./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/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_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/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_27558c22-e1df-41c8-8dcc-5fe951260a71/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 d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:12:56,993 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:12:57,120 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:12:57,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:12:57,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:12:57,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:12:57,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:12:57,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:12:57,174 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:12:57,179 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:12:57,179 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:12:57,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:12:57,181 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:12:57,183 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:12:57,183 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:12:57,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:12:57,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:12:57,185 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:12:57,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:12:57,186 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:12:57,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:12:57,187 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:12:57,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:12:57,188 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:12:57,189 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:12:57,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:12:57,190 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:12:57,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:12:57,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:12:57,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:12:57,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:12:57,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:12:57,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:12:57,194 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:12:57,195 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:12:57,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:12:57,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:12:57,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:12:57,196 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:12:57,197 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:12:57,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:12:57,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:12:57,198 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_27558c22-e1df-41c8-8dcc-5fe951260a71/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f [2023-11-21 22:12:57,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:12:57,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:12:57,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:12:57,560 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:12:57,560 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:12:57,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2023-11-21 22:13:00,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:13:01,137 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:13:01,138 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2023-11-21 22:13:01,161 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/data/943d4a916/ee64a59034c041988a7b585dda58842e/FLAG6f85cc79c [2023-11-21 22:13:01,175 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/data/943d4a916/ee64a59034c041988a7b585dda58842e [2023-11-21 22:13:01,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:13:01,180 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:13:01,181 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:01,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:13:01,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:13:01,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:01" (1/1) ... [2023-11-21 22:13:01,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bbae4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:01, skipping insertion in model container [2023-11-21 22:13:01,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:01" (1/1) ... [2023-11-21 22:13:01,295 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:13:01,961 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_27558c22-e1df-41c8-8dcc-5fe951260a71/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c[61393,61406] [2023-11-21 22:13:02,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:02,022 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:13:02,033 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2023-11-21 22:13:02,034 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [169] [2023-11-21 22:13:02,035 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [837] [2023-11-21 22:13:02,035 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [932] [2023-11-21 22:13:02,035 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1290] [2023-11-21 22:13:02,036 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1382] [2023-11-21 22:13:02,037 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2960] [2023-11-21 22:13:02,037 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2995] [2023-11-21 22:13:02,038 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3004] [2023-11-21 22:13:02,038 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3019] [2023-11-21 22:13:02,154 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_27558c22-e1df-41c8-8dcc-5fe951260a71/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c[61393,61406] [2023-11-21 22:13:02,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:02,204 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:13:02,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02 WrapperNode [2023-11-21 22:13:02,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:02,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:13:02,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:13:02,206 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:13:02,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02" (1/1) ... [2023-11-21 22:13:02,246 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02" (1/1) ... [2023-11-21 22:13:02,316 INFO L138 Inliner]: procedures = 93, calls = 346, calls flagged for inlining = 30, calls inlined = 26, statements flattened = 882 [2023-11-21 22:13:02,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:13:02,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:13:02,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:13:02,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:13:02,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02" (1/1) ... [2023-11-21 22:13:02,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02" (1/1) ... [2023-11-21 22:13:02,338 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02" (1/1) ... [2023-11-21 22:13:02,366 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 22:13:02,367 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02" (1/1) ... [2023-11-21 22:13:02,367 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02" (1/1) ... [2023-11-21 22:13:02,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02" (1/1) ... [2023-11-21 22:13:02,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02" (1/1) ... [2023-11-21 22:13:02,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02" (1/1) ... [2023-11-21 22:13:02,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02" (1/1) ... [2023-11-21 22:13:02,503 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:13:02,504 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:13:02,505 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:13:02,505 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:13:02,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02" (1/1) ... [2023-11-21 22:13:02,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:13:02,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:02,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:13:02,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:13:02,595 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-21 22:13:02,596 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-21 22:13:02,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:13:02,596 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-21 22:13:02,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-21 22:13:02,596 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-21 22:13:02,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-21 22:13:02,597 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-11-21 22:13:02,597 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-11-21 22:13:02,598 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-21 22:13:02,598 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-21 22:13:02,598 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-21 22:13:02,598 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-21 22:13:02,599 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-21 22:13:02,599 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-21 22:13:02,600 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-21 22:13:02,600 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-21 22:13:02,600 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-11-21 22:13:02,600 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-11-21 22:13:02,601 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 22:13:02,602 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 22:13:02,602 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 22:13:02,602 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 22:13:02,602 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-21 22:13:02,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-21 22:13:02,603 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-21 22:13:02,603 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-21 22:13:02,603 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-21 22:13:02,604 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-21 22:13:02,604 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-21 22:13:02,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-21 22:13:02,604 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-21 22:13:02,604 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-21 22:13:02,604 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-21 22:13:02,605 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-21 22:13:02,605 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-21 22:13:02,605 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-21 22:13:02,605 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-21 22:13:02,605 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-21 22:13:02,605 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-21 22:13:02,606 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-21 22:13:02,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:13:02,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:13:02,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:13:02,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:13:02,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:13:02,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 22:13:02,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 22:13:02,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-21 22:13:02,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-21 22:13:02,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-21 22:13:02,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-21 22:13:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-21 22:13:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-21 22:13:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-21 22:13:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-21 22:13:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-21 22:13:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-21 22:13:02,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-21 22:13:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-21 22:13:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-21 22:13:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-21 22:13:02,611 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-21 22:13:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-21 22:13:02,612 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-21 22:13:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-21 22:13:02,612 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-21 22:13:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-21 22:13:02,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-21 22:13:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-11-21 22:13:02,613 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-11-21 22:13:02,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:13:02,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:13:02,613 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-21 22:13:02,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-21 22:13:02,869 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:13:02,872 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:13:04,100 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:13:05,365 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:13:05,365 INFO L308 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-21 22:13:05,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:05 BoogieIcfgContainer [2023-11-21 22:13:05,367 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:13:05,370 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:13:05,370 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:13:05,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:13:05,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:13:01" (1/3) ... [2023-11-21 22:13:05,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d298b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:05, skipping insertion in model container [2023-11-21 22:13:05,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:02" (2/3) ... [2023-11-21 22:13:05,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d298b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:05, skipping insertion in model container [2023-11-21 22:13:05,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:05" (3/3) ... [2023-11-21 22:13:05,376 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product30.cil.c [2023-11-21 22:13:05,399 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:13:05,399 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:13:05,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:13:05,470 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;@750e3e62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:13:05,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:13:05,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 416 states, 286 states have (on average 1.597902097902098) internal successors, (457), 306 states have internal predecessors, (457), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-21 22:13:05,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-21 22:13:05,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:13:05,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-11-21 22:13:05,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:13:05,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:05,535 INFO L85 PathProgramCache]: Analyzing trace with hash -877894633, now seen corresponding path program 1 times [2023-11-21 22:13:05,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:05,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040160056] [2023-11-21 22:13:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:05,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:06,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:13:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:06,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:13:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:06,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:13:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:06,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:06,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:06,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 22:13:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:06,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:13:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:06,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-21 22:13:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:06,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-21 22:13:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:06,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:13:06,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:06,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040160056] [2023-11-21 22:13:06,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040160056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:06,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:06,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:13:06,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051385645] [2023-11-21 22:13:06,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:06,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:06,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:06,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:06,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:06,616 INFO L87 Difference]: Start difference. First operand has 416 states, 286 states have (on average 1.597902097902098) internal successors, (457), 306 states have internal predecessors, (457), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-21 22:13:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:13:09,372 INFO L93 Difference]: Finished difference Result 895 states and 1453 transitions. [2023-11-21 22:13:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:09,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 58 [2023-11-21 22:13:09,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:13:09,397 INFO L225 Difference]: With dead ends: 895 [2023-11-21 22:13:09,397 INFO L226 Difference]: Without dead ends: 487 [2023-11-21 22:13:09,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:09,412 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 447 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:13:09,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 402 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-21 22:13:09,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-11-21 22:13:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 410. [2023-11-21 22:13:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 283 states have (on average 1.5724381625441697) internal successors, (445), 301 states have internal predecessors, (445), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-21 22:13:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 646 transitions. [2023-11-21 22:13:09,621 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 646 transitions. Word has length 58 [2023-11-21 22:13:09,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:13:09,622 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 646 transitions. [2023-11-21 22:13:09,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-21 22:13:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 646 transitions. [2023-11-21 22:13:09,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-21 22:13:09,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:13:09,629 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-21 22:13:09,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:13:09,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:13:09,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:09,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1593842826, now seen corresponding path program 1 times [2023-11-21 22:13:09,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:09,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954603152] [2023-11-21 22:13:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:09,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:10,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:13:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:10,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:13:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:10,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:13:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:10,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:10,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:13:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:11,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:11,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:13:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:11,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 22:13:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:11,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-21 22:13:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-21 22:13:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:13:11,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:11,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954603152] [2023-11-21 22:13:11,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954603152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:11,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:11,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:13:11,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822649391] [2023-11-21 22:13:11,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:11,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:13:11,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:11,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:13:11,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:13:11,048 INFO L87 Difference]: Start difference. First operand 410 states and 646 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-21 22:13:24,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:13:24,526 INFO L93 Difference]: Finished difference Result 2048 states and 3317 transitions. [2023-11-21 22:13:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 22:13:24,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 70 [2023-11-21 22:13:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:13:24,550 INFO L225 Difference]: With dead ends: 2048 [2023-11-21 22:13:24,551 INFO L226 Difference]: Without dead ends: 1653 [2023-11-21 22:13:24,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:13:24,559 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 2920 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 3137 mSolverCounterSat, 959 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3072 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 4096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 959 IncrementalHoareTripleChecker+Valid, 3137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:13:24,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3072 Valid, 1394 Invalid, 4096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [959 Valid, 3137 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-11-21 22:13:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2023-11-21 22:13:25,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1376. [2023-11-21 22:13:25,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 958 states have (on average 1.5762004175365345) internal successors, (1510), 1010 states have internal predecessors, (1510), 347 states have call successors, (347), 67 states have call predecessors, (347), 70 states have return successors, (368), 323 states have call predecessors, (368), 343 states have call successors, (368) [2023-11-21 22:13:25,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 2225 transitions. [2023-11-21 22:13:25,032 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 2225 transitions. Word has length 70 [2023-11-21 22:13:25,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:13:25,032 INFO L495 AbstractCegarLoop]: Abstraction has 1376 states and 2225 transitions. [2023-11-21 22:13:25,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-21 22:13:25,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 2225 transitions. [2023-11-21 22:13:25,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-21 22:13:25,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:13:25,039 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-21 22:13:25,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:13:25,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:13:25,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:25,041 INFO L85 PathProgramCache]: Analyzing trace with hash -401265992, now seen corresponding path program 1 times [2023-11-21 22:13:25,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:25,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146210112] [2023-11-21 22:13:25,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:25,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:25,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:13:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:25,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:13:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:25,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:13:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:25,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:26,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:13:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:26,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:26,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:13:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:26,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:13:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:26,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:13:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:26,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:13:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:27,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:13:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:27,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-21 22:13:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:27,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-21 22:13:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:27,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:13:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:27,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:13:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:27,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:13:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:27,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:13:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:27,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-21 22:13:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:27,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-21 22:13:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:27,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-21 22:13:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-21 22:13:27,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:27,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146210112] [2023-11-21 22:13:27,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146210112] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:13:27,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392729709] [2023-11-21 22:13:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:27,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:27,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:27,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:13:27,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:13:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:27,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 2094 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:13:27,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:13:28,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:28,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392729709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:28,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:13:28,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2023-11-21 22:13:28,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216845089] [2023-11-21 22:13:28,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:28,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:13:28,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:28,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:13:28,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:13:28,010 INFO L87 Difference]: Start difference. First operand 1376 states and 2225 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 5 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-21 22:13:31,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:13:31,179 INFO L93 Difference]: Finished difference Result 3646 states and 5978 transitions. [2023-11-21 22:13:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 22:13:31,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 5 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 128 [2023-11-21 22:13:31,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:13:31,209 INFO L225 Difference]: With dead ends: 3646 [2023-11-21 22:13:31,209 INFO L226 Difference]: Without dead ends: 2285 [2023-11-21 22:13:31,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2023-11-21 22:13:31,226 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 1013 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 2485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:13:31,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 1007 Invalid, 2485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-21 22:13:31,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2023-11-21 22:13:31,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 1965. [2023-11-21 22:13:31,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1390 states have (on average 1.5575539568345325) internal successors, (2165), 1443 states have internal predecessors, (2165), 472 states have call successors, (472), 93 states have call predecessors, (472), 102 states have return successors, (568), 450 states have call predecessors, (568), 466 states have call successors, (568) [2023-11-21 22:13:31,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3205 transitions. [2023-11-21 22:13:31,916 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3205 transitions. Word has length 128 [2023-11-21 22:13:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:13:31,917 INFO L495 AbstractCegarLoop]: Abstraction has 1965 states and 3205 transitions. [2023-11-21 22:13:31,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 5 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-21 22:13:31,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3205 transitions. [2023-11-21 22:13:31,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-21 22:13:31,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:13:31,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-11-21 22:13:31,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:32,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27558c22-e1df-41c8-8dcc-5fe951260a71/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:13:32,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:13:32,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:32,150 INFO L85 PathProgramCache]: Analyzing trace with hash 828889193, now seen corresponding path program 1 times [2023-11-21 22:13:32,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:32,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527367818] [2023-11-21 22:13:32,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:32,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:13:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:32,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:13:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:32,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:13:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:32,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:13:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:32,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:13:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:32,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 22:13:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:33,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-21 22:13:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:33,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:13:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:13:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:33,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:13:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:33,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:13:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:33,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-21 22:13:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:33,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-21 22:13:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:33,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-21 22:13:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:13:33,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:33,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527367818] [2023-11-21 22:13:33,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527367818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:33,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:33,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-21 22:13:33,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500952488] [2023-11-21 22:13:33,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:33,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:13:33,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:13:33,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:13:33,615 INFO L87 Difference]: Start difference. First operand 1965 states and 3205 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14)