:06:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:34,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 12:06:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:34,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:34,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:34,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 12:06:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:34,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:34,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836816034] [2023-11-26 12:06:34,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836816034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:34,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:34,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:06:34,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434677020] [2023-11-26 12:06:34,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:34,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:34,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:34,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:34,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:34,135 INFO L87 Difference]: Start difference. First operand 556 states and 931 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:06:40,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:40,991 INFO L93 Difference]: Finished difference Result 1258 states and 2135 transitions. [2023-11-26 12:06:40,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:06:40,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2023-11-26 12:06:40,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:40,999 INFO L225 Difference]: With dead ends: 1258 [2023-11-26 12:06:40,999 INFO L226 Difference]: Without dead ends: 714 [2023-11-26 12:06:41,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:06:41,004 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 697 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:41,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1080 Invalid, 2927 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-26 12:06:41,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2023-11-26 12:06:41,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 556. [2023-11-26 12:06:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 433 states have (on average 1.7066974595842956) internal successors, (739), 454 states have internal predecessors, (739), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2023-11-26 12:06:41,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 930 transitions. [2023-11-26 12:06:41,159 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 930 transitions. Word has length 55 [2023-11-26 12:06:41,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:41,159 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 930 transitions. [2023-11-26 12:06:41,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:06:41,160 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 930 transitions. [2023-11-26 12:06:41,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 12:06:41,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:41,162 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] [2023-11-26 12:06:41,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:06:41,162 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:41,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:41,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1091290384, now seen corresponding path program 1 times [2023-11-26 12:06:41,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:41,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166191434] [2023-11-26 12:06:41,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:41,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:41,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:06:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:41,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:41,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 12:06:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:41,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 12:06:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:42,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:42,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:06:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:42,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 12:06:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:42,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:42,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166191434] [2023-11-26 12:06:42,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166191434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:42,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:42,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:06:42,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437127979] [2023-11-26 12:06:42,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:42,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:42,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:42,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:42,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:42,034 INFO L87 Difference]: Start difference. First operand 556 states and 930 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)