./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product31.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_17f752e6-6946-42a8-8ca5-e8af460425c1/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/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_17f752e6-6946-42a8-8ca5-e8af460425c1/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/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_17f752e6-6946-42a8-8ca5-e8af460425c1/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 04ae9a4eaad9b026cab167b9d875c53fcb305c3c3f2af8aa4a0b048c8b5ef4cb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:09:42,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:09:42,930 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:09:42,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:09:42,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:09:42,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:09:42,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:09:42,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:09:42,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:09:42,972 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:09:42,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:09:42,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:09:42,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:09:42,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:09:42,975 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:09:42,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:09:42,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:09:42,977 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:09:42,978 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:09:42,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:09:42,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:09:42,980 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:09:42,980 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:09:42,981 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:09:42,989 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:09:42,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:09:42,990 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:09:42,992 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:09:42,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:09:42,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:09:42,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:09:42,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:09:42,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:09:42,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:09:42,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:09:42,996 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:09:42,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:09:42,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:09:42,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:09:42,997 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:09:42,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:09:42,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:09:42,998 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_17f752e6-6946-42a8-8ca5-e8af460425c1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04ae9a4eaad9b026cab167b9d875c53fcb305c3c3f2af8aa4a0b048c8b5ef4cb [2023-11-21 22:09:43,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:09:43,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:09:43,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:09:43,438 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:09:43,439 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:09:43,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c [2023-11-21 22:09:46,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:09:46,994 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:09:46,996 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c [2023-11-21 22:09:47,022 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/bin/uautomizer-verify-bycVGegfSx/data/9255145ab/ab13bd7c5c754b7fb6177ff4f020930d/FLAG79e505f98 [2023-11-21 22:09:47,036 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/bin/uautomizer-verify-bycVGegfSx/data/9255145ab/ab13bd7c5c754b7fb6177ff4f020930d [2023-11-21 22:09:47,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:09:47,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:09:47,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:09:47,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:09:47,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:09:47,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:09:47" (1/1) ... [2023-11-21 22:09:47,053 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c721265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47, skipping insertion in model container [2023-11-21 22:09:47,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:09:47" (1/1) ... [2023-11-21 22:09:47,142 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:09:47,415 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_17f752e6-6946-42a8-8ca5-e8af460425c1/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c[11232,11245] [2023-11-21 22:09:47,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:09:47,790 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:09:47,806 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2023-11-21 22:09:47,808 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [414] [2023-11-21 22:09:47,808 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [423] [2023-11-21 22:09:47,809 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2054] [2023-11-21 22:09:47,809 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2148] [2023-11-21 22:09:47,809 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2164] [2023-11-21 22:09:47,809 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [2282] [2023-11-21 22:09:47,810 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2463] [2023-11-21 22:09:47,810 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2816] [2023-11-21 22:09:47,810 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3481] [2023-11-21 22:09:47,846 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_17f752e6-6946-42a8-8ca5-e8af460425c1/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c[11232,11245] [2023-11-21 22:09:47,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:09:47,982 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:09:47,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47 WrapperNode [2023-11-21 22:09:47,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:09:47,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:09:47,985 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:09:47,985 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:09:47,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47" (1/1) ... [2023-11-21 22:09:48,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47" (1/1) ... [2023-11-21 22:09:48,087 INFO L138 Inliner]: procedures = 97, calls = 350, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 954 [2023-11-21 22:09:48,088 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:09:48,089 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:09:48,089 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:09:48,089 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:09:48,101 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47" (1/1) ... [2023-11-21 22:09:48,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47" (1/1) ... [2023-11-21 22:09:48,110 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47" (1/1) ... [2023-11-21 22:09:48,158 INFO L187 HeapSplitter]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4] [2023-11-21 22:09:48,158 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47" (1/1) ... [2023-11-21 22:09:48,159 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47" (1/1) ... [2023-11-21 22:09:48,182 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47" (1/1) ... [2023-11-21 22:09:48,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47" (1/1) ... [2023-11-21 22:09:48,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47" (1/1) ... [2023-11-21 22:09:48,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47" (1/1) ... [2023-11-21 22:09:48,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:09:48,229 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:09:48,230 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:09:48,230 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:09:48,231 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47" (1/1) ... [2023-11-21 22:09:48,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:09:48,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:09:48,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:09:48,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:09:48,344 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-21 22:09:48,344 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-21 22:09:48,344 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-21 22:09:48,345 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-21 22:09:48,345 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-21 22:09:48,345 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-21 22:09:48,345 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-11-21 22:09:48,345 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-11-21 22:09:48,346 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 22:09:48,346 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 22:09:48,347 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-21 22:09:48,347 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-21 22:09:48,347 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-21 22:09:48,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-21 22:09:48,347 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-21 22:09:48,347 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-21 22:09:48,348 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-21 22:09:48,348 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-21 22:09:48,348 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-21 22:09:48,348 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-21 22:09:48,349 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-21 22:09:48,349 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-21 22:09:48,349 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-21 22:09:48,350 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-21 22:09:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:09:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-21 22:09:48,352 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-21 22:09:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-21 22:09:48,353 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-21 22:09:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-21 22:09:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-21 22:09:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-21 22:09:48,358 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-21 22:09:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 22:09:48,358 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 22:09:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-21 22:09:48,358 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-21 22:09:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-21 22:09:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-21 22:09:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-21 22:09:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-21 22:09:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-21 22:09:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-21 22:09:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-21 22:09:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-21 22:09:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-21 22:09:48,360 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-21 22:09:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-21 22:09:48,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-21 22:09:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-21 22:09:48,361 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-21 22:09:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:09:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:09:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:09:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:09:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:09:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 22:09:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 22:09:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-21 22:09:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-21 22:09:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-21 22:09:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-21 22:09:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-21 22:09:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-21 22:09:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-21 22:09:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-21 22:09:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-21 22:09:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-21 22:09:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-21 22:09:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-21 22:09:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-21 22:09:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-21 22:09:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-21 22:09:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:09:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:09:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-21 22:09:48,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-21 22:09:48,621 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:09:48,625 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:09:49,998 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:09:51,304 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:09:51,304 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:09:51,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:09:51 BoogieIcfgContainer [2023-11-21 22:09:51,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:09:51,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:09:51,310 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:09:51,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:09:51,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:09:47" (1/3) ... [2023-11-21 22:09:51,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d26d707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:09:51, skipping insertion in model container [2023-11-21 22:09:51,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:47" (2/3) ... [2023-11-21 22:09:51,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d26d707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:09:51, skipping insertion in model container [2023-11-21 22:09:51,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:09:51" (3/3) ... [2023-11-21 22:09:51,320 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product31.cil.c [2023-11-21 22:09:51,341 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:09:51,342 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:09:51,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:09:51,437 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;@40223ca9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:09:51,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:09:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 404 states, 270 states have (on average 1.5703703703703704) internal successors, (424), 291 states have internal predecessors, (424), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) [2023-11-21 22:09:51,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-21 22:09:51,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:09:51,488 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-21 22:09:51,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:09:51,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:51,501 INFO L85 PathProgramCache]: Analyzing trace with hash 300647934, now seen corresponding path program 1 times [2023-11-21 22:09:51,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:51,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104755202] [2023-11-21 22:09:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:51,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:52,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:09:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:09:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:52,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:09:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:52,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:52,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:09:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:53,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 22:09:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:53,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:53,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:53,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:09:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:53,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 22:09:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:53,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:53,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:53,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:09:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:53,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:09:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:53,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-21 22:09:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:53,309 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:09:53,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:53,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104755202] [2023-11-21 22:09:53,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104755202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:53,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:53,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:09:53,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588594979] [2023-11-21 22:09:53,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:53,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:09:53,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:53,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:09:53,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:09:53,385 INFO L87 Difference]: Start difference. First operand has 404 states, 270 states have (on average 1.5703703703703704) internal successors, (424), 291 states have internal predecessors, (424), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-21 22:09:57,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:09:57,680 INFO L93 Difference]: Finished difference Result 534 states and 853 transitions. [2023-11-21 22:09:57,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:09:57,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 88 [2023-11-21 22:09:57,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:09:57,714 INFO L225 Difference]: With dead ends: 534 [2023-11-21 22:09:57,714 INFO L226 Difference]: Without dead ends: 512 [2023-11-21 22:09:57,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:09:57,722 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 570 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:09:57,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 582 Invalid, 978 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [170 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-21 22:09:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-11-21 22:09:58,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 400. [2023-11-21 22:09:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 268 states have (on average 1.5597014925373134) internal successors, (418), 287 states have internal predecessors, (418), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-21 22:09:58,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 623 transitions. [2023-11-21 22:09:58,086 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 623 transitions. Word has length 88 [2023-11-21 22:09:58,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:09:58,087 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 623 transitions. [2023-11-21 22:09:58,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-21 22:09:58,088 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 623 transitions. [2023-11-21 22:09:58,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-21 22:09:58,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:09:58,096 INFO L195 NwaCegarLoop]: trace histogram [3, 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 22:09:58,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:09:58,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:09:58,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:58,098 INFO L85 PathProgramCache]: Analyzing trace with hash 427133392, now seen corresponding path program 1 times [2023-11-21 22:09:58,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:58,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477990083] [2023-11-21 22:09:58,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:58,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:58,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:09:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:58,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:58,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:09:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:58,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:09:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:59,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:59,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:09:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:59,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 22:09:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:59,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:59,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:59,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:59,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:09:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:59,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 22:09:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:59,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:59,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:09:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:59,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:09:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-21 22:09:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:09:59,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:59,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477990083] [2023-11-21 22:09:59,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477990083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:59,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:59,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 22:09:59,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829171880] [2023-11-21 22:09:59,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:59,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:09:59,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:59,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:09:59,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:09:59,823 INFO L87 Difference]: Start difference. First operand 400 states and 623 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-21 22:10:09,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:10:09,501 INFO L93 Difference]: Finished difference Result 1293 states and 2062 transitions. [2023-11-21 22:10:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 22:10:09,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2023-11-21 22:10:09,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:10:09,512 INFO L225 Difference]: With dead ends: 1293 [2023-11-21 22:10:09,512 INFO L226 Difference]: Without dead ends: 916 [2023-11-21 22:10:09,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-11-21 22:10:09,521 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1982 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 2894 mSolverCounterSat, 907 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 3801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 907 IncrementalHoareTripleChecker+Valid, 2894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:10:09,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2055 Valid, 1695 Invalid, 3801 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [907 Valid, 2894 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-21 22:10:09,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2023-11-21 22:10:09,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 791. [2023-11-21 22:10:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 540 states have (on average 1.5740740740740742) internal successors, (850), 573 states have internal predecessors, (850), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2023-11-21 22:10:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1253 transitions. [2023-11-21 22:10:09,840 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1253 transitions. Word has length 89 [2023-11-21 22:10:09,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:10:09,841 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1253 transitions. [2023-11-21 22:10:09,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-21 22:10:09,842 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1253 transitions. [2023-11-21 22:10:09,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-21 22:10:09,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:10:09,846 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1] [2023-11-21 22:10:09,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:10:09,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:10:09,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:10:09,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1081677863, now seen corresponding path program 1 times [2023-11-21 22:10:09,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:10:09,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629014971] [2023-11-21 22:10:09,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:09,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:10:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:10,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:10:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:10,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:10,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:10:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:10,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:10:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:10,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:10,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:10:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 22:10:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:11,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:11,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:11,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:11,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:10:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:11,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 22:10:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:11,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:11,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:11,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:10:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:11,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:10:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:11,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:10:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:11,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-21 22:10:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:10:11,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:10:11,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629014971] [2023-11-21 22:10:11,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629014971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:10:11,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:10:11,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:10:11,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843195861] [2023-11-21 22:10:11,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:10:11,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:10:11,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:10:11,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:10:11,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:10:11,363 INFO L87 Difference]: Start difference. First operand 791 states and 1253 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-21 22:10:17,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:10:17,252 INFO L93 Difference]: Finished difference Result 1000 states and 1605 transitions. [2023-11-21 22:10:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:10:17,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2023-11-21 22:10:17,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:10:17,264 INFO L225 Difference]: With dead ends: 1000 [2023-11-21 22:10:17,264 INFO L226 Difference]: Without dead ends: 985 [2023-11-21 22:10:17,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:10:17,272 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 1564 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 754 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:10:17,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1573 Valid, 962 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-21 22:10:17,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2023-11-21 22:10:17,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 795. [2023-11-21 22:10:17,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 544 states have (on average 1.5698529411764706) internal successors, (854), 577 states have internal predecessors, (854), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2023-11-21 22:10:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1257 transitions. [2023-11-21 22:10:17,505 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1257 transitions. Word has length 93 [2023-11-21 22:10:17,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:10:17,506 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1257 transitions. [2023-11-21 22:10:17,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-21 22:10:17,507 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1257 transitions. [2023-11-21 22:10:17,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-21 22:10:17,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:10:17,510 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:10:17,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:10:17,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:10:17,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:10:17,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1525550170, now seen corresponding path program 1 times [2023-11-21 22:10:17,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:10:17,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579845113] [2023-11-21 22:10:17,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:17,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:10:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:10:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:10:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:10:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:10:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 22:10:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:10:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 22:10:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:10:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:10:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:10:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-21 22:10:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-21 22:10:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:10:18,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:10:18,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579845113] [2023-11-21 22:10:18,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579845113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:10:18,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:10:18,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:10:18,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412544629] [2023-11-21 22:10:18,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:10:18,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:10:18,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:10:18,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:10:18,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:10:18,670 INFO L87 Difference]: Start difference. First operand 795 states and 1257 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-21 22:10:23,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:10:23,983 INFO L93 Difference]: Finished difference Result 925 states and 1469 transitions. [2023-11-21 22:10:23,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-21 22:10:23,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 98 [2023-11-21 22:10:23,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:10:23,993 INFO L225 Difference]: With dead ends: 925 [2023-11-21 22:10:23,993 INFO L226 Difference]: Without dead ends: 910 [2023-11-21 22:10:23,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:10:23,996 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 1151 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 2942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:10:23,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 1519 Invalid, 2942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 2453 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-21 22:10:23,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-11-21 22:10:24,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 795. [2023-11-21 22:10:24,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 544 states have (on average 1.5661764705882353) internal successors, (852), 577 states have internal predecessors, (852), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2023-11-21 22:10:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1255 transitions. [2023-11-21 22:10:24,251 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1255 transitions. Word has length 98 [2023-11-21 22:10:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:10:24,252 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1255 transitions. [2023-11-21 22:10:24,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-21 22:10:24,253 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1255 transitions. [2023-11-21 22:10:24,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-21 22:10:24,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:10:24,256 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:10:24,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:10:24,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:10:24,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:10:24,258 INFO L85 PathProgramCache]: Analyzing trace with hash -541549311, now seen corresponding path program 1 times [2023-11-21 22:10:24,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:10:24,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22715059] [2023-11-21 22:10:24,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:24,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:10:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:10:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:28,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:28,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:10:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:28,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:10:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:28,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:28,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:10:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:29,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 22:10:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:30,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:30,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:30,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:30,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:10:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 22:10:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:30,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:30,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:30,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:10:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:30,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:10:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:30,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:10:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:30,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-21 22:10:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:30,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-21 22:10:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:30,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-21 22:10:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 22:10:30,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:10:30,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22715059] [2023-11-21 22:10:30,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22715059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:10:30,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149885613] [2023-11-21 22:10:30,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:30,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:10:30,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:10:30,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:10:30,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f752e6-6946-42a8-8ca5-e8af460425c1/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:10:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:31,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-21 22:10:31,324 INFO L285 TraceCheckSpWp]: Computing forward predicates...