./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 38bd35bc88609e3ab03fd0664ba55e28973f1f4c4d5b4f19ae2a936fbd22c96e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:08:11,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:08:12,043 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:08:12,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:08:12,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:08:12,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:08:12,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:08:12,075 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:08:12,076 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:08:12,076 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:08:12,077 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:08:12,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:08:12,078 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:08:12,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:08:12,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:08:12,080 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:08:12,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:08:12,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:08:12,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:08:12,082 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:08:12,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:08:12,084 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:08:12,084 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:08:12,088 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:08:12,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:08:12,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:12,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:08:12,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:08:12,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:08:12,094 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:08:12,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:08:12,095 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:08:12,096 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:08:12,096 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:08:12,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:08:12,097 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:08:12,097 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38bd35bc88609e3ab03fd0664ba55e28973f1f4c4d5b4f19ae2a936fbd22c96e [2023-11-12 02:08:12,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:08:12,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:08:12,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:08:12,430 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:08:12,431 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:08:12,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c [2023-11-12 02:08:15,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:08:15,867 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:08:15,868 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c [2023-11-12 02:08:15,885 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/data/9a17067b5/2fabd940282846d8ab4780c2b094c48b/FLAG9dd2ed434 [2023-11-12 02:08:15,900 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/data/9a17067b5/2fabd940282846d8ab4780c2b094c48b [2023-11-12 02:08:15,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:08:15,905 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:08:15,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:15,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:08:15,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:08:15,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:15" (1/1) ... [2023-11-12 02:08:15,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d956d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:15, skipping insertion in model container [2023-11-12 02:08:15,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:15" (1/1) ... [2023-11-12 02:08:15,959 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:08:16,175 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_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c[1251,1264] [2023-11-12 02:08:16,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:16,478 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:08:16,491 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_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c[1251,1264] [2023-11-12 02:08:16,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:16,615 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:08:16,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:16 WrapperNode [2023-11-12 02:08:16,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:16,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:16,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:08:16,617 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:08:16,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:16" (1/1) ... [2023-11-12 02:08:16,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:16" (1/1) ... [2023-11-12 02:08:16,889 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1488 [2023-11-12 02:08:16,889 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:16,890 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:08:16,890 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:08:16,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:08:16,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:16" (1/1) ... [2023-11-12 02:08:16,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:16" (1/1) ... [2023-11-12 02:08:16,960 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:16" (1/1) ... [2023-11-12 02:08:16,961 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:16" (1/1) ... [2023-11-12 02:08:17,027 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:16" (1/1) ... [2023-11-12 02:08:17,037 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:16" (1/1) ... [2023-11-12 02:08:17,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:16" (1/1) ... [2023-11-12 02:08:17,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:16" (1/1) ... [2023-11-12 02:08:17,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:08:17,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:08:17,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:08:17,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:08:17,094 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:16" (1/1) ... [2023-11-12 02:08:17,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:17,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:17,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:08:17,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:08:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:08:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:08:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:08:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:08:17,408 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:08:17,410 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:08:19,278 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:08:19,290 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:08:19,291 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:08:19,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:19 BoogieIcfgContainer [2023-11-12 02:08:19,295 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:08:19,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:08:19,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:08:19,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:08:19,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:08:15" (1/3) ... [2023-11-12 02:08:19,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786c5516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:19, skipping insertion in model container [2023-11-12 02:08:19,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:16" (2/3) ... [2023-11-12 02:08:19,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786c5516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:19, skipping insertion in model container [2023-11-12 02:08:19,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:19" (3/3) ... [2023-11-12 02:08:19,309 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_sym_ex_v.c [2023-11-12 02:08:19,331 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:08:19,331 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:08:19,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:08:19,422 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f50fc8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:08:19,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:08:19,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 290 states, 288 states have (on average 1.6597222222222223) internal successors, (478), 289 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:19,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-12 02:08:19,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:19,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:19,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:19,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:19,449 INFO L85 PathProgramCache]: Analyzing trace with hash -720266889, now seen corresponding path program 1 times [2023-11-12 02:08:19,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:19,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388047501] [2023-11-12 02:08:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:19,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:20,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:20,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388047501] [2023-11-12 02:08:20,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388047501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:20,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:20,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:08:20,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819697601] [2023-11-12 02:08:20,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:20,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:08:20,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:20,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:08:20,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:20,281 INFO L87 Difference]: Start difference. First operand has 290 states, 288 states have (on average 1.6597222222222223) internal successors, (478), 289 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:20,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:20,397 INFO L93 Difference]: Finished difference Result 543 states and 899 transitions. [2023-11-12 02:08:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:08:20,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-11-12 02:08:20,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:20,415 INFO L225 Difference]: With dead ends: 543 [2023-11-12 02:08:20,415 INFO L226 Difference]: Without dead ends: 288 [2023-11-12 02:08:20,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:20,423 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:20,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1404 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:20,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-12 02:08:20,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-11-12 02:08:20,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.651567944250871) internal successors, (474), 287 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 474 transitions. [2023-11-12 02:08:20,500 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 474 transitions. Word has length 37 [2023-11-12 02:08:20,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:20,502 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 474 transitions. [2023-11-12 02:08:20,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:20,502 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 474 transitions. [2023-11-12 02:08:20,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-12 02:08:20,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:20,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:20,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:08:20,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:20,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:20,506 INFO L85 PathProgramCache]: Analyzing trace with hash -851711939, now seen corresponding path program 1 times [2023-11-12 02:08:20,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:20,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299708405] [2023-11-12 02:08:20,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:20,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:20,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:20,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:20,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299708405] [2023-11-12 02:08:20,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299708405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:20,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:20,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:08:20,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766153129] [2023-11-12 02:08:20,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:20,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:08:20,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:20,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:08:20,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:20,738 INFO L87 Difference]: Start difference. First operand 288 states and 474 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:20,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:20,785 INFO L93 Difference]: Finished difference Result 544 states and 895 transitions. [2023-11-12 02:08:20,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:08:20,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-11-12 02:08:20,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:20,790 INFO L225 Difference]: With dead ends: 544 [2023-11-12 02:08:20,790 INFO L226 Difference]: Without dead ends: 291 [2023-11-12 02:08:20,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:20,793 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:20,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1401 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:20,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-12 02:08:20,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 290. [2023-11-12 02:08:20,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.6470588235294117) internal successors, (476), 289 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:20,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 476 transitions. [2023-11-12 02:08:20,821 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 476 transitions. Word has length 38 [2023-11-12 02:08:20,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:20,822 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 476 transitions. [2023-11-12 02:08:20,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:20,823 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 476 transitions. [2023-11-12 02:08:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 02:08:20,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:20,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:20,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:08:20,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:20,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:20,832 INFO L85 PathProgramCache]: Analyzing trace with hash -843698607, now seen corresponding path program 1 times [2023-11-12 02:08:20,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:20,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628574083] [2023-11-12 02:08:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:20,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:21,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:21,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:21,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628574083] [2023-11-12 02:08:21,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628574083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:21,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:21,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:21,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538032480] [2023-11-12 02:08:21,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:21,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:21,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:21,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:21,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:21,162 INFO L87 Difference]: Start difference. First operand 290 states and 476 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:21,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:21,303 INFO L93 Difference]: Finished difference Result 802 states and 1319 transitions. [2023-11-12 02:08:21,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:08:21,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-12 02:08:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:21,309 INFO L225 Difference]: With dead ends: 802 [2023-11-12 02:08:21,309 INFO L226 Difference]: Without dead ends: 547 [2023-11-12 02:08:21,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:21,318 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 1678 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1678 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:21,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1678 Valid, 1397 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:21,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-11-12 02:08:21,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 301. [2023-11-12 02:08:21,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.6433333333333333) internal successors, (493), 300 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:21,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 493 transitions. [2023-11-12 02:08:21,351 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 493 transitions. Word has length 39 [2023-11-12 02:08:21,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:21,352 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 493 transitions. [2023-11-12 02:08:21,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:21,354 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 493 transitions. [2023-11-12 02:08:21,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-12 02:08:21,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:21,374 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:21,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:08:21,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:21,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:21,377 INFO L85 PathProgramCache]: Analyzing trace with hash 340323883, now seen corresponding path program 1 times [2023-11-12 02:08:21,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:21,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656503369] [2023-11-12 02:08:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:21,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:23,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:23,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656503369] [2023-11-12 02:08:23,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656503369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:23,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:23,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:23,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065220133] [2023-11-12 02:08:23,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:23,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:23,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:23,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:23,645 INFO L87 Difference]: Start difference. First operand 301 states and 493 transitions. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:23,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:23,823 INFO L93 Difference]: Finished difference Result 849 states and 1391 transitions. [2023-11-12 02:08:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:08:23,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2023-11-12 02:08:23,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:23,828 INFO L225 Difference]: With dead ends: 849 [2023-11-12 02:08:23,828 INFO L226 Difference]: Without dead ends: 594 [2023-11-12 02:08:23,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:23,831 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 1721 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:23,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 1450 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:23,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-11-12 02:08:23,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 341. [2023-11-12 02:08:23,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.6323529411764706) internal successors, (555), 340 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:23,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 555 transitions. [2023-11-12 02:08:23,845 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 555 transitions. Word has length 206 [2023-11-12 02:08:23,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:23,846 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 555 transitions. [2023-11-12 02:08:23,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:23,847 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 555 transitions. [2023-11-12 02:08:23,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-12 02:08:23,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:23,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:23,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:08:23,852 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:23,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:23,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1491610007, now seen corresponding path program 1 times [2023-11-12 02:08:23,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:23,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571200164] [2023-11-12 02:08:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:23,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:26,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:26,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571200164] [2023-11-12 02:08:26,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571200164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:26,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:26,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:26,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433757863] [2023-11-12 02:08:26,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:26,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:26,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:26,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:26,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:26,674 INFO L87 Difference]: Start difference. First operand 341 states and 555 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:26,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:26,878 INFO L93 Difference]: Finished difference Result 894 states and 1464 transitions. [2023-11-12 02:08:26,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:08:26,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2023-11-12 02:08:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:26,884 INFO L225 Difference]: With dead ends: 894 [2023-11-12 02:08:26,885 INFO L226 Difference]: Without dead ends: 639 [2023-11-12 02:08:26,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:26,887 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 1764 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1764 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:26,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1764 Valid, 1520 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:26,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-11-12 02:08:26,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 385. [2023-11-12 02:08:26,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.6328125) internal successors, (627), 384 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 627 transitions. [2023-11-12 02:08:26,902 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 627 transitions. Word has length 207 [2023-11-12 02:08:26,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:26,903 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 627 transitions. [2023-11-12 02:08:26,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:26,903 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 627 transitions. [2023-11-12 02:08:26,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-12 02:08:26,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:26,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:26,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:08:26,908 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:26,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:26,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1475509405, now seen corresponding path program 1 times [2023-11-12 02:08:26,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:26,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945261776] [2023-11-12 02:08:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:26,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:28,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:28,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945261776] [2023-11-12 02:08:28,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945261776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:28,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:28,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:28,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389311843] [2023-11-12 02:08:28,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:28,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:28,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:28,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:28,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:28,996 INFO L87 Difference]: Start difference. First operand 385 states and 627 transitions. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:29,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:29,193 INFO L93 Difference]: Finished difference Result 918 states and 1503 transitions. [2023-11-12 02:08:29,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:08:29,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-11-12 02:08:29,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:29,198 INFO L225 Difference]: With dead ends: 918 [2023-11-12 02:08:29,198 INFO L226 Difference]: Without dead ends: 663 [2023-11-12 02:08:29,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:29,201 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 1785 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:29,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1785 Valid, 1558 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:29,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2023-11-12 02:08:29,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 409. [2023-11-12 02:08:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 1.6323529411764706) internal successors, (666), 408 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 666 transitions. [2023-11-12 02:08:29,227 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 666 transitions. Word has length 208 [2023-11-12 02:08:29,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:29,229 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 666 transitions. [2023-11-12 02:08:29,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:29,230 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 666 transitions. [2023-11-12 02:08:29,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-12 02:08:29,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:29,233 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:29,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:08:29,236 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:29,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:29,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1717807833, now seen corresponding path program 1 times [2023-11-12 02:08:29,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:29,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141981233] [2023-11-12 02:08:29,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:29,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:31,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:31,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141981233] [2023-11-12 02:08:31,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141981233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:31,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:31,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:31,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358779896] [2023-11-12 02:08:31,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:31,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:08:31,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:31,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:08:31,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:31,416 INFO L87 Difference]: Start difference. First operand 409 states and 666 transitions. Second operand has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:31,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:31,698 INFO L93 Difference]: Finished difference Result 1048 states and 1718 transitions. [2023-11-12 02:08:31,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:08:31,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2023-11-12 02:08:31,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:31,704 INFO L225 Difference]: With dead ends: 1048 [2023-11-12 02:08:31,704 INFO L226 Difference]: Without dead ends: 793 [2023-11-12 02:08:31,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:08:31,708 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 1806 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:31,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1806 Valid, 2999 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:31,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-11-12 02:08:31,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 412. [2023-11-12 02:08:31,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.6301703163017032) internal successors, (670), 411 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 670 transitions. [2023-11-12 02:08:31,727 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 670 transitions. Word has length 209 [2023-11-12 02:08:31,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:31,727 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 670 transitions. [2023-11-12 02:08:31,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 670 transitions. [2023-11-12 02:08:31,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-12 02:08:31,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:31,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:31,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:08:31,732 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:31,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:31,732 INFO L85 PathProgramCache]: Analyzing trace with hash 410665435, now seen corresponding path program 1 times [2023-11-12 02:08:31,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:31,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762113112] [2023-11-12 02:08:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:31,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:33,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:33,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762113112] [2023-11-12 02:08:33,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762113112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:33,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:33,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:33,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582170990] [2023-11-12 02:08:33,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:33,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:33,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:33,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:33,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:33,685 INFO L87 Difference]: Start difference. First operand 412 states and 670 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:33,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:33,860 INFO L93 Difference]: Finished difference Result 944 states and 1544 transitions. [2023-11-12 02:08:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:08:33,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2023-11-12 02:08:33,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:33,866 INFO L225 Difference]: With dead ends: 944 [2023-11-12 02:08:33,866 INFO L226 Difference]: Without dead ends: 689 [2023-11-12 02:08:33,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:33,868 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 1806 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:33,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1806 Valid, 1596 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-11-12 02:08:33,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 435. [2023-11-12 02:08:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 1.6290322580645162) internal successors, (707), 434 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:33,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 707 transitions. [2023-11-12 02:08:33,885 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 707 transitions. Word has length 209 [2023-11-12 02:08:33,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:33,886 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 707 transitions. [2023-11-12 02:08:33,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:33,886 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 707 transitions. [2023-11-12 02:08:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-12 02:08:33,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:33,889 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:33,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:08:33,890 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:33,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:33,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1913999505, now seen corresponding path program 1 times [2023-11-12 02:08:33,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:33,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302477925] [2023-11-12 02:08:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:33,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:35,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:35,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302477925] [2023-11-12 02:08:35,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302477925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:35,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:35,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:35,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118396619] [2023-11-12 02:08:35,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:35,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:08:35,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:35,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:08:35,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:35,758 INFO L87 Difference]: Start difference. First operand 435 states and 707 transitions. Second operand has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:36,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:36,083 INFO L93 Difference]: Finished difference Result 1050 states and 1719 transitions. [2023-11-12 02:08:36,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:08:36,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2023-11-12 02:08:36,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:36,089 INFO L225 Difference]: With dead ends: 1050 [2023-11-12 02:08:36,089 INFO L226 Difference]: Without dead ends: 795 [2023-11-12 02:08:36,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:08:36,092 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 1572 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:36,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 3541 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:08:36,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-11-12 02:08:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 438. [2023-11-12 02:08:36,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 1.6270022883295194) internal successors, (711), 437 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:36,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 711 transitions. [2023-11-12 02:08:36,110 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 711 transitions. Word has length 210 [2023-11-12 02:08:36,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:36,111 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 711 transitions. [2023-11-12 02:08:36,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:36,112 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 711 transitions. [2023-11-12 02:08:36,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-12 02:08:36,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:36,115 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:36,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:08:36,116 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:36,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:36,122 INFO L85 PathProgramCache]: Analyzing trace with hash -504484973, now seen corresponding path program 1 times [2023-11-12 02:08:36,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:36,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877796048] [2023-11-12 02:08:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:36,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:37,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:37,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877796048] [2023-11-12 02:08:37,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877796048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:37,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:37,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:37,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048390343] [2023-11-12 02:08:37,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:37,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:37,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:37,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:37,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:37,840 INFO L87 Difference]: Start difference. First operand 438 states and 711 transitions. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:38,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:38,021 INFO L93 Difference]: Finished difference Result 970 states and 1585 transitions. [2023-11-12 02:08:38,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:08:38,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2023-11-12 02:08:38,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:38,029 INFO L225 Difference]: With dead ends: 970 [2023-11-12 02:08:38,029 INFO L226 Difference]: Without dead ends: 715 [2023-11-12 02:08:38,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:38,030 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 1827 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:38,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1827 Valid, 1634 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:38,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-11-12 02:08:38,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 461. [2023-11-12 02:08:38,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.626086956521739) internal successors, (748), 460 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:38,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 748 transitions. [2023-11-12 02:08:38,049 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 748 transitions. Word has length 210 [2023-11-12 02:08:38,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:38,050 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 748 transitions. [2023-11-12 02:08:38,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:38,050 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 748 transitions. [2023-11-12 02:08:38,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-12 02:08:38,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:38,062 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:38,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:08:38,062 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:38,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:38,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1068133623, now seen corresponding path program 1 times [2023-11-12 02:08:38,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:38,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084183735] [2023-11-12 02:08:38,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:38,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:39,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:39,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084183735] [2023-11-12 02:08:39,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084183735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:39,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:39,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:39,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256567993] [2023-11-12 02:08:39,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:39,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:08:39,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:39,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:08:39,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:39,831 INFO L87 Difference]: Start difference. First operand 461 states and 748 transitions. Second operand has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 7 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:40,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:40,081 INFO L93 Difference]: Finished difference Result 1052 states and 1720 transitions. [2023-11-12 02:08:40,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:08:40,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 7 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2023-11-12 02:08:40,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:40,087 INFO L225 Difference]: With dead ends: 1052 [2023-11-12 02:08:40,088 INFO L226 Difference]: Without dead ends: 797 [2023-11-12 02:08:40,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:08:40,089 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 1688 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:40,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 2815 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:40,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2023-11-12 02:08:40,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 464. [2023-11-12 02:08:40,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 1.6241900647948164) internal successors, (752), 463 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:40,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 752 transitions. [2023-11-12 02:08:40,107 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 752 transitions. Word has length 211 [2023-11-12 02:08:40,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:40,108 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 752 transitions. [2023-11-12 02:08:40,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 7 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 752 transitions. [2023-11-12 02:08:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-12 02:08:40,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:40,112 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:40,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:08:40,112 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:40,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:40,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1560759797, now seen corresponding path program 1 times [2023-11-12 02:08:40,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:40,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684515954] [2023-11-12 02:08:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:40,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:41,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:41,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684515954] [2023-11-12 02:08:41,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684515954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:41,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:41,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:41,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078151542] [2023-11-12 02:08:41,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:41,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:41,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:41,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:41,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:41,889 INFO L87 Difference]: Start difference. First operand 464 states and 752 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:42,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:42,069 INFO L93 Difference]: Finished difference Result 996 states and 1626 transitions. [2023-11-12 02:08:42,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:08:42,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2023-11-12 02:08:42,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:42,075 INFO L225 Difference]: With dead ends: 996 [2023-11-12 02:08:42,075 INFO L226 Difference]: Without dead ends: 741 [2023-11-12 02:08:42,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:42,077 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 1848 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:42,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1848 Valid, 1672 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:42,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-11-12 02:08:42,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 487. [2023-11-12 02:08:42,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.623456790123457) internal successors, (789), 486 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 789 transitions. [2023-11-12 02:08:42,097 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 789 transitions. Word has length 211 [2023-11-12 02:08:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:42,098 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 789 transitions. [2023-11-12 02:08:42,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:42,099 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 789 transitions. [2023-11-12 02:08:42,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-12 02:08:42,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:42,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:42,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:08:42,103 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:42,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:42,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1320996671, now seen corresponding path program 1 times [2023-11-12 02:08:42,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:42,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381118915] [2023-11-12 02:08:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:42,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:43,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:43,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381118915] [2023-11-12 02:08:43,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381118915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:43,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:43,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:43,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694777288] [2023-11-12 02:08:43,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:43,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:08:43,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:43,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:08:43,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:43,943 INFO L87 Difference]: Start difference. First operand 487 states and 789 transitions. Second operand has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:44,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:44,213 INFO L93 Difference]: Finished difference Result 1054 states and 1721 transitions. [2023-11-12 02:08:44,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:08:44,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2023-11-12 02:08:44,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:44,219 INFO L225 Difference]: With dead ends: 1054 [2023-11-12 02:08:44,219 INFO L226 Difference]: Without dead ends: 799 [2023-11-12 02:08:44,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:08:44,221 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 1534 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 3699 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:44,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 3699 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:44,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-11-12 02:08:44,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 490. [2023-11-12 02:08:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.621676891615542) internal successors, (793), 489 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 793 transitions. [2023-11-12 02:08:44,241 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 793 transitions. Word has length 212 [2023-11-12 02:08:44,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:44,242 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 793 transitions. [2023-11-12 02:08:44,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:44,242 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 793 transitions. [2023-11-12 02:08:44,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-12 02:08:44,245 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:44,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:44,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:08:44,246 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:44,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:44,247 INFO L85 PathProgramCache]: Analyzing trace with hash -877095997, now seen corresponding path program 1 times [2023-11-12 02:08:44,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:44,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373816210] [2023-11-12 02:08:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:44,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:46,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:46,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373816210] [2023-11-12 02:08:46,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373816210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:46,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:46,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:46,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293417118] [2023-11-12 02:08:46,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:46,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:46,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:46,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:46,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:46,160 INFO L87 Difference]: Start difference. First operand 490 states and 793 transitions. Second operand has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:46,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:46,349 INFO L93 Difference]: Finished difference Result 1022 states and 1667 transitions. [2023-11-12 02:08:46,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:08:46,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2023-11-12 02:08:46,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:46,356 INFO L225 Difference]: With dead ends: 1022 [2023-11-12 02:08:46,356 INFO L226 Difference]: Without dead ends: 767 [2023-11-12 02:08:46,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:46,358 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 1869 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:46,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1869 Valid, 1710 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:46,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2023-11-12 02:08:46,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 513. [2023-11-12 02:08:46,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.62109375) internal successors, (830), 512 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:46,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 830 transitions. [2023-11-12 02:08:46,383 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 830 transitions. Word has length 212 [2023-11-12 02:08:46,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:46,384 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 830 transitions. [2023-11-12 02:08:46,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:46,384 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 830 transitions. [2023-11-12 02:08:46,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-12 02:08:46,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:46,388 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:46,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:08:46,389 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:46,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:46,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2057880775, now seen corresponding path program 1 times [2023-11-12 02:08:46,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:46,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254223790] [2023-11-12 02:08:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:46,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:48,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:48,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:48,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254223790] [2023-11-12 02:08:48,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254223790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:48,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:48,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:08:48,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374702005] [2023-11-12 02:08:48,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:48,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:08:48,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:48,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:08:48,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:48,103 INFO L87 Difference]: Start difference. First operand 513 states and 830 transitions. Second operand has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:48,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:48,367 INFO L93 Difference]: Finished difference Result 1056 states and 1722 transitions. [2023-11-12 02:08:48,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:08:48,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2023-11-12 02:08:48,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:48,374 INFO L225 Difference]: With dead ends: 1056 [2023-11-12 02:08:48,374 INFO L226 Difference]: Without dead ends: 801 [2023-11-12 02:08:48,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:08:48,379 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 1515 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 3358 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:48,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 3358 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:48,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2023-11-12 02:08:48,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 516. [2023-11-12 02:08:48,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 1.6194174757281554) internal successors, (834), 515 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:48,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 834 transitions. [2023-11-12 02:08:48,402 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 834 transitions. Word has length 213 [2023-11-12 02:08:48,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:48,403 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 834 transitions. [2023-11-12 02:08:48,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:48,403 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 834 transitions. [2023-11-12 02:08:48,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-12 02:08:48,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:48,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:48,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:08:48,407 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:48,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:48,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1398349253, now seen corresponding path program 1 times [2023-11-12 02:08:48,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:48,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981989032] [2023-11-12 02:08:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:48,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:50,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:50,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981989032] [2023-11-12 02:08:50,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981989032] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:08:50,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600320786] [2023-11-12 02:08:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:50,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:50,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:50,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:50,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:08:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:50,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-12 02:08:50,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:51,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:51,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600320786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:51,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:08:51,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-12 02:08:51,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265446246] [2023-11-12 02:08:51,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:51,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:51,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:51,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:51,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:08:51,134 INFO L87 Difference]: Start difference. First operand 516 states and 834 transitions. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:51,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:51,442 INFO L93 Difference]: Finished difference Result 1001 states and 1621 transitions. [2023-11-12 02:08:51,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:08:51,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2023-11-12 02:08:51,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:51,446 INFO L225 Difference]: With dead ends: 1001 [2023-11-12 02:08:51,446 INFO L226 Difference]: Without dead ends: 547 [2023-11-12 02:08:51,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:08:51,448 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 829 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:51,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1193 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:08:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-11-12 02:08:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 516. [2023-11-12 02:08:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 1.6155339805825242) internal successors, (832), 515 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 832 transitions. [2023-11-12 02:08:51,467 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 832 transitions. Word has length 213 [2023-11-12 02:08:51,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:51,468 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 832 transitions. [2023-11-12 02:08:51,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:51,468 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 832 transitions. [2023-11-12 02:08:51,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-12 02:08:51,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:51,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:51,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:51,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6d53c3-7e1c-4b69-9736-3838a812ffc8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-12 02:08:51,681 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:51,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:51,682 INFO L85 PathProgramCache]: Analyzing trace with hash 741501231, now seen corresponding path program 1 times [2023-11-12 02:08:51,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:51,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797821416] [2023-11-12 02:08:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:51,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:53,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:53,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797821416] [2023-11-12 02:08:53,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797821416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:53,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:53,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:08:53,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620403053] [2023-11-12 02:08:53,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:53,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:08:53,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:53,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:08:53,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:08:53,533 INFO L87 Difference]: Start difference. First operand 516 states and 832 transitions. Second operand has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:53,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:53,703 INFO L93 Difference]: Finished difference Result 1034 states and 1671 transitions. [2023-11-12 02:08:53,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:08:53,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2023-11-12 02:08:53,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:53,708 INFO L225 Difference]: With dead ends: 1034 [2023-11-12 02:08:53,709 INFO L226 Difference]: Without dead ends: 649 [2023-11-12 02:08:53,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:08:53,711 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 2147 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:53,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2147 Valid, 1519 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:53,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-11-12 02:08:53,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 516. [2023-11-12 02:08:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 1.6135922330097088) internal successors, (831), 515 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:53,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 831 transitions. [2023-11-12 02:08:53,733 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 831 transitions. Word has length 214 [2023-11-12 02:08:53,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:53,734 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 831 transitions. [2023-11-12 02:08:53,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:53,735 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 831 transitions. [2023-11-12 02:08:53,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-12 02:08:53,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:53,738 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:53,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:08:53,739 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:53,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:53,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1308907667, now seen corresponding path program 1 times [2023-11-12 02:08:53,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:53,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755414219] [2023-11-12 02:08:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:53,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat