./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product26.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_80bf0361-ce94-4220-b469-c2f26a82bf99/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf0361-ce94-4220-b469-c2f26a82bf99/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_80bf0361-ce94-4220-b469-c2f26a82bf99/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf0361-ce94-4220-b469-c2f26a82bf99/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf0361-ce94-4220-b469-c2f26a82bf99/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_80bf0361-ce94-4220-b469-c2f26a82bf99/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 c39b0b488ad07619ca8d4ed9273747459006984c072c0894ad54004ae965569d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:18:33,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:18:33,196 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf0361-ce94-4220-b469-c2f26a82bf99/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:18:33,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:18:33,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:18:33,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:18:33,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:18:33,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:18:33,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:18:33,235 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:18:33,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:18:33,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:18:33,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:18:33,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:18:33,239 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:18:33,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:18:33,241 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:18:33,241 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:18:33,242 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:18:33,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:18:33,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:18:33,245 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:18:33,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:18:33,246 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:18:33,247 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:18:33,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:18:33,248 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:18:33,271 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:18:33,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:18:33,272 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:18:33,274 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:18:33,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:18:33,274 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:18:33,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:18:33,275 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:18:33,275 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:18:33,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:18:33,276 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:18:33,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:18:33,276 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:18:33,277 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:18:33,277 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:18:33,277 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_80bf0361-ce94-4220-b469-c2f26a82bf99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf0361-ce94-4220-b469-c2f26a82bf99/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c39b0b488ad07619ca8d4ed9273747459006984c072c0894ad54004ae965569d [2023-11-21 22:18:33,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:18:33,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:18:33,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:18:33,600 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:18:33,600 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:18:33,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf0361-ce94-4220-b469-c2f26a82bf99/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c [2023-11-21 22:18:37,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:18:37,478 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:18:37,478 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf0361-ce94-4220-b469-c2f26a82bf99/sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c [2023-11-21 22:18:37,524 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf0361-ce94-4220-b469-c2f26a82bf99/bin/uautomizer-verify-bycVGegfSx/data/837b6f398/e12fee0f929b4b3f8ebc5a38c86d9a0b/FLAG19784e8a1 [2023-11-21 22:18:37,543 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf0361-ce94-4220-b469-c2f26a82bf99/bin/uautomizer-verify-bycVGegfSx/data/837b6f398/e12fee0f929b4b3f8ebc5a38c86d9a0b [2023-11-21 22:18:37,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:18:37,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:18:37,553 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:18:37,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:18:37,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:18:37,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:18:37" (1/1) ... [2023-11-21 22:18:37,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1557fe28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:37, skipping insertion in model container [2023-11-21 22:18:37,563 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:18:37" (1/1) ... [2023-11-21 22:18:37,662 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:18:38,315 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_80bf0361-ce94-4220-b469-c2f26a82bf99/sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c[70298,70311] [2023-11-21 22:18:38,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:18:38,350 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:18:38,362 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-11-21 22:18:38,363 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [412] [2023-11-21 22:18:38,364 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1940] [2023-11-21 22:18:38,364 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2058] [2023-11-21 22:18:38,364 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2070] [2023-11-21 22:18:38,365 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2436] [2023-11-21 22:18:38,365 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2471] [2023-11-21 22:18:38,365 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [3132] [2023-11-21 22:18:38,366 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3314] [2023-11-21 22:18:38,366 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3323] [2023-11-21 22:18:38,540 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_80bf0361-ce94-4220-b469-c2f26a82bf99/sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c[70298,70311] [2023-11-21 22:18:38,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:18:38,582 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:18:38,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:38 WrapperNode [2023-11-21 22:18:38,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:18:38,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:18:38,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:18:38,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:18:38,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:38" (1/1) ... [2023-11-21 22:18:38,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:38" (1/1) ... [2023-11-21 22:18:38,715 INFO L138 Inliner]: procedures = 93, calls = 340, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 860 [2023-11-21 22:18:38,715 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:18:38,716 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:18:38,716 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:18:38,716 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:18:38,727 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:38" (1/1) ... [2023-11-21 22:18:38,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:38" (1/1) ... [2023-11-21 22:18:38,734 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:38" (1/1) ... [2023-11-21 22:18:38,761 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 22:18:38,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:38" (1/1) ... [2023-11-21 22:18:38,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:38" (1/1) ... [2023-11-21 22:18:38,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:38" (1/1) ... [2023-11-21 22:18:38,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:38" (1/1) ... [2023-11-21 22:18:38,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:38" (1/1) ... [2023-11-21 22:18:38,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:38" (1/1) ... [2023-11-21 22:18:38,940 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:18:38,942 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:18:38,942 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:18:38,942 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:18:38,943 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:38" (1/1) ... [2023-11-21 22:18:38,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:18:38,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf0361-ce94-4220-b469-c2f26a82bf99/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:38,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf0361-ce94-4220-b469-c2f26a82bf99/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:18:39,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf0361-ce94-4220-b469-c2f26a82bf99/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:18:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:18:39,045 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-21 22:18:39,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-21 22:18:39,045 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-21 22:18:39,045 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-21 22:18:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-21 22:18:39,046 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-21 22:18:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-21 22:18:39,047 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-21 22:18:39,048 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-21 22:18:39,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-21 22:18:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 22:18:39,049 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 22:18:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 22:18:39,050 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 22:18:39,051 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-21 22:18:39,051 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-21 22:18:39,051 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-21 22:18:39,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-21 22:18:39,054 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-21 22:18:39,055 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-21 22:18:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-21 22:18:39,055 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-21 22:18:39,055 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-21 22:18:39,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-21 22:18:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-21 22:18:39,056 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-21 22:18:39,056 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-21 22:18:39,056 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-21 22:18:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2023-11-21 22:18:39,057 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2023-11-21 22:18:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-21 22:18:39,057 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-21 22:18:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-21 22:18:39,058 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-21 22:18:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-21 22:18:39,058 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-21 22:18:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:18:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:18:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:18:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:18:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:18:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 22:18:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 22:18:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-21 22:18:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-21 22:18:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-21 22:18:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-21 22:18:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-21 22:18:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-21 22:18:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-21 22:18:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-21 22:18:39,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-21 22:18:39,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-21 22:18:39,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-21 22:18:39,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-21 22:18:39,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-21 22:18:39,065 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-21 22:18:39,065 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-21 22:18:39,065 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-21 22:18:39,066 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-21 22:18:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-21 22:18:39,067 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-21 22:18:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:18:39,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:18:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-21 22:18:39,068 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-21 22:18:39,347 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:18:39,350 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:18:40,531 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:18:41,773 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:18:41,773 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:18:41,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:18:41 BoogieIcfgContainer [2023-11-21 22:18:41,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:18:41,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:18:41,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:18:41,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:18:41,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:18:37" (1/3) ... [2023-11-21 22:18:41,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f490ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:18:41, skipping insertion in model container [2023-11-21 22:18:41,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:38" (2/3) ... [2023-11-21 22:18:41,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f490ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:18:41, skipping insertion in model container [2023-11-21 22:18:41,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:18:41" (3/3) ... [2023-11-21 22:18:41,785 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product26.cil.c [2023-11-21 22:18:41,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:18:41,806 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:18:41,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:18:41,876 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;@274dfe60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:18:41,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:18:41,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 356 states, 241 states have (on average 1.6182572614107884) internal successors, (390), 264 states have internal predecessors, (390), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-21 22:18:41,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-21 22:18:41,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:41,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:41,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:41,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:41,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1415829101, now seen corresponding path program 1 times [2023-11-21 22:18:41,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:41,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372231125] [2023-11-21 22:18:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:41,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:42,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:18:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:42,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:42,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:18:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:43,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:18:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:43,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:43,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:43,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372231125] [2023-11-21 22:18:43,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372231125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:43,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:43,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:18:43,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756790120] [2023-11-21 22:18:43,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:43,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:18:43,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:43,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:18:43,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:18:43,393 INFO L87 Difference]: Start difference. First operand has 356 states, 241 states have (on average 1.6182572614107884) internal successors, (390), 264 states have internal predecessors, (390), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-21 22:18:47,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:18:47,313 INFO L93 Difference]: Finished difference Result 454 states and 736 transitions. [2023-11-21 22:18:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:18:47,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2023-11-21 22:18:47,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:18:47,335 INFO L225 Difference]: With dead ends: 454 [2023-11-21 22:18:47,335 INFO L226 Difference]: Without dead ends: 432 [2023-11-21 22:18:47,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:18:47,343 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 371 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:18:47,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 388 Invalid, 685 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-21 22:18:47,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-11-21 22:18:47,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 352. [2023-11-21 22:18:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 239 states have (on average 1.606694560669456) internal successors, (384), 260 states have internal predecessors, (384), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-21 22:18:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 561 transitions. [2023-11-21 22:18:47,585 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 561 transitions. Word has length 39 [2023-11-21 22:18:47,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:18:47,586 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 561 transitions. [2023-11-21 22:18:47,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-21 22:18:47,587 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 561 transitions. [2023-11-21 22:18:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-21 22:18:47,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:47,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:47,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:18:47,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:47,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:47,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1611367650, now seen corresponding path program 1 times [2023-11-21 22:18:47,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:47,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436361825] [2023-11-21 22:18:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:47,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:18:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:48,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:48,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:18:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:48,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:18:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:48,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:48,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:48,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436361825] [2023-11-21 22:18:48,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436361825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:48,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:48,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:18:48,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415185763] [2023-11-21 22:18:48,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:48,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:18:48,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:48,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:18:48,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:18:48,994 INFO L87 Difference]: Start difference. First operand 352 states and 561 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:18:56,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:18:56,488 INFO L93 Difference]: Finished difference Result 1265 states and 2071 transitions. [2023-11-21 22:18:56,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:18:56,489 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2023-11-21 22:18:56,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:18:56,506 INFO L225 Difference]: With dead ends: 1265 [2023-11-21 22:18:56,506 INFO L226 Difference]: Without dead ends: 929 [2023-11-21 22:18:56,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:18:56,516 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 2049 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:18:56,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2096 Valid, 1128 Invalid, 2759 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [789 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-21 22:18:56,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2023-11-21 22:18:56,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 733. [2023-11-21 22:18:56,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 521 states have (on average 1.6314779270633397) internal successors, (850), 551 states have internal predecessors, (850), 174 states have call successors, (174), 36 states have call predecessors, (174), 37 states have return successors, (176), 158 states have call predecessors, (176), 169 states have call successors, (176) [2023-11-21 22:18:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1200 transitions. [2023-11-21 22:18:56,778 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1200 transitions. Word has length 40 [2023-11-21 22:18:56,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:18:56,779 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 1200 transitions. [2023-11-21 22:18:56,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:18:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1200 transitions. [2023-11-21 22:18:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-21 22:18:56,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:56,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:56,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:18:56,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:56,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:56,785 INFO L85 PathProgramCache]: Analyzing trace with hash -72539657, now seen corresponding path program 1 times [2023-11-21 22:18:56,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:56,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579098217] [2023-11-21 22:18:56,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:56,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:57,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:18:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:57,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:57,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:18:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:18:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:18:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:18:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:18:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:18:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:58,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:58,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579098217] [2023-11-21 22:18:58,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579098217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:58,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:58,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 22:18:58,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188912992] [2023-11-21 22:18:58,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:58,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:18:58,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:58,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:18:58,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:18:58,630 INFO L87 Difference]: Start difference. First operand 733 states and 1200 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-21 22:19:07,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:07,137 INFO L93 Difference]: Finished difference Result 1871 states and 3104 transitions. [2023-11-21 22:19:07,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 22:19:07,138 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 61 [2023-11-21 22:19:07,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:07,148 INFO L225 Difference]: With dead ends: 1871 [2023-11-21 22:19:07,148 INFO L226 Difference]: Without dead ends: 1155 [2023-11-21 22:19:07,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:19:07,155 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 996 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 2811 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 3311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 2811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:07,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 1678 Invalid, 3311 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [500 Valid, 2811 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-21 22:19:07,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2023-11-21 22:19:07,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 916. [2023-11-21 22:19:07,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 652 states have (on average 1.607361963190184) internal successors, (1048), 684 states have internal predecessors, (1048), 211 states have call successors, (211), 47 states have call predecessors, (211), 52 states have return successors, (238), 195 states have call predecessors, (238), 206 states have call successors, (238) [2023-11-21 22:19:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1497 transitions. [2023-11-21 22:19:07,490 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1497 transitions. Word has length 61 [2023-11-21 22:19:07,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:07,492 INFO L495 AbstractCegarLoop]: Abstraction has 916 states and 1497 transitions. [2023-11-21 22:19:07,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-21 22:19:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1497 transitions. [2023-11-21 22:19:07,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-21 22:19:07,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:07,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:07,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:19:07,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:07,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:07,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1047366241, now seen corresponding path program 1 times [2023-11-21 22:19:07,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:07,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811751554] [2023-11-21 22:19:07,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:07,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:07,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:19:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:08,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:08,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:19:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:08,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:19:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:08,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:08,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:19:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:08,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:19:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:08,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:19:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:19:08,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:08,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811751554] [2023-11-21 22:19:08,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811751554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:08,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:19:08,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:19:08,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575810094] [2023-11-21 22:19:08,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:08,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:19:08,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:08,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:19:08,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:19:08,832 INFO L87 Difference]: Start difference. First operand 916 states and 1497 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-21 22:19:18,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:18,495 INFO L93 Difference]: Finished difference Result 2675 states and 4425 transitions. [2023-11-21 22:19:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 22:19:18,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 65 [2023-11-21 22:19:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:18,513 INFO L225 Difference]: With dead ends: 2675 [2023-11-21 22:19:18,514 INFO L226 Difference]: Without dead ends: 1777 [2023-11-21 22:19:18,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2023-11-21 22:19:18,523 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 2800 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 1561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2834 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1561 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:18,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2834 Valid, 927 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1561 Valid, 1562 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-21 22:19:18,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2023-11-21 22:19:19,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1542. [2023-11-21 22:19:19,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1093 states have (on average 1.5827996340347668) internal successors, (1730), 1152 states have internal predecessors, (1730), 361 states have call successors, (361), 80 states have call predecessors, (361), 87 states have return successors, (412), 331 states have call predecessors, (412), 356 states have call successors, (412) [2023-11-21 22:19:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2503 transitions. [2023-11-21 22:19:19,102 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2503 transitions. Word has length 65 [2023-11-21 22:19:19,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:19,103 INFO L495 AbstractCegarLoop]: Abstraction has 1542 states and 2503 transitions. [2023-11-21 22:19:19,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-21 22:19:19,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2503 transitions. [2023-11-21 22:19:19,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-21 22:19:19,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:19,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:19,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:19:19,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:19,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:19,108 INFO L85 PathProgramCache]: Analyzing trace with hash -266576217, now seen corresponding path program 1 times [2023-11-21 22:19:19,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:19,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858766813] [2023-11-21 22:19:19,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:19,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:19:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:19,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:19:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:20,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:19:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:20,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:20,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:19:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:20,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:20,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:19:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:19:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:19:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:19:20,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:20,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858766813] [2023-11-21 22:19:20,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858766813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:20,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:19:20,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:19:20,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701497644] [2023-11-21 22:19:20,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:20,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:19:20,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:20,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:19:20,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:19:20,574 INFO L87 Difference]: Start difference. First operand 1542 states and 2503 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11)