./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx --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 5c2801af81eeb5fcd439b1a1907444cd22ba07dc03ae6cb195ad73614e32dad5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:23:28,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:23:28,216 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:23:28,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:23:28,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:23:28,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:23:28,256 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:23:28,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:23:28,258 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:23:28,258 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:23:28,259 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:23:28,260 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:23:28,261 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:23:28,261 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:23:28,262 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:23:28,262 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:23:28,263 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:23:28,264 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:23:28,264 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:23:28,265 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:23:28,265 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:23:28,266 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:23:28,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:23:28,267 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:23:28,268 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:23:28,268 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:23:28,269 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:23:28,269 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:23:28,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:23:28,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:23:28,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:23:28,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:23:28,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:23:28,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:23:28,273 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:23:28,273 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:23:28,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:23:28,274 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:23:28,274 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:23:28,275 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:23:28,275 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:23:28,275 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:23:28,276 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_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c2801af81eeb5fcd439b1a1907444cd22ba07dc03ae6cb195ad73614e32dad5 [2023-11-21 22:23:28,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:23:28,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:23:28,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:23:28,644 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:23:28,645 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:23:28,646 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2023-11-21 22:23:31,929 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:23:32,369 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:23:32,372 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2023-11-21 22:23:32,406 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/data/639ac18a0/5a344722760e48e1ab968de54fc3d32b/FLAG15dc7099f [2023-11-21 22:23:32,425 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/data/639ac18a0/5a344722760e48e1ab968de54fc3d32b [2023-11-21 22:23:32,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:23:32,433 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:23:32,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:23:32,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:23:32,441 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:23:32,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:23:32" (1/1) ... [2023-11-21 22:23:32,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297c1005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:32, skipping insertion in model container [2023-11-21 22:23:32,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:23:32" (1/1) ... [2023-11-21 22:23:32,549 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:23:33,150 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_cc2f9c10-99d6-4866-82c1-8005eb0bba07/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c[62420,62433] [2023-11-21 22:23:33,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:23:33,240 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:23:33,252 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-11-21 22:23:33,253 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [408] [2023-11-21 22:23:33,254 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [528] [2023-11-21 22:23:33,254 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [622] [2023-11-21 22:23:33,254 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2141] [2023-11-21 22:23:33,255 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2802] [2023-11-21 22:23:33,256 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [2817] [2023-11-21 22:23:33,256 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3004] [2023-11-21 22:23:33,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3013] [2023-11-21 22:23:33,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3379] [2023-11-21 22:23:33,414 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_cc2f9c10-99d6-4866-82c1-8005eb0bba07/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c[62420,62433] [2023-11-21 22:23:33,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:23:33,493 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:23:33,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:33 WrapperNode [2023-11-21 22:23:33,494 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:23:33,495 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:23:33,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:23:33,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:23:33,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:33" (1/1) ... [2023-11-21 22:23:33,565 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:33" (1/1) ... [2023-11-21 22:23:33,624 INFO L138 Inliner]: procedures = 90, calls = 345, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 883 [2023-11-21 22:23:33,625 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:23:33,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:23:33,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:23:33,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:23:33,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:33" (1/1) ... [2023-11-21 22:23:33,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:33" (1/1) ... [2023-11-21 22:23:33,644 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:33" (1/1) ... [2023-11-21 22:23:33,689 INFO L187 HeapSplitter]: 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] [2023-11-21 22:23:33,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:33" (1/1) ... [2023-11-21 22:23:33,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:33" (1/1) ... [2023-11-21 22:23:33,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:33" (1/1) ... [2023-11-21 22:23:33,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:33" (1/1) ... [2023-11-21 22:23:33,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:33" (1/1) ... [2023-11-21 22:23:33,805 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:33" (1/1) ... [2023-11-21 22:23:33,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:23:33,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:23:33,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:23:33,827 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:23:33,828 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:33" (1/1) ... [2023-11-21 22:23:33,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:23:33,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:23:33,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:23:33,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:23:33,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:23:33,918 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-21 22:23:33,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-21 22:23:33,918 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-21 22:23:33,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-21 22:23:33,918 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-21 22:23:33,918 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-21 22:23:33,919 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-21 22:23:33,919 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-21 22:23:33,919 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-21 22:23:33,920 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-21 22:23:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-21 22:23:33,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-21 22:23:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 22:23:33,920 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 22:23:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 22:23:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 22:23:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-21 22:23:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-21 22:23:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-21 22:23:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-21 22:23:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-21 22:23:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-21 22:23:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-21 22:23:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-21 22:23:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-21 22:23:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-21 22:23:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-11-21 22:23:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-11-21 22:23:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-21 22:23:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-21 22:23:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-11-21 22:23:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-11-21 22:23:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-21 22:23:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-21 22:23:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-21 22:23:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-21 22:23:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-21 22:23:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-21 22:23:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-21 22:23:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-21 22:23:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:23:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:23:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:23:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:23:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:23:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 22:23:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 22:23:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-21 22:23:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-21 22:23:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-21 22:23:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-21 22:23:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-21 22:23:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-21 22:23:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-21 22:23:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-21 22:23:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-21 22:23:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-21 22:23:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-21 22:23:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-21 22:23:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-21 22:23:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-21 22:23:33,934 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-21 22:23:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-21 22:23:33,934 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-21 22:23:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-21 22:23:33,935 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-21 22:23:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-21 22:23:33,935 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-21 22:23:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-11-21 22:23:33,935 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-11-21 22:23:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:23:33,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:23:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-21 22:23:33,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-21 22:23:34,145 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:23:34,148 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:23:35,477 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:23:36,676 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:23:36,676 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:23:36,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:23:36 BoogieIcfgContainer [2023-11-21 22:23:36,678 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:23:36,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:23:36,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:23:36,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:23:36,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:23:32" (1/3) ... [2023-11-21 22:23:36,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d743e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:23:36, skipping insertion in model container [2023-11-21 22:23:36,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:33" (2/3) ... [2023-11-21 22:23:36,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d743e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:23:36, skipping insertion in model container [2023-11-21 22:23:36,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:23:36" (3/3) ... [2023-11-21 22:23:36,691 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product21.cil.c [2023-11-21 22:23:36,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:23:36,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:23:36,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:23:36,804 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;@6fb978a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:23:36,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:23:36,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 404 states, 270 states have (on average 1.5740740740740742) internal successors, (425), 288 states have internal predecessors, (425), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2023-11-21 22:23:36,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-21 22:23:36,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:23:36,850 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:23:36,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:23:36,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:36,859 INFO L85 PathProgramCache]: Analyzing trace with hash -198505702, now seen corresponding path program 1 times [2023-11-21 22:23:36,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:36,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119848407] [2023-11-21 22:23:36,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:36,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:38,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:23:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:38,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:38,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:23:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:38,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:38,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:23:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:38,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:23:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:38,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:23:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:38,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:23:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:38,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-21 22:23:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:38,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:23:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:38,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 22:23:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:38,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-21 22:23:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:23:38,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:38,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119848407] [2023-11-21 22:23:38,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119848407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:38,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:38,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:23:38,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968154461] [2023-11-21 22:23:38,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:38,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:23:38,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:38,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:23:38,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:23:38,848 INFO L87 Difference]: Start difference. First operand has 404 states, 270 states have (on average 1.5740740740740742) internal successors, (425), 288 states have internal predecessors, (425), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-21 22:23:48,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:23:48,805 INFO L93 Difference]: Finished difference Result 1353 states and 2199 transitions. [2023-11-21 22:23:48,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 22:23:48,814 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 75 [2023-11-21 22:23:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:23:48,849 INFO L225 Difference]: With dead ends: 1353 [2023-11-21 22:23:48,849 INFO L226 Difference]: Without dead ends: 947 [2023-11-21 22:23:48,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:23:48,869 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 1341 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 3405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:23:48,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 1694 Invalid, 3405 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [652 Valid, 2753 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-11-21 22:23:48,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2023-11-21 22:23:49,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 740. [2023-11-21 22:23:49,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 497 states have (on average 1.5010060362173039) internal successors, (746), 527 states have internal predecessors, (746), 196 states have call successors, (196), 49 states have call predecessors, (196), 46 states have return successors, (201), 187 states have call predecessors, (201), 192 states have call successors, (201) [2023-11-21 22:23:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1143 transitions. [2023-11-21 22:23:49,229 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1143 transitions. Word has length 75 [2023-11-21 22:23:49,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:23:49,231 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1143 transitions. [2023-11-21 22:23:49,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-21 22:23:49,232 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1143 transitions. [2023-11-21 22:23:49,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-21 22:23:49,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:23:49,240 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:23:49,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:23:49,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:23:49,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:49,246 INFO L85 PathProgramCache]: Analyzing trace with hash 695289329, now seen corresponding path program 1 times [2023-11-21 22:23:49,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:49,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45698819] [2023-11-21 22:23:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:49,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:23:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:23:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:23:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:23:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:23:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:23:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 22:23:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-21 22:23:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:23:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:23:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-21 22:23:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-21 22:23:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:23:50,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:50,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45698819] [2023-11-21 22:23:50,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45698819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:50,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:50,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:23:50,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017356293] [2023-11-21 22:23:50,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:50,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:23:50,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:50,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:23:50,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:23:50,534 INFO L87 Difference]: Start difference. First operand 740 states and 1143 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-21 22:24:01,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:24:01,922 INFO L93 Difference]: Finished difference Result 2515 states and 4011 transitions. [2023-11-21 22:24:01,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 22:24:01,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 80 [2023-11-21 22:24:01,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:24:01,949 INFO L225 Difference]: With dead ends: 2515 [2023-11-21 22:24:01,949 INFO L226 Difference]: Without dead ends: 1787 [2023-11-21 22:24:01,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:24:01,963 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 2307 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 3623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 996 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:24:01,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2400 Valid, 1728 Invalid, 3623 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [996 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-21 22:24:01,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2023-11-21 22:24:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1387. [2023-11-21 22:24:02,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 949 states have (on average 1.5047418335089568) internal successors, (1428), 1007 states have internal predecessors, (1428), 351 states have call successors, (351), 91 states have call predecessors, (351), 86 states have return successors, (387), 324 states have call predecessors, (387), 345 states have call successors, (387) [2023-11-21 22:24:02,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 2166 transitions. [2023-11-21 22:24:02,552 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 2166 transitions. Word has length 80 [2023-11-21 22:24:02,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:24:02,553 INFO L495 AbstractCegarLoop]: Abstraction has 1387 states and 2166 transitions. [2023-11-21 22:24:02,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-21 22:24:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 2166 transitions. [2023-11-21 22:24:02,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-21 22:24:02,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:02,556 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:24:02,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:24:02,557 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:24:02,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:02,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1980422698, now seen corresponding path program 1 times [2023-11-21 22:24:02,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:02,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211171864] [2023-11-21 22:24:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:02,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:03,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:24:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:03,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:24:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:03,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:24:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:03,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:24:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:03,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:24:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:03,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:24:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:03,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:24:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:03,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:24:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:03,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-21 22:24:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:03,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:24:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:24:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:03,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-21 22:24:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:03,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-21 22:24:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:24:03,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:03,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211171864] [2023-11-21 22:24:03,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211171864] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:24:03,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126329583] [2023-11-21 22:24:03,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:03,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:24:03,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:24:03,685 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:24:03,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:24:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:04,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:24:04,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:24:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:04,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:24:04,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126329583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:04,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:24:04,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-21 22:24:04,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973583925] [2023-11-21 22:24:04,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:04,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:24:04,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:04,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:24:04,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:24:04,417 INFO L87 Difference]: Start difference. First operand 1387 states and 2166 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-21 22:24:05,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:24:05,896 INFO L93 Difference]: Finished difference Result 3959 states and 6368 transitions. [2023-11-21 22:24:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:24:05,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 80 [2023-11-21 22:24:05,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:24:05,929 INFO L225 Difference]: With dead ends: 3959 [2023-11-21 22:24:05,929 INFO L226 Difference]: Without dead ends: 2584 [2023-11-21 22:24:05,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:24:05,949 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 560 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:24:05,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 1128 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:24:05,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2023-11-21 22:24:07,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 2509. [2023-11-21 22:24:07,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 1727 states have (on average 1.5176606832657789) internal successors, (2621), 1843 states have internal predecessors, (2621), 620 states have call successors, (620), 162 states have call predecessors, (620), 161 states have return successors, (714), 575 states have call predecessors, (714), 614 states have call successors, (714) [2023-11-21 22:24:07,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3955 transitions. [2023-11-21 22:24:07,190 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3955 transitions. Word has length 80 [2023-11-21 22:24:07,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:24:07,191 INFO L495 AbstractCegarLoop]: Abstraction has 2509 states and 3955 transitions. [2023-11-21 22:24:07,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-21 22:24:07,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3955 transitions. [2023-11-21 22:24:07,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-21 22:24:07,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:07,200 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:24:07,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 22:24:07,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:24:07,428 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:24:07,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:07,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1608148270, now seen corresponding path program 1 times [2023-11-21 22:24:07,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:07,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051578565] [2023-11-21 22:24:07,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:07,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:08,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:24:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:08,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:24:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:08,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:24:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:08,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:24:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:08,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:24:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:08,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:24:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:08,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:24:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:08,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:24:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:08,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-21 22:24:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:24:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:08,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:24:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:08,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-21 22:24:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:08,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-21 22:24:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:08,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:24:08,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:08,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051578565] [2023-11-21 22:24:08,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051578565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:24:08,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82667997] [2023-11-21 22:24:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:08,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:24:08,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:24:08,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:24:08,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:24:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:09,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:24:09,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:24:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:09,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:24:09,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82667997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:09,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:24:09,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-21 22:24:09,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854846845] [2023-11-21 22:24:09,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:09,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:24:09,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:09,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:24:09,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:24:09,364 INFO L87 Difference]: Start difference. First operand 2509 states and 3955 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-21 22:24:11,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:24:11,108 INFO L93 Difference]: Finished difference Result 5638 states and 9012 transitions. [2023-11-21 22:24:11,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:24:11,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 80 [2023-11-21 22:24:11,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:24:11,146 INFO L225 Difference]: With dead ends: 5638 [2023-11-21 22:24:11,146 INFO L226 Difference]: Without dead ends: 3141 [2023-11-21 22:24:11,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:24:11,174 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 557 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:24:11,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 1094 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:24:11,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2023-11-21 22:24:12,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 3098. [2023-11-21 22:24:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 2141 states have (on average 1.5263895375992527) internal successors, (3268), 2286 states have internal predecessors, (3268), 757 states have call successors, (757), 196 states have call predecessors, (757), 199 states have return successors, (877), 705 states have call predecessors, (877), 751 states have call successors, (877) [2023-11-21 22:24:12,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 4902 transitions. [2023-11-21 22:24:12,274 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 4902 transitions. Word has length 80 [2023-11-21 22:24:12,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:24:12,275 INFO L495 AbstractCegarLoop]: Abstraction has 3098 states and 4902 transitions. [2023-11-21 22:24:12,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-21 22:24:12,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 4902 transitions. [2023-11-21 22:24:12,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-21 22:24:12,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:12,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:24:12,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:24:12,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc2f9c10-99d6-4866-82c1-8005eb0bba07/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-21 22:24:12,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:24:12,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:12,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1228493499, now seen corresponding path program 1 times [2023-11-21 22:24:12,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:12,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843368061] [2023-11-21 22:24:12,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:12,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat