./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:07:46,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:07:46,154 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:07:46,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:07:46,168 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:07:46,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:07:46,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:07:46,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:07:46,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:07:46,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:07:46,219 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:07:46,220 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:07:46,221 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:07:46,223 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:07:46,223 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:07:46,224 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:07:46,224 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:07:46,224 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:07:46,225 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:07:46,226 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:07:46,226 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:07:46,227 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:07:46,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:07:46,229 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:07:46,229 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:07:46,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:07:46,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:07:46,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:07:46,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:07:46,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:07:46,233 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:07:46,233 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:07:46,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:07:46,234 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:07:46,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:07:46,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:07:46,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:07:46,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:07:46,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:07:46,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:07:46,236 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:07:46,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:07:46,236 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:07:46,237 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:07:46,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:07:46,238 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e [2023-11-12 00:07:46,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:07:46,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:07:46,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:07:46,558 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:07:46,560 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:07:46,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2023-11-12 00:07:49,851 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:07:50,232 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:07:50,233 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2023-11-12 00:07:50,265 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX/data/ea81bbc84/1a97f5a68d6746f4ad61ea5f0abbdf2a/FLAG2004ed45a [2023-11-12 00:07:50,282 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX/data/ea81bbc84/1a97f5a68d6746f4ad61ea5f0abbdf2a [2023-11-12 00:07:50,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:07:50,292 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:07:50,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:07:50,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:07:50,302 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:07:50,303 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:07:50" (1/1) ... [2023-11-12 00:07:50,304 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f5f931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:50, skipping insertion in model container [2023-11-12 00:07:50,304 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:07:50" (1/1) ... [2023-11-12 00:07:50,371 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:07:50,637 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_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2023-11-12 00:07:50,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:07:50,980 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:07:50,992 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2023-11-12 00:07:50,993 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [414] [2023-11-12 00:07:50,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [452] [2023-11-12 00:07:50,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [461] [2023-11-12 00:07:50,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [626] [2023-11-12 00:07:50,996 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [640] [2023-11-12 00:07:50,996 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [739] [2023-11-12 00:07:50,996 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [859] [2023-11-12 00:07:50,997 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2444] [2023-11-12 00:07:50,997 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3105] [2023-11-12 00:07:51,051 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_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2023-11-12 00:07:51,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:07:51,241 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:07:51,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:51 WrapperNode [2023-11-12 00:07:51,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:07:51,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:07:51,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:07:51,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:07:51,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:51" (1/1) ... [2023-11-12 00:07:51,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:51" (1/1) ... [2023-11-12 00:07:51,360 INFO L138 Inliner]: procedures = 95, calls = 344, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 872 [2023-11-12 00:07:51,361 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:07:51,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:07:51,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:07:51,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:07:51,373 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:51" (1/1) ... [2023-11-12 00:07:51,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:51" (1/1) ... [2023-11-12 00:07:51,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:51" (1/1) ... [2023-11-12 00:07:51,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:51" (1/1) ... [2023-11-12 00:07:51,410 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:51" (1/1) ... [2023-11-12 00:07:51,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:51" (1/1) ... [2023-11-12 00:07:51,433 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:51" (1/1) ... [2023-11-12 00:07:51,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:51" (1/1) ... [2023-11-12 00:07:51,450 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:07:51,451 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:07:51,452 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:07:51,452 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:07:51,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:51" (1/1) ... [2023-11-12 00:07:51,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:07:51,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:07:51,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:07:51,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a3bb2f-b4f4-4c06-b4ad-210778da8a3b/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:07:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:07:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-12 00:07:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-12 00:07:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-12 00:07:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-12 00:07:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-12 00:07:51,588 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-12 00:07:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-12 00:07:51,589 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-12 00:07:51,589 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-12 00:07:51,589 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-12 00:07:51,590 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-11-12 00:07:51,590 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-11-12 00:07:51,591 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-12 00:07:51,592 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-12 00:07:51,592 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-12 00:07:51,592 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-12 00:07:51,593 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-12 00:07:51,595 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-12 00:07:51,595 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-12 00:07:51,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-12 00:07:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-12 00:07:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-12 00:07:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-12 00:07:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-12 00:07:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-12 00:07:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-12 00:07:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-12 00:07:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-12 00:07:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-12 00:07:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-12 00:07:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-12 00:07:51,598 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-12 00:07:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-12 00:07:51,598 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-12 00:07:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-12 00:07:51,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-12 00:07:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-12 00:07:51,599 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-12 00:07:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-11-12 00:07:51,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-11-12 00:07:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:07:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-12 00:07:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-12 00:07:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-12 00:07:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-12 00:07:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-12 00:07:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-12 00:07:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-12 00:07:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-12 00:07:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-11-12 00:07:51,602 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-11-12 00:07:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:07:51,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:07:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-12 00:07:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-12 00:07:51,815 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:07:51,817 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:07:53,230 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:07:54,244 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:07:54,244 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:07:54,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:07:54 BoogieIcfgContainer [2023-11-12 00:07:54,250 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:07:54,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:07:54,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:07:54,258 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:07:54,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:07:50" (1/3) ... [2023-11-12 00:07:54,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d314c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:07:54, skipping insertion in model container [2023-11-12 00:07:54,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:07:51" (2/3) ... [2023-11-12 00:07:54,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d314c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:07:54, skipping insertion in model container [2023-11-12 00:07:54,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:07:54" (3/3) ... [2023-11-12 00:07:54,263 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product30.cil.c [2023-11-12 00:07:54,283 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:07:54,284 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:07:54,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:07:54,375 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=FINITE_AUTOMATA, 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;@15cbf5a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:07:54,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:07:54,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 378 states, 254 states have (on average 1.5866141732283465) internal successors, (403), 277 states have internal predecessors, (403), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-12 00:07:54,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 00:07:54,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:07:54,399 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] [2023-11-12 00:07:54,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:07:54,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:07:54,405 INFO L85 PathProgramCache]: Analyzing trace with hash -554525065, now seen corresponding path program 1 times [2023-11-12 00:07:54,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:07:54,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301405650] [2023-11-12 00:07:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:07:54,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:07:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:07:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:07:54,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:07:54,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301405650] [2023-11-12 00:07:54,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301405650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:07:54,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:07:54,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:07:54,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755437897] [2023-11-12 00:07:54,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:07:54,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:07:54,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:07:54,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:07:54,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:07:54,971 INFO L87 Difference]: Start difference. First operand has 378 states, 254 states have (on average 1.5866141732283465) internal successors, (403), 277 states have internal predecessors, (403), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 00:07:55,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:07:55,233 INFO L93 Difference]: Finished difference Result 396 states and 622 transitions. [2023-11-12 00:07:55,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:07:55,237 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 43 [2023-11-12 00:07:55,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:07:55,260 INFO L225 Difference]: With dead ends: 396 [2023-11-12 00:07:55,261 INFO L226 Difference]: Without dead ends: 374 [2023-11-12 00:07:55,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:07:55,269 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:07:55,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 549 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:07:55,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-12 00:07:55,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2023-11-12 00:07:55,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 252 states have (on average 1.5753968253968254) internal successors, (397), 273 states have internal predecessors, (397), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-12 00:07:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 584 transitions. [2023-11-12 00:07:55,359 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 584 transitions. Word has length 43 [2023-11-12 00:07:55,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:07:55,361 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 584 transitions. [2023-11-12 00:07:55,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 00:07:55,361 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 584 transitions. [2023-11-12 00:07:55,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-12 00:07:55,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:07:55,377 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] [2023-11-12 00:07:55,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:07:55,378 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:07:55,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:07:55,381 INFO L85 PathProgramCache]: Analyzing trace with hash 335988881, now seen corresponding path program 1 times [2023-11-12 00:07:55,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:07:55,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892654927] [2023-11-12 00:07:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:07:55,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:07:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:07:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:07:55,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:07:55,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892654927] [2023-11-12 00:07:55,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892654927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:07:55,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:07:55,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:07:55,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758590768] [2023-11-12 00:07:55,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:07:55,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:07:55,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:07:55,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:07:55,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:07:55,999 INFO L87 Difference]: Start difference. First operand 374 states and 584 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 6 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-12 00:07:58,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:07:58,408 INFO L93 Difference]: Finished difference Result 1210 states and 1926 transitions. [2023-11-12 00:07:58,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:07:58,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 6 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 44 [2023-11-12 00:07:58,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:07:58,418 INFO L225 Difference]: With dead ends: 1210 [2023-11-12 00:07:58,419 INFO L226 Difference]: Without dead ends: 852 [2023-11-12 00:07:58,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:07:58,426 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1186 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:07:58,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 945 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-12 00:07:58,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2023-11-12 00:07:58,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 755. [2023-11-12 00:07:58,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 528 states have (on average 1.5909090909090908) internal successors, (840), 558 states have internal predecessors, (840), 179 states have call successors, (179), 46 states have call predecessors, (179), 47 states have return successors, (181), 163 states have call predecessors, (181), 174 states have call successors, (181) [2023-11-12 00:07:58,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1200 transitions. [2023-11-12 00:07:58,546 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1200 transitions. Word has length 44 [2023-11-12 00:07:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:07:58,546 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 1200 transitions. [2023-11-12 00:07:58,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 6 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-12 00:07:58,547 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1200 transitions. [2023-11-12 00:07:58,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-12 00:07:58,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:07:58,562 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:07:58,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:07:58,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:07:58,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:07:58,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1283308087, now seen corresponding path program 1 times [2023-11-12 00:07:58,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:07:58,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808279882] [2023-11-12 00:07:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:07:58,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:07:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:07:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:07:58,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:07:58,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808279882] [2023-11-12 00:07:58,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808279882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:07:59,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:07:59,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:07:59,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955140191] [2023-11-12 00:07:59,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:07:59,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:07:59,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:07:59,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:07:59,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:07:59,004 INFO L87 Difference]: Start difference. First operand 755 states and 1200 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-12 00:07:59,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:07:59,427 INFO L93 Difference]: Finished difference Result 1684 states and 2718 transitions. [2023-11-12 00:07:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:07:59,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 76 [2023-11-12 00:07:59,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:07:59,438 INFO L225 Difference]: With dead ends: 1684 [2023-11-12 00:07:59,438 INFO L226 Difference]: Without dead ends: 946 [2023-11-12 00:07:59,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:07:59,450 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 177 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:07:59,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2193 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:07:59,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2023-11-12 00:07:59,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 761. [2023-11-12 00:07:59,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 534 states have (on average 1.5842696629213484) internal successors, (846), 564 states have internal predecessors, (846), 179 states have call successors, (179), 46 states have call predecessors, (179), 47 states have return successors, (181), 163 states have call predecessors, (181), 174 states have call successors, (181) [2023-11-12 00:07:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1206 transitions. [2023-11-12 00:07:59,545 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1206 transitions. Word has length 76 [2023-11-12 00:07:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:07:59,547 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 1206 transitions. [2023-11-12 00:07:59,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-12 00:07:59,549 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1206 transitions. [2023-11-12 00:07:59,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-12 00:07:59,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:07:59,553 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:07:59,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:07:59,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:07:59,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:07:59,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1473176253, now seen corresponding path program 1 times [2023-11-12 00:07:59,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:07:59,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849509242] [2023-11-12 00:07:59,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:07:59,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:07:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:08:00,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:00,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849509242] [2023-11-12 00:08:00,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849509242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:00,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:00,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 00:08:00,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400389296] [2023-11-12 00:08:00,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:00,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 00:08:00,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:00,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 00:08:00,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:08:00,143 INFO L87 Difference]: Start difference. First operand 761 states and 1206 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-12 00:08:03,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:03,703 INFO L93 Difference]: Finished difference Result 2607 states and 4176 transitions. [2023-11-12 00:08:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-12 00:08:03,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 78 [2023-11-12 00:08:03,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:03,719 INFO L225 Difference]: With dead ends: 2607 [2023-11-12 00:08:03,720 INFO L226 Difference]: Without dead ends: 1863 [2023-11-12 00:08:03,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2023-11-12 00:08:03,727 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1717 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 3513 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1777 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 4067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 3513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:03,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1777 Valid, 2279 Invalid, 4067 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [554 Valid, 3513 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-12 00:08:03,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2023-11-12 00:08:03,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1780. [2023-11-12 00:08:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1279 states have (on average 1.5957779515246286) internal successors, (2041), 1331 states have internal predecessors, (2041), 388 states have call successors, (388), 97 states have call predecessors, (388), 112 states have return successors, (427), 375 states have call predecessors, (427), 383 states have call successors, (427) [2023-11-12 00:08:03,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2856 transitions. [2023-11-12 00:08:03,916 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2856 transitions. Word has length 78 [2023-11-12 00:08:03,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:03,917 INFO L495 AbstractCegarLoop]: Abstraction has 1780 states and 2856 transitions. [2023-11-12 00:08:03,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-12 00:08:03,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2856 transitions. [2023-11-12 00:08:03,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-12 00:08:03,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:03,923 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:03,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:08:03,924 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:03,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:03,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1456196714, now seen corresponding path program 1 times [2023-11-12 00:08:03,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:03,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762249592] [2023-11-12 00:08:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:03,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:08:04,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:04,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762249592] [2023-11-12 00:08:04,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762249592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:04,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:04,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:08:04,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478433414] [2023-11-12 00:08:04,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:04,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:08:04,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:04,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:08:04,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:08:04,353 INFO L87 Difference]: Start difference. First operand 1780 states and 2856 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-12 00:08:04,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:04,718 INFO L93 Difference]: Finished difference Result 2894 states and 4658 transitions. [2023-11-12 00:08:04,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:08:04,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2023-11-12 00:08:04,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:04,735 INFO L225 Difference]: With dead ends: 2894 [2023-11-12 00:08:04,735 INFO L226 Difference]: Without dead ends: 1850 [2023-11-12 00:08:04,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:08:04,745 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 7 mSDsluCounter, 2704 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3252 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:04,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3252 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:08:04,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2023-11-12 00:08:04,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1822. [2023-11-12 00:08:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1309 states have (on average 1.5821237585943468) internal successors, (2071), 1361 states have internal predecessors, (2071), 388 states have call successors, (388), 97 states have call predecessors, (388), 124 states have return successors, (457), 387 states have call predecessors, (457), 383 states have call successors, (457) [2023-11-12 00:08:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 2916 transitions. [2023-11-12 00:08:04,888 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 2916 transitions. Word has length 83 [2023-11-12 00:08:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:04,889 INFO L495 AbstractCegarLoop]: Abstraction has 1822 states and 2916 transitions. [2023-11-12 00:08:04,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-12 00:08:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 2916 transitions. [2023-11-12 00:08:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-12 00:08:04,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:04,893 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:04,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:08:04,893 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:04,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:04,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1337783946, now seen corresponding path program 1 times [2023-11-12 00:08:04,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:04,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595160764] [2023-11-12 00:08:04,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:04,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:08:05,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:05,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595160764] [2023-11-12 00:08:05,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595160764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:05,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:05,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:08:05,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930724288] [2023-11-12 00:08:05,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:05,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:08:05,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:05,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:08:05,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:08:05,187 INFO L87 Difference]: Start difference. First operand 1822 states and 2916 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-12 00:08:05,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:05,542 INFO L93 Difference]: Finished difference Result 2952 states and 4734 transitions. [2023-11-12 00:08:05,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:08:05,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2023-11-12 00:08:05,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:05,568 INFO L225 Difference]: With dead ends: 2952 [2023-11-12 00:08:05,568 INFO L226 Difference]: Without dead ends: 1880 [2023-11-12 00:08:05,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:08:05,578 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 6 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:05,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3271 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:08:05,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-11-12 00:08:05,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1828. [2023-11-12 00:08:05,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1315 states have (on average 1.579467680608365) internal successors, (2077), 1361 states have internal predecessors, (2077), 388 states have call successors, (388), 97 states have call predecessors, (388), 124 states have return successors, (457), 393 states have call predecessors, (457), 383 states have call successors, (457) [2023-11-12 00:08:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2922 transitions. [2023-11-12 00:08:05,743 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2922 transitions. Word has length 83 [2023-11-12 00:08:05,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:05,743 INFO L495 AbstractCegarLoop]: Abstraction has 1828 states and 2922 transitions. [2023-11-12 00:08:05,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-12 00:08:05,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2922 transitions. [2023-11-12 00:08:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-12 00:08:05,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:05,749 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:05,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:08:05,750 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:05,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:05,750 INFO L85 PathProgramCache]: Analyzing trace with hash -308716848, now seen corresponding path program 1 times [2023-11-12 00:08:05,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:05,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834158174] [2023-11-12 00:08:05,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:05,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:06,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:08:06,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:06,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834158174] [2023-11-12 00:08:06,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834158174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:06,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:06,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 00:08:06,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720670097] [2023-11-12 00:08:06,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:06,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 00:08:06,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:06,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 00:08:06,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:08:06,203 INFO L87 Difference]: Start difference. First operand 1828 states and 2922 transitions. Second operand has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-12 00:08:09,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:09,801 INFO L93 Difference]: Finished difference Result 4720 states and 7547 transitions. [2023-11-12 00:08:09,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-12 00:08:09,802 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 81 [2023-11-12 00:08:09,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:09,824 INFO L225 Difference]: With dead ends: 4720 [2023-11-12 00:08:09,824 INFO L226 Difference]: Without dead ends: 2908 [2023-11-12 00:08:09,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2023-11-12 00:08:09,840 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 950 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 4785 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 5049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 4785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:09,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 2476 Invalid, 5049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [264 Valid, 4785 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-12 00:08:09,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2023-11-12 00:08:10,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2803. [2023-11-12 00:08:10,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2019 states have (on average 1.5725606736007924) internal successors, (3175), 2079 states have internal predecessors, (3175), 589 states have call successors, (589), 145 states have call predecessors, (589), 194 states have return successors, (700), 611 states have call predecessors, (700), 584 states have call successors, (700) [2023-11-12 00:08:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 4464 transitions. [2023-11-12 00:08:10,061 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 4464 transitions. Word has length 81 [2023-11-12 00:08:10,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:10,061 INFO L495 AbstractCegarLoop]: Abstraction has 2803 states and 4464 transitions. [2023-11-12 00:08:10,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-12 00:08:10,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 4464 transitions. [2023-11-12 00:08:10,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-12 00:08:10,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:10,068 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:10,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:08:10,068 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:10,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:10,069 INFO L85 PathProgramCache]: Analyzing trace with hash -93114492, now seen corresponding path program 1 times [2023-11-12 00:08:10,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:10,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113890711] [2023-11-12 00:08:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:10,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:08:10,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:10,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113890711] [2023-11-12 00:08:10,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113890711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:10,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:10,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:08:10,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600046332] [2023-11-12 00:08:10,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:10,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:08:10,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:10,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:08:10,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:08:10,472 INFO L87 Difference]: Start difference. First operand 2803 states and 4464 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-12 00:08:10,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:10,852 INFO L93 Difference]: Finished difference Result 4944 states and 7878 transitions. [2023-11-12 00:08:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:08:10,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 82 [2023-11-12 00:08:10,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:10,875 INFO L225 Difference]: With dead ends: 4944 [2023-11-12 00:08:10,875 INFO L226 Difference]: Without dead ends: 2895 [2023-11-12 00:08:10,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:08:10,889 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 6 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:10,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3271 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:08:10,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2023-11-12 00:08:11,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2813. [2023-11-12 00:08:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2029 states have (on average 1.5697387875800888) internal successors, (3185), 2079 states have internal predecessors, (3185), 589 states have call successors, (589), 145 states have call predecessors, (589), 194 states have return successors, (700), 621 states have call predecessors, (700), 584 states have call successors, (700) [2023-11-12 00:08:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 4474 transitions. [2023-11-12 00:08:11,111 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 4474 transitions. Word has length 82 [2023-11-12 00:08:11,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:11,111 INFO L495 AbstractCegarLoop]: Abstraction has 2813 states and 4474 transitions. [2023-11-12 00:08:11,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-12 00:08:11,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 4474 transitions. [2023-11-12 00:08:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-12 00:08:11,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:11,116 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:11,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:08:11,116 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:11,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:11,117 INFO L85 PathProgramCache]: Analyzing trace with hash 152957806, now seen corresponding path program 1 times [2023-11-12 00:08:11,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:11,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478973754] [2023-11-12 00:08:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:11,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:11,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:08:11,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:11,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478973754] [2023-11-12 00:08:11,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478973754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:11,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:11,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:08:11,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234444495] [2023-11-12 00:08:11,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:11,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:08:11,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:11,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:08:11,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:08:11,626 INFO L87 Difference]: Start difference. First operand 2813 states and 4474 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 7 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 8 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-12 00:08:14,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:14,255 INFO L93 Difference]: Finished difference Result 6823 states and 10910 transitions. [2023-11-12 00:08:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:08:14,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 7 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 8 states have call predecessors, (15), 6 states have call successors, (15) Word has length 87 [2023-11-12 00:08:14,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:14,295 INFO L225 Difference]: With dead ends: 6823 [2023-11-12 00:08:14,295 INFO L226 Difference]: Without dead ends: 4524 [2023-11-12 00:08:14,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:08:14,317 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1353 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:14,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1495 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-12 00:08:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4524 states. [2023-11-12 00:08:14,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4524 to 4430. [2023-11-12 00:08:14,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4430 states, 3133 states have (on average 1.5260134056814554) internal successors, (4781), 3232 states have internal predecessors, (4781), 963 states have call successors, (963), 256 states have call predecessors, (963), 333 states have return successors, (1176), 996 states have call predecessors, (1176), 958 states have call successors, (1176) [2023-11-12 00:08:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 6920 transitions. [2023-11-12 00:08:14,819 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 6920 transitions. Word has length 87 [2023-11-12 00:08:14,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:14,820 INFO L495 AbstractCegarLoop]: Abstraction has 4430 states and 6920 transitions. [2023-11-12 00:08:14,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 7 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 8 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-12 00:08:14,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 6920 transitions. [2023-11-12 00:08:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 00:08:14,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:14,826 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:14,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:08:14,826 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:14,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:14,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1144759597, now seen corresponding path program 1 times [2023-11-12 00:08:14,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:14,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934452899] [2023-11-12 00:08:14,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:14,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:08:15,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:15,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934452899] [2023-11-12 00:08:15,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934452899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:15,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:15,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:08:15,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397787343] [2023-11-12 00:08:15,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:15,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:08:15,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:15,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:08:15,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:08:15,122 INFO L87 Difference]: Start difference. First operand 4430 states and 6920 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-12 00:08:15,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:15,812 INFO L93 Difference]: Finished difference Result 9186 states and 14670 transitions. [2023-11-12 00:08:15,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:08:15,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 90 [2023-11-12 00:08:15,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:15,866 INFO L225 Difference]: With dead ends: 9186 [2023-11-12 00:08:15,867 INFO L226 Difference]: Without dead ends: 5182 [2023-11-12 00:08:15,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:08:15,897 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 257 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:15,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 3146 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:08:15,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5182 states. [2023-11-12 00:08:16,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5182 to 5182. [2023-11-12 00:08:16,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5182 states, 3829 states have (on average 1.5369548184904676) internal successors, (5885), 3948 states have internal predecessors, (5885), 981 states have call successors, (981), 274 states have call predecessors, (981), 371 states have return successors, (1194), 1014 states have call predecessors, (1194), 976 states have call successors, (1194) [2023-11-12 00:08:16,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5182 states to 5182 states and 8060 transitions. [2023-11-12 00:08:16,377 INFO L78 Accepts]: Start accepts. Automaton has 5182 states and 8060 transitions. Word has length 90 [2023-11-12 00:08:16,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:16,379 INFO L495 AbstractCegarLoop]: Abstraction has 5182 states and 8060 transitions. [2023-11-12 00:08:16,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-12 00:08:16,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5182 states and 8060 transitions. [2023-11-12 00:08:16,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 00:08:16,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:16,383 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:16,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 00:08:16,384 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:16,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:16,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1568652437, now seen corresponding path program 1 times [2023-11-12 00:08:16,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:16,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699861888] [2023-11-12 00:08:16,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:16,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:08:16,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:16,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699861888] [2023-11-12 00:08:16,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699861888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:16,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:16,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:08:16,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529778497] [2023-11-12 00:08:16,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:16,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:08:16,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:16,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:08:16,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:08:16,771 INFO L87 Difference]: Start difference. First operand 5182 states and 8060 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-12 00:08:20,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:20,233 INFO L93 Difference]: Finished difference Result 16616 states and 26545 transitions. [2023-11-12 00:08:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:08:20,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 90 [2023-11-12 00:08:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:20,316 INFO L225 Difference]: With dead ends: 16616 [2023-11-12 00:08:20,316 INFO L226 Difference]: Without dead ends: 11452 [2023-11-12 00:08:20,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:08:20,343 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 2218 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 3316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:20,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2325 Valid, 1494 Invalid, 3316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [936 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-12 00:08:20,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11452 states. [2023-11-12 00:08:21,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11452 to 10738. [2023-11-12 00:08:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10738 states, 7809 states have (on average 1.5234985273402484) internal successors, (11897), 8132 states have internal predecessors, (11897), 2172 states have call successors, (2172), 558 states have call predecessors, (2172), 756 states have return successors, (2811), 2212 states have call predecessors, (2811), 2167 states have call successors, (2811) [2023-11-12 00:08:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10738 states to 10738 states and 16880 transitions. [2023-11-12 00:08:21,282 INFO L78 Accepts]: Start accepts. Automaton has 10738 states and 16880 transitions. Word has length 90 [2023-11-12 00:08:21,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:21,283 INFO L495 AbstractCegarLoop]: Abstraction has 10738 states and 16880 transitions. [2023-11-12 00:08:21,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-12 00:08:21,283 INFO L276 IsEmpty]: Start isEmpty. Operand 10738 states and 16880 transitions. [2023-11-12 00:08:21,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-12 00:08:21,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:21,287 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:21,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 00:08:21,288 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:21,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:21,288 INFO L85 PathProgramCache]: Analyzing trace with hash 141467088, now seen corresponding path program 1 times [2023-11-12 00:08:21,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:21,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729486304] [2023-11-12 00:08:21,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:21,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:08:21,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:21,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729486304] [2023-11-12 00:08:21,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729486304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:21,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:21,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:08:21,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122885606] [2023-11-12 00:08:21,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:21,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:08:21,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:21,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:08:21,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:08:21,793 INFO L87 Difference]: Start difference. First operand 10738 states and 16880 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-12 00:08:24,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:24,606 INFO L93 Difference]: Finished difference Result 20809 states and 32860 transitions. [2023-11-12 00:08:24,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 00:08:24,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (17), 3 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 91 [2023-11-12 00:08:24,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:24,674 INFO L225 Difference]: With dead ends: 20809 [2023-11-12 00:08:24,675 INFO L226 Difference]: Without dead ends: 11617 [2023-11-12 00:08:24,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:08:24,711 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 969 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:24,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1475 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-12 00:08:24,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11617 states. [2023-11-12 00:08:25,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11617 to 10918. [2023-11-12 00:08:25,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10918 states, 7929 states have (on average 1.5191070752932274) internal successors, (12045), 8280 states have internal predecessors, (12045), 2176 states have call successors, (2176), 590 states have call predecessors, (2176), 812 states have return successors, (2887), 2212 states have call predecessors, (2887), 2171 states have call successors, (2887) [2023-11-12 00:08:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10918 states to 10918 states and 17108 transitions. [2023-11-12 00:08:25,615 INFO L78 Accepts]: Start accepts. Automaton has 10918 states and 17108 transitions. Word has length 91 [2023-11-12 00:08:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:25,616 INFO L495 AbstractCegarLoop]: Abstraction has 10918 states and 17108 transitions. [2023-11-12 00:08:25,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-12 00:08:25,616 INFO L276 IsEmpty]: Start isEmpty. Operand 10918 states and 17108 transitions. [2023-11-12 00:08:25,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-12 00:08:25,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:25,620 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:25,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 00:08:25,621 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:25,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:25,621 INFO L85 PathProgramCache]: Analyzing trace with hash 632747872, now seen corresponding path program 1 times [2023-11-12 00:08:25,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:25,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567518558] [2023-11-12 00:08:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:25,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:08:25,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:25,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567518558] [2023-11-12 00:08:25,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567518558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:25,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:25,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:08:25,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090257438] [2023-11-12 00:08:25,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:25,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:08:25,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:25,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:08:25,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:08:25,906 INFO L87 Difference]: Start difference. First operand 10918 states and 17108 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:08:27,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:27,273 INFO L93 Difference]: Finished difference Result 11044 states and 17320 transitions. [2023-11-12 00:08:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:08:27,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (18), 2 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 96 [2023-11-12 00:08:27,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:27,439 INFO L225 Difference]: With dead ends: 11044 [2023-11-12 00:08:27,439 INFO L226 Difference]: Without dead ends: 11029 [2023-11-12 00:08:27,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:08:27,448 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 648 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:27,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1793 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 00:08:27,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11029 states. [2023-11-12 00:08:28,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11029 to 10926. [2023-11-12 00:08:28,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10926 states, 7937 states have (on average 1.5185838478014364) internal successors, (12053), 8288 states have internal predecessors, (12053), 2176 states have call successors, (2176), 590 states have call predecessors, (2176), 812 states have return successors, (2887), 2212 states have call predecessors, (2887), 2171 states have call successors, (2887) [2023-11-12 00:08:28,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10926 states to 10926 states and 17116 transitions. [2023-11-12 00:08:28,648 INFO L78 Accepts]: Start accepts. Automaton has 10926 states and 17116 transitions. Word has length 96 [2023-11-12 00:08:28,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:28,649 INFO L495 AbstractCegarLoop]: Abstraction has 10926 states and 17116 transitions. [2023-11-12 00:08:28,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:08:28,649 INFO L276 IsEmpty]: Start isEmpty. Operand 10926 states and 17116 transitions. [2023-11-12 00:08:28,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-12 00:08:28,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:28,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:28,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 00:08:28,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:28,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:28,656 INFO L85 PathProgramCache]: Analyzing trace with hash -832835149, now seen corresponding path program 1 times [2023-11-12 00:08:28,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:28,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144561485] [2023-11-12 00:08:28,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:28,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:08:29,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:29,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144561485] [2023-11-12 00:08:29,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144561485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:29,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:29,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:08:29,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542613762] [2023-11-12 00:08:29,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:29,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:08:29,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:29,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:08:29,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:08:29,100 INFO L87 Difference]: Start difference. First operand 10926 states and 17116 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-12 00:08:30,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:30,280 INFO L93 Difference]: Finished difference Result 11381 states and 17811 transitions. [2023-11-12 00:08:30,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 00:08:30,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 100 [2023-11-12 00:08:30,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:30,350 INFO L225 Difference]: With dead ends: 11381 [2023-11-12 00:08:30,350 INFO L226 Difference]: Without dead ends: 11366 [2023-11-12 00:08:30,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:08:30,361 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 613 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:30,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 2609 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:08:30,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11366 states.