./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU --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 e1240a0d3e559b8971965b03cecb352351a22be921567ab044722f9bb2872bc1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:57:02,999 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:57:03,108 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:57:03,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:57:03,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:57:03,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:57:03,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:57:03,158 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:57:03,160 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:57:03,161 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:57:03,163 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:57:03,164 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:57:03,165 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:57:03,165 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:57:03,166 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:57:03,166 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:57:03,166 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:57:03,167 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:57:03,167 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:57:03,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:57:03,168 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:57:03,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:57:03,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:57:03,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:57:03,174 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:57:03,175 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:57:03,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:57:03,176 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:57:03,177 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:57:03,177 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:57:03,177 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:57:03,178 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:57:03,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:57:03,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:57:03,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:57:03,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:57:03,181 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:57:03,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:57:03,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:57:03,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:57:03,182 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:57:03,183 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:57:03,183 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_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1240a0d3e559b8971965b03cecb352351a22be921567ab044722f9bb2872bc1 [2024-10-31 21:57:03,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:57:03,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:57:03,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:57:03,555 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:57:03,556 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:57:03,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c Unable to find full path for "g++" [2024-10-31 21:57:05,652 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:57:06,111 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:57:06,116 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17c888d-038b-408a-b131-80db4f8b00f8/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c [2024-10-31 21:57:06,147 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU/data/15ae9ccdf/10674fc8f20840988be1911f164004be/FLAGfb19eb107 [2024-10-31 21:57:06,274 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU/data/15ae9ccdf/10674fc8f20840988be1911f164004be [2024-10-31 21:57:06,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:57:06,281 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:57:06,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:57:06,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:57:06,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:57:06,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:57:06" (1/1) ... [2024-10-31 21:57:06,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fb0bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:06, skipping insertion in model container [2024-10-31 21:57:06,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:57:06" (1/1) ... [2024-10-31 21:57:06,390 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:57:06,928 WARN L251 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_a17c888d-038b-408a-b131-80db4f8b00f8/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c[38445,38458] [2024-10-31 21:57:07,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:57:07,140 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:57:07,151 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [48] [2024-10-31 21:57:07,152 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [236] [2024-10-31 21:57:07,152 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1824] [2024-10-31 21:57:07,156 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1833] [2024-10-31 21:57:07,157 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2199] [2024-10-31 21:57:07,157 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2861] [2024-10-31 21:57:07,157 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2875] [2024-10-31 21:57:07,157 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2913] [2024-10-31 21:57:07,158 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3006] [2024-10-31 21:57:07,158 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3356] [2024-10-31 21:57:07,248 WARN L251 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_a17c888d-038b-408a-b131-80db4f8b00f8/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c[38445,38458] [2024-10-31 21:57:07,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:57:07,369 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:57:07,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:07 WrapperNode [2024-10-31 21:57:07,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:57:07,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:57:07,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:57:07,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:57:07,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:07" (1/1) ... [2024-10-31 21:57:07,471 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:07" (1/1) ... [2024-10-31 21:57:07,587 INFO L138 Inliner]: procedures = 96, calls = 346, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 1133 [2024-10-31 21:57:07,587 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:57:07,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:57:07,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:57:07,588 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:57:07,603 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:07" (1/1) ... [2024-10-31 21:57:07,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:07" (1/1) ... [2024-10-31 21:57:07,610 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:07" (1/1) ... [2024-10-31 21:57:07,639 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]. [2024-10-31 21:57:07,639 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:07" (1/1) ... [2024-10-31 21:57:07,640 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:07" (1/1) ... [2024-10-31 21:57:07,673 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:07" (1/1) ... [2024-10-31 21:57:07,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:07" (1/1) ... [2024-10-31 21:57:07,694 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:07" (1/1) ... [2024-10-31 21:57:07,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:07" (1/1) ... [2024-10-31 21:57:07,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:57:07,715 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:57:07,715 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:57:07,716 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:57:07,716 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:07" (1/1) ... [2024-10-31 21:57:07,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:57:07,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:07,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:57:07,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17c888d-038b-408a-b131-80db4f8b00f8/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:57:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:57:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-10-31 21:57:07,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-10-31 21:57:07,811 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-10-31 21:57:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-10-31 21:57:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-10-31 21:57:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-10-31 21:57:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-10-31 21:57:07,813 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-10-31 21:57:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-10-31 21:57:07,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-10-31 21:57:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-10-31 21:57:07,815 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-10-31 21:57:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-10-31 21:57:07,815 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-10-31 21:57:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-10-31 21:57:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-10-31 21:57:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-10-31 21:57:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-10-31 21:57:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-10-31 21:57:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-10-31 21:57:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-10-31 21:57:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-10-31 21:57:07,820 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-10-31 21:57:07,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-10-31 21:57:07,821 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-10-31 21:57:07,821 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-10-31 21:57:07,821 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-10-31 21:57:07,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-10-31 21:57:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-10-31 21:57:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-10-31 21:57:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-10-31 21:57:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-10-31 21:57:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-10-31 21:57:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-10-31 21:57:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-10-31 21:57:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-10-31 21:57:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-10-31 21:57:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-10-31 21:57:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-10-31 21:57:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-10-31 21:57:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:57:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 21:57:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 21:57:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 21:57:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-31 21:57:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-31 21:57:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-31 21:57:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-31 21:57:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-31 21:57:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-31 21:57:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-31 21:57:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-31 21:57:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-31 21:57:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-31 21:57:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-10-31 21:57:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-10-31 21:57:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-10-31 21:57:07,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-10-31 21:57:07,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-10-31 21:57:07,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-10-31 21:57:07,826 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-10-31 21:57:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-10-31 21:57:07,826 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-10-31 21:57:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-10-31 21:57:07,826 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-10-31 21:57:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-10-31 21:57:07,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:57:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:57:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-10-31 21:57:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-10-31 21:57:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-10-31 21:57:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-10-31 21:57:08,072 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:57:08,076 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:57:09,691 INFO L? ?]: Removed 451 outVars from TransFormulas that were not future-live. [2024-10-31 21:57:09,692 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:57:09,738 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:57:09,740 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 21:57:09,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:57:09 BoogieIcfgContainer [2024-10-31 21:57:09,742 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:57:09,746 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:57:09,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:57:09,751 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:57:09,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:57:06" (1/3) ... [2024-10-31 21:57:09,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c7ef09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:57:09, skipping insertion in model container [2024-10-31 21:57:09,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:07" (2/3) ... [2024-10-31 21:57:09,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c7ef09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:57:09, skipping insertion in model container [2024-10-31 21:57:09,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:57:09" (3/3) ... [2024-10-31 21:57:09,761 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product20.cil.c [2024-10-31 21:57:09,786 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:57:09,786 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 21:57:09,952 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:57:09,960 INFO L333 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, 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;@346b8d50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:57:09,961 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 21:57:09,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 569 states, 443 states have (on average 1.6862302483069977) internal successors, (747), 466 states have internal predecessors, (747), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) [2024-10-31 21:57:09,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-31 21:57:09,993 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:09,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:09,995 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:10,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:10,003 INFO L85 PathProgramCache]: Analyzing trace with hash 69269955, now seen corresponding path program 1 times [2024-10-31 21:57:10,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:10,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559987283] [2024-10-31 21:57:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:10,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:10,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:10,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:10,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-31 21:57:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:11,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 21:57:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:11,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:11,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:11,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:57:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:11,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:11,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559987283] [2024-10-31 21:57:11,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559987283] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:11,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:11,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:57:11,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702264026] [2024-10-31 21:57:11,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:11,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:57:11,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:11,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:57:11,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:57:11,648 INFO L87 Difference]: Start difference. First operand has 569 states, 443 states have (on average 1.6862302483069977) internal successors, (747), 466 states have internal predecessors, (747), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2024-10-31 21:57:19,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:19,061 INFO L93 Difference]: Finished difference Result 1281 states and 2159 transitions. [2024-10-31 21:57:19,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:57:19,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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 60 [2024-10-31 21:57:19,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:19,106 INFO L225 Difference]: With dead ends: 1281 [2024-10-31 21:57:19,106 INFO L226 Difference]: Without dead ends: 724 [2024-10-31 21:57:19,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:57:19,122 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 686 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:19,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1196 Invalid, 2862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 2738 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-10-31 21:57:19,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-10-31 21:57:19,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2024-10-31 21:57:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6819221967963387) internal successors, (735), 458 states have internal predecessors, (735), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-10-31 21:57:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 928 transitions. [2024-10-31 21:57:19,382 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 928 transitions. Word has length 60 [2024-10-31 21:57:19,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:19,383 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 928 transitions. [2024-10-31 21:57:19,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (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) [2024-10-31 21:57:19,384 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 928 transitions. [2024-10-31 21:57:19,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-31 21:57:19,390 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:19,390 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:19,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:57:19,391 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:19,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:19,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1582622137, now seen corresponding path program 1 times [2024-10-31 21:57:19,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:19,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296422305] [2024-10-31 21:57:19,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:19,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:19,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:19,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:19,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:20,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-31 21:57:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:20,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:20,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:20,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:57:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:20,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:20,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296422305] [2024-10-31 21:57:20,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296422305] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:20,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:20,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:57:20,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139388390] [2024-10-31 21:57:20,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:20,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:57:20,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:20,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:57:20,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:57:20,300 INFO L87 Difference]: Start difference. First operand 561 states and 928 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (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) [2024-10-31 21:57:27,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:27,407 INFO L93 Difference]: Finished difference Result 1267 states and 2125 transitions. [2024-10-31 21:57:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:57:27,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (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 63 [2024-10-31 21:57:27,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:27,427 INFO L225 Difference]: With dead ends: 1267 [2024-10-31 21:57:27,427 INFO L226 Difference]: Without dead ends: 724 [2024-10-31 21:57:27,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:57:27,433 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 684 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 2727 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 2853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:27,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1156 Invalid, 2853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 2727 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-10-31 21:57:27,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-10-31 21:57:27,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2024-10-31 21:57:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6796338672768878) internal successors, (734), 458 states have internal predecessors, (734), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-10-31 21:57:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 927 transitions. [2024-10-31 21:57:27,679 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 927 transitions. Word has length 63 [2024-10-31 21:57:27,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:27,679 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 927 transitions. [2024-10-31 21:57:27,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (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) [2024-10-31 21:57:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 927 transitions. [2024-10-31 21:57:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-31 21:57:27,682 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:27,682 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:27,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:57:27,683 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:27,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:27,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1632470035, now seen corresponding path program 1 times [2024-10-31 21:57:27,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:27,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112604211] [2024-10-31 21:57:27,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:27,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:28,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:28,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:28,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:57:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:28,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-31 21:57:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:28,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:28,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:28,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:57:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:28,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:28,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112604211] [2024-10-31 21:57:28,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112604211] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:28,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:28,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:57:28,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870162809] [2024-10-31 21:57:28,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:28,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:57:28,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:28,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:57:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:57:28,644 INFO L87 Difference]: Start difference. First operand 561 states and 927 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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) [2024-10-31 21:57:34,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:34,853 INFO L93 Difference]: Finished difference Result 1267 states and 2124 transitions. [2024-10-31 21:57:34,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:57:34,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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 64 [2024-10-31 21:57:34,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:34,861 INFO L225 Difference]: With dead ends: 1267 [2024-10-31 21:57:34,861 INFO L226 Difference]: Without dead ends: 724 [2024-10-31 21:57:34,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:57:34,866 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 1130 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:34,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 1148 Invalid, 2847 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [271 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-10-31 21:57:34,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-10-31 21:57:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2024-10-31 21:57:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.677345537757437) internal successors, (733), 458 states have internal predecessors, (733), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-10-31 21:57:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 926 transitions. [2024-10-31 21:57:35,021 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 926 transitions. Word has length 64 [2024-10-31 21:57:35,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:35,022 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 926 transitions. [2024-10-31 21:57:35,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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) [2024-10-31 21:57:35,025 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 926 transitions. [2024-10-31 21:57:35,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 21:57:35,027 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:35,027 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:35,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:57:35,027 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:35,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:35,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2079372939, now seen corresponding path program 1 times [2024-10-31 21:57:35,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:35,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152502866] [2024-10-31 21:57:35,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:35,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:35,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 21:57:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:35,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:35,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 21:57:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:35,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 21:57:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:35,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:35,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:35,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:57:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:35,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:35,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152502866] [2024-10-31 21:57:35,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152502866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:35,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:35,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:57:35,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298921481] [2024-10-31 21:57:35,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:35,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:57:35,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:35,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:57:35,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:57:35,800 INFO L87 Difference]: Start difference. First operand 561 states and 926 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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)