./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_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_2ebc5fda-7606-4000-a95d-79c2c6e195fa/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebc5fda-7606-4000-a95d-79c2c6e195fa/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_2ebc5fda-7606-4000-a95d-79c2c6e195fa/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebc5fda-7606-4000-a95d-79c2c6e195fa/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebc5fda-7606-4000-a95d-79c2c6e195fa/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_2ebc5fda-7606-4000-a95d-79c2c6e195fa/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 b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:57:19,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:57:19,970 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebc5fda-7606-4000-a95d-79c2c6e195fa/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:57:19,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:57:19,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:57:20,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:57:20,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:57:20,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:57:20,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:57:20,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:57:20,008 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:57:20,009 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:57:20,010 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:57:20,010 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:57:20,011 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:57:20,012 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:57:20,012 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:57:20,013 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:57:20,014 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:57:20,014 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:57:20,015 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:57:20,016 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:57:20,017 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:57:20,018 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:57:20,019 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:57:20,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:57:20,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:57:20,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:57:20,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:57:20,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:57:20,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:57:20,023 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:57:20,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:57:20,024 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:57:20,024 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:57:20,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:57:20,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:57:20,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:57:20,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:57:20,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:57:20,027 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:57:20,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:57:20,028 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:57:20,028 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:57:20,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:57:20,029 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_2ebc5fda-7606-4000-a95d-79c2c6e195fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebc5fda-7606-4000-a95d-79c2c6e195fa/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c [2023-11-12 00:57:20,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:57:20,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:57:20,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:57:20,406 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:57:20,406 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:57:20,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebc5fda-7606-4000-a95d-79c2c6e195fa/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2023-11-12 00:57:23,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:57:23,914 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:57:23,914 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebc5fda-7606-4000-a95d-79c2c6e195fa/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2023-11-12 00:57:23,960 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebc5fda-7606-4000-a95d-79c2c6e195fa/bin/utaipan-verify-NcY6lQBIFX/data/b3fb442b8/0a7798a2d6ed4cdfb183331a8cdb1d30/FLAG7a7738602 [2023-11-12 00:57:23,977 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebc5fda-7606-4000-a95d-79c2c6e195fa/bin/utaipan-verify-NcY6lQBIFX/data/b3fb442b8/0a7798a2d6ed4cdfb183331a8cdb1d30 [2023-11-12 00:57:23,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:57:23,987 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:57:23,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:57:23,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:57:23,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:57:23,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:57:23" (1/1) ... [2023-11-12 00:57:24,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@619a8bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:24, skipping insertion in model container [2023-11-12 00:57:24,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:57:23" (1/1) ... [2023-11-12 00:57:24,170 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:57:24,384 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_2ebc5fda-7606-4000-a95d-79c2c6e195fa/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2023-11-12 00:57:24,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:57:24,823 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:57:24,833 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2023-11-12 00:57:24,835 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [57] [2023-11-12 00:57:24,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [159] [2023-11-12 00:57:24,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [525] [2023-11-12 00:57:24,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [541] [2023-11-12 00:57:24,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [579] [2023-11-12 00:57:24,837 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [932] [2023-11-12 00:57:24,837 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1604] [2023-11-12 00:57:24,837 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1724] [2023-11-12 00:57:24,837 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3302] [2023-11-12 00:57:24,840 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_2ebc5fda-7606-4000-a95d-79c2c6e195fa/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2023-11-12 00:57:24,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:57:24,972 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:57:24,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:24 WrapperNode [2023-11-12 00:57:24,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:57:24,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:57:24,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:57:24,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:57:24,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:24" (1/1) ... [2023-11-12 00:57:25,016 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:24" (1/1) ... [2023-11-12 00:57:25,075 INFO L138 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 908 [2023-11-12 00:57:25,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:57:25,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:57:25,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:57:25,076 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:57:25,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:24" (1/1) ... [2023-11-12 00:57:25,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:24" (1/1) ... [2023-11-12 00:57:25,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:24" (1/1) ... [2023-11-12 00:57:25,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:24" (1/1) ... [2023-11-12 00:57:25,121 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:24" (1/1) ... [2023-11-12 00:57:25,138 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:24" (1/1) ... [2023-11-12 00:57:25,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:24" (1/1) ... [2023-11-12 00:57:25,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:24" (1/1) ... [2023-11-12 00:57:25,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:57:25,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:57:25,184 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:57:25,185 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:57:25,185 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:24" (1/1) ... [2023-11-12 00:57:25,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:57:25,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebc5fda-7606-4000-a95d-79c2c6e195fa/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:57:25,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebc5fda-7606-4000-a95d-79c2c6e195fa/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:57:25,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ebc5fda-7606-4000-a95d-79c2c6e195fa/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:57:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-12 00:57:25,310 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-12 00:57:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:57:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-12 00:57:25,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-12 00:57:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-12 00:57:25,311 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-12 00:57:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-12 00:57:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-12 00:57:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-12 00:57:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-12 00:57:25,314 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-12 00:57:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-12 00:57:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-11-12 00:57:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-11-12 00:57:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-12 00:57:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-12 00:57:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-12 00:57:25,319 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-12 00:57:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-12 00:57:25,319 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-12 00:57:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-12 00:57:25,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-12 00:57:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-12 00:57:25,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-12 00:57:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-12 00:57:25,321 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-12 00:57:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-12 00:57:25,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-12 00:57:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-12 00:57:25,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-12 00:57:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-12 00:57:25,322 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-12 00:57:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-12 00:57:25,323 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-12 00:57:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-12 00:57:25,323 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-12 00:57:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-12 00:57:25,323 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-12 00:57:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-12 00:57:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-12 00:57:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:57:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-12 00:57:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-12 00:57:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-12 00:57:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-12 00:57:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-12 00:57:25,325 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-12 00:57:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-12 00:57:25,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-12 00:57:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-11-12 00:57:25,326 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-11-12 00:57:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:57:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:57:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-12 00:57:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-12 00:57:25,532 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:57:25,535 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:57:26,881 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:57:27,931 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:57:27,931 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:57:27,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:57:27 BoogieIcfgContainer [2023-11-12 00:57:27,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:57:27,940 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:57:27,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:57:27,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:57:27,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:57:23" (1/3) ... [2023-11-12 00:57:27,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69704b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:57:27, skipping insertion in model container [2023-11-12 00:57:27,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:24" (2/3) ... [2023-11-12 00:57:27,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69704b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:57:27, skipping insertion in model container [2023-11-12 00:57:27,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:57:27" (3/3) ... [2023-11-12 00:57:27,949 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2023-11-12 00:57:27,970 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:57:27,970 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:57:28,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:57:28,043 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;@406adcdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:57:28,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:57:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 261 states have (on average 1.5862068965517242) internal successors, (414), 284 states have internal predecessors, (414), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-12 00:57:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 00:57:28,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:28,098 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] [2023-11-12 00:57:28,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:28,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:28,105 INFO L85 PathProgramCache]: Analyzing trace with hash -791523375, now seen corresponding path program 1 times [2023-11-12 00:57:28,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:28,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375420801] [2023-11-12 00:57:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:28,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:29,495 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 00:57:29,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:29,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375420801] [2023-11-12 00:57:29,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375420801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:29,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:29,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:57:29,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20255196] [2023-11-12 00:57:29,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:29,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:57:29,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:29,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:57:29,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:57:29,540 INFO L87 Difference]: Start difference. First operand has 390 states, 261 states have (on average 1.5862068965517242) internal successors, (414), 284 states have internal predecessors, (414), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-12 00:57:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:32,191 INFO L93 Difference]: Finished difference Result 1260 states and 2036 transitions. [2023-11-12 00:57:32,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:57:32,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 54 [2023-11-12 00:57:32,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:32,232 INFO L225 Difference]: With dead ends: 1260 [2023-11-12 00:57:32,233 INFO L226 Difference]: Without dead ends: 887 [2023-11-12 00:57:32,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:57:32,250 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1241 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:32,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 1012 Invalid, 1897 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [454 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-12 00:57:32,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2023-11-12 00:57:32,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 800. [2023-11-12 00:57:32,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 561 states have (on average 1.6007130124777185) internal successors, (898), 591 states have internal predecessors, (898), 193 states have call successors, (193), 44 states have call predecessors, (193), 45 states have return successors, (195), 177 states have call predecessors, (195), 188 states have call successors, (195) [2023-11-12 00:57:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1286 transitions. [2023-11-12 00:57:32,414 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1286 transitions. Word has length 54 [2023-11-12 00:57:32,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:32,415 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1286 transitions. [2023-11-12 00:57:32,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-12 00:57:32,415 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1286 transitions. [2023-11-12 00:57:32,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-12 00:57:32,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:32,425 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] [2023-11-12 00:57:32,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:57:32,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:32,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:32,427 INFO L85 PathProgramCache]: Analyzing trace with hash -942400081, now seen corresponding path program 1 times [2023-11-12 00:57:32,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:32,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151494539] [2023-11-12 00:57:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:32,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:33,079 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 00:57:33,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:33,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151494539] [2023-11-12 00:57:33,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151494539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:33,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:33,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:57:33,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827511815] [2023-11-12 00:57:33,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:33,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:57:33,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:33,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:57:33,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:57:33,091 INFO L87 Difference]: Start difference. First operand 800 states and 1286 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-12 00:57:33,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:33,505 INFO L93 Difference]: Finished difference Result 1767 states and 2881 transitions. [2023-11-12 00:57:33,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:57:33,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 87 [2023-11-12 00:57:33,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:33,521 INFO L225 Difference]: With dead ends: 1767 [2023-11-12 00:57:33,521 INFO L226 Difference]: Without dead ends: 991 [2023-11-12 00:57:33,532 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 00:57:33,535 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 177 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:33,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2300 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:57:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2023-11-12 00:57:33,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 806. [2023-11-12 00:57:33,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 567 states have (on average 1.5943562610229276) internal successors, (904), 597 states have internal predecessors, (904), 193 states have call successors, (193), 44 states have call predecessors, (193), 45 states have return successors, (195), 177 states have call predecessors, (195), 188 states have call successors, (195) [2023-11-12 00:57:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1292 transitions. [2023-11-12 00:57:33,687 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1292 transitions. Word has length 87 [2023-11-12 00:57:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:33,688 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1292 transitions. [2023-11-12 00:57:33,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-12 00:57:33,688 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1292 transitions. [2023-11-12 00:57:33,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-12 00:57:33,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:33,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:33,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:57:33,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:33,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:33,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1061779320, now seen corresponding path program 1 times [2023-11-12 00:57:33,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:33,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453351661] [2023-11-12 00:57:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:33,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:57:34,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:34,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453351661] [2023-11-12 00:57:34,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453351661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:34,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:34,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 00:57:34,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417751366] [2023-11-12 00:57:34,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:34,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 00:57:34,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:34,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 00:57:34,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:57:34,339 INFO L87 Difference]: Start difference. First operand 806 states and 1292 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-12 00:57:37,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:37,911 INFO L93 Difference]: Finished difference Result 2764 states and 4480 transitions. [2023-11-12 00:57:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-12 00:57:37,912 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 89 [2023-11-12 00:57:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:37,937 INFO L225 Difference]: With dead ends: 2764 [2023-11-12 00:57:37,938 INFO L226 Difference]: Without dead ends: 1982 [2023-11-12 00:57:37,949 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 00:57:37,955 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 1754 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 4181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:37,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1819 Valid, 2558 Invalid, 4181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [571 Valid, 3610 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-12 00:57:37,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2023-11-12 00:57:38,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1881. [2023-11-12 00:57:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1354 states have (on average 1.605612998522895) internal successors, (2174), 1406 states have internal predecessors, (2174), 419 states have call successors, (419), 92 states have call predecessors, (419), 107 states have return successors, (458), 406 states have call predecessors, (458), 414 states have call successors, (458) [2023-11-12 00:57:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 3051 transitions. [2023-11-12 00:57:38,130 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 3051 transitions. Word has length 89 [2023-11-12 00:57:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:38,131 INFO L495 AbstractCegarLoop]: Abstraction has 1881 states and 3051 transitions. [2023-11-12 00:57:38,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-12 00:57:38,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 3051 transitions. [2023-11-12 00:57:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-12 00:57:38,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:38,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:38,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:57:38,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:38,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:38,139 INFO L85 PathProgramCache]: Analyzing trace with hash -134543040, now seen corresponding path program 1 times [2023-11-12 00:57:38,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:38,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88749490] [2023-11-12 00:57:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:38,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:57:38,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:38,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88749490] [2023-11-12 00:57:38,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88749490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:38,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:38,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:57:38,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068992836] [2023-11-12 00:57:38,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:38,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:57:38,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:38,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:57:38,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:57:38,737 INFO L87 Difference]: Start difference. First operand 1881 states and 3051 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-12 00:57:42,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:42,428 INFO L93 Difference]: Finished difference Result 5183 states and 8421 transitions. [2023-11-12 00:57:42,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-12 00:57:42,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 92 [2023-11-12 00:57:42,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:42,458 INFO L225 Difference]: With dead ends: 5183 [2023-11-12 00:57:42,458 INFO L226 Difference]: Without dead ends: 3325 [2023-11-12 00:57:42,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-11-12 00:57:42,476 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 1366 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 4061 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 4715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 4061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:42,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 2124 Invalid, 4715 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [654 Valid, 4061 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-12 00:57:42,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2023-11-12 00:57:42,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 3110. [2023-11-12 00:57:42,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3110 states, 2206 states have (on average 1.5897552130553037) internal successors, (3507), 2297 states have internal predecessors, (3507), 732 states have call successors, (732), 141 states have call predecessors, (732), 171 states have return successors, (795), 715 states have call predecessors, (795), 727 states have call successors, (795) [2023-11-12 00:57:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 5034 transitions. [2023-11-12 00:57:42,827 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 5034 transitions. Word has length 92 [2023-11-12 00:57:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:42,828 INFO L495 AbstractCegarLoop]: Abstraction has 3110 states and 5034 transitions. [2023-11-12 00:57:42,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-12 00:57:42,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 5034 transitions. [2023-11-12 00:57:42,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 00:57:42,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:42,832 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:42,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:57:42,833 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:42,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:42,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1940930470, now seen corresponding path program 1 times [2023-11-12 00:57:42,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:42,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141604850] [2023-11-12 00:57:42,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:42,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:57:43,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:43,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141604850] [2023-11-12 00:57:43,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141604850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:43,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:43,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:57:43,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690267536] [2023-11-12 00:57:43,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:43,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:57:43,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:43,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:57:43,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:57:43,224 INFO L87 Difference]: Start difference. First operand 3110 states and 5034 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:57:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:43,761 INFO L93 Difference]: Finished difference Result 5549 states and 9002 transitions. [2023-11-12 00:57:43,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:57:43,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2023-11-12 00:57:43,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:43,795 INFO L225 Difference]: With dead ends: 5549 [2023-11-12 00:57:43,795 INFO L226 Difference]: Without dead ends: 3222 [2023-11-12 00:57:43,812 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 00:57:43,815 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 7 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3390 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:43,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3390 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:57:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2023-11-12 00:57:44,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 3180. [2023-11-12 00:57:44,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3180 states, 2256 states have (on average 1.5766843971631206) internal successors, (3557), 2347 states have internal predecessors, (3557), 732 states have call successors, (732), 141 states have call predecessors, (732), 191 states have return successors, (845), 735 states have call predecessors, (845), 727 states have call successors, (845) [2023-11-12 00:57:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 5134 transitions. [2023-11-12 00:57:44,123 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 5134 transitions. Word has length 93 [2023-11-12 00:57:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:44,125 INFO L495 AbstractCegarLoop]: Abstraction has 3180 states and 5134 transitions. [2023-11-12 00:57:44,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:57:44,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 5134 transitions. [2023-11-12 00:57:44,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 00:57:44,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:44,134 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:44,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:57:44,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:44,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:44,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2080849153, now seen corresponding path program 1 times [2023-11-12 00:57:44,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:44,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743503026] [2023-11-12 00:57:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:44,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:57:44,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:44,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743503026] [2023-11-12 00:57:44,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743503026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:44,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:44,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:57:44,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278207071] [2023-11-12 00:57:44,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:44,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:57:44,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:44,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:57:44,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:57:44,516 INFO L87 Difference]: Start difference. First operand 3180 states and 5134 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:57:44,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:44,952 INFO L93 Difference]: Finished difference Result 5655 states and 9142 transitions. [2023-11-12 00:57:44,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:57:44,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2023-11-12 00:57:44,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:44,984 INFO L225 Difference]: With dead ends: 5655 [2023-11-12 00:57:44,984 INFO L226 Difference]: Without dead ends: 3272 [2023-11-12 00:57:45,000 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 00:57:45,001 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 7 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3390 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:45,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3390 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:57:45,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2023-11-12 00:57:45,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3190. [2023-11-12 00:57:45,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 2266 states have (on average 1.5741394527802295) internal successors, (3567), 2347 states have internal predecessors, (3567), 732 states have call successors, (732), 141 states have call predecessors, (732), 191 states have return successors, (845), 745 states have call predecessors, (845), 727 states have call successors, (845) [2023-11-12 00:57:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 5144 transitions. [2023-11-12 00:57:45,318 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 5144 transitions. Word has length 94 [2023-11-12 00:57:45,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:45,319 INFO L495 AbstractCegarLoop]: Abstraction has 3190 states and 5144 transitions. [2023-11-12 00:57:45,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:57:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 5144 transitions. [2023-11-12 00:57:45,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 00:57:45,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:45,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:45,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:57:45,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:45,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:45,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2095705375, now seen corresponding path program 1 times [2023-11-12 00:57:45,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:45,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503692146] [2023-11-12 00:57:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:45,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:57:45,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:45,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503692146] [2023-11-12 00:57:45,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503692146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:45,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:45,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:57:45,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296919225] [2023-11-12 00:57:45,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:45,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:57:45,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:45,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:57:45,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:57:45,679 INFO L87 Difference]: Start difference. First operand 3190 states and 5144 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:57:46,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:46,141 INFO L93 Difference]: Finished difference Result 5673 states and 9160 transitions. [2023-11-12 00:57:46,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:57:46,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2023-11-12 00:57:46,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:46,166 INFO L225 Difference]: With dead ends: 5673 [2023-11-12 00:57:46,167 INFO L226 Difference]: Without dead ends: 3282 [2023-11-12 00:57:46,180 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 00:57:46,181 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 6 mSDsluCounter, 2830 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:46,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3404 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:57:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2023-11-12 00:57:46,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 3200. [2023-11-12 00:57:46,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2276 states have (on average 1.5716168717047452) internal successors, (3577), 2347 states have internal predecessors, (3577), 732 states have call successors, (732), 141 states have call predecessors, (732), 191 states have return successors, (845), 755 states have call predecessors, (845), 727 states have call successors, (845) [2023-11-12 00:57:46,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5154 transitions. [2023-11-12 00:57:46,476 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5154 transitions. Word has length 94 [2023-11-12 00:57:46,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:46,477 INFO L495 AbstractCegarLoop]: Abstraction has 3200 states and 5154 transitions. [2023-11-12 00:57:46,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:57:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5154 transitions. [2023-11-12 00:57:46,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-12 00:57:46,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:46,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:46,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:57:46,484 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:46,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:46,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1059961447, now seen corresponding path program 1 times [2023-11-12 00:57:46,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:46,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717413869] [2023-11-12 00:57:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:46,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:47,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:57:47,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:47,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717413869] [2023-11-12 00:57:47,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717413869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:47,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:47,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:57:47,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053933034] [2023-11-12 00:57:47,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:47,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:57:47,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:47,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:57:47,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:57:47,083 INFO L87 Difference]: Start difference. First operand 3200 states and 5154 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-12 00:57:49,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:49,896 INFO L93 Difference]: Finished difference Result 7984 states and 12948 transitions. [2023-11-12 00:57:49,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:57:49,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) Word has length 98 [2023-11-12 00:57:49,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:49,938 INFO L225 Difference]: With dead ends: 7984 [2023-11-12 00:57:49,938 INFO L226 Difference]: Without dead ends: 5343 [2023-11-12 00:57:49,956 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 00:57:49,958 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 2097 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2263 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:49,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2263 Valid, 1330 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [847 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-12 00:57:49,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5343 states. [2023-11-12 00:57:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5343 to 5204. [2023-11-12 00:57:50,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5204 states, 3627 states have (on average 1.533498759305211) internal successors, (5562), 3768 states have internal predecessors, (5562), 1246 states have call successors, (1246), 250 states have call predecessors, (1246), 330 states have return successors, (1466), 1262 states have call predecessors, (1466), 1241 states have call successors, (1466) [2023-11-12 00:57:50,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 8274 transitions. [2023-11-12 00:57:50,545 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 8274 transitions. Word has length 98 [2023-11-12 00:57:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:50,545 INFO L495 AbstractCegarLoop]: Abstraction has 5204 states and 8274 transitions. [2023-11-12 00:57:50,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-12 00:57:50,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 8274 transitions. [2023-11-12 00:57:50,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-12 00:57:50,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:50,549 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:50,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:57:50,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:50,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:50,551 INFO L85 PathProgramCache]: Analyzing trace with hash -614291400, now seen corresponding path program 1 times [2023-11-12 00:57:50,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:50,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294814767] [2023-11-12 00:57:50,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:50,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:51,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:57:51,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:51,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294814767] [2023-11-12 00:57:51,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294814767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:51,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:51,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 00:57:51,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213675546] [2023-11-12 00:57:51,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:51,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 00:57:51,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:51,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 00:57:51,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:57:51,149 INFO L87 Difference]: Start difference. First operand 5204 states and 8274 transitions. Second operand has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) [2023-11-12 00:57:57,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:57,178 INFO L93 Difference]: Finished difference Result 10927 states and 17674 transitions. [2023-11-12 00:57:57,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-12 00:57:57,179 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) Word has length 100 [2023-11-12 00:57:57,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:57,240 INFO L225 Difference]: With dead ends: 10927 [2023-11-12 00:57:57,241 INFO L226 Difference]: Without dead ends: 6194 [2023-11-12 00:57:57,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=1434, Unknown=0, NotChecked=0, Total=1640 [2023-11-12 00:57:57,284 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 2215 mSDsluCounter, 4030 mSDsCounter, 0 mSdLazyCounter, 6998 mSolverCounterSat, 1199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2233 SdHoareTripleChecker+Valid, 4566 SdHoareTripleChecker+Invalid, 8197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1199 IncrementalHoareTripleChecker+Valid, 6998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:57,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2233 Valid, 4566 Invalid, 8197 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1199 Valid, 6998 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-12 00:57:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2023-11-12 00:57:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 6000. [2023-11-12 00:57:57,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6000 states, 4352 states have (on average 1.5415900735294117) internal successors, (6709), 4513 states have internal predecessors, (6709), 1269 states have call successors, (1269), 278 states have call predecessors, (1269), 378 states have return successors, (1489), 1285 states have call predecessors, (1489), 1264 states have call successors, (1489) [2023-11-12 00:57:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6000 states to 6000 states and 9467 transitions. [2023-11-12 00:57:57,987 INFO L78 Accepts]: Start accepts. Automaton has 6000 states and 9467 transitions. Word has length 100 [2023-11-12 00:57:57,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:57,989 INFO L495 AbstractCegarLoop]: Abstraction has 6000 states and 9467 transitions. [2023-11-12 00:57:57,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) [2023-11-12 00:57:57,989 INFO L276 IsEmpty]: Start isEmpty. Operand 6000 states and 9467 transitions. [2023-11-12 00:57:57,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 00:57:57,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:57,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:57,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:57:57,993 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:57:57,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1302931655, now seen corresponding path program 1 times [2023-11-12 00:57:57,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:57,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628080181] [2023-11-12 00:57:57,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:57,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:57:58,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:58,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628080181] [2023-11-12 00:57:58,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628080181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:58,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:58,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:57:58,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093949142] [2023-11-12 00:57:58,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:58,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:57:58,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:58,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:57:58,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:57:58,361 INFO L87 Difference]: Start difference. First operand 6000 states and 9467 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-12 00:58:02,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:02,219 INFO L93 Difference]: Finished difference Result 19473 states and 31485 transitions. [2023-11-12 00:58:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:58:02,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) Word has length 101 [2023-11-12 00:58:02,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:02,304 INFO L225 Difference]: With dead ends: 19473 [2023-11-12 00:58:02,304 INFO L226 Difference]: Without dead ends: 13498 [2023-11-12 00:58:02,328 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 00:58:02,329 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 2224 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 947 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 947 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:02,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 1681 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [947 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-12 00:58:02,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13498 states. [2023-11-12 00:58:03,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13498 to 12607. [2023-11-12 00:58:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12607 states, 8978 states have (on average 1.530630429939853) internal successors, (13742), 9421 states have internal predecessors, (13742), 2857 states have call successors, (2857), 566 states have call predecessors, (2857), 771 states have return successors, (3519), 2850 states have call predecessors, (3519), 2852 states have call successors, (3519) [2023-11-12 00:58:03,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12607 states to 12607 states and 20118 transitions. [2023-11-12 00:58:03,919 INFO L78 Accepts]: Start accepts. Automaton has 12607 states and 20118 transitions. Word has length 101 [2023-11-12 00:58:03,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:03,920 INFO L495 AbstractCegarLoop]: Abstraction has 12607 states and 20118 transitions. [2023-11-12 00:58:03,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-12 00:58:03,920 INFO L276 IsEmpty]: Start isEmpty. Operand 12607 states and 20118 transitions. [2023-11-12 00:58:03,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-12 00:58:03,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:03,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:58:03,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 00:58:03,927 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:58:03,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:03,928 INFO L85 PathProgramCache]: Analyzing trace with hash -82130165, now seen corresponding path program 1 times [2023-11-12 00:58:03,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:03,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926558715] [2023-11-12 00:58:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:03,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat