./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem15_label18.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/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_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem15_label18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/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 32bit --witnessprinter.graph.data.programhash 5c095fadf59684254d69cca06d3c4bb1b9fa7c0b1f04f6f3052257e0be0a70d1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:09:31,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:09:31,927 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:09:31,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:09:31,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:09:31,961 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:09:31,962 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:09:31,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:09:31,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:09:31,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:09:31,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:09:31,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:09:31,967 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:09:31,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:09:31,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:09:31,969 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:09:31,970 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:09:31,971 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:09:31,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:09:31,972 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:09:31,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:09:31,974 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:09:31,975 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:09:31,976 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:09:31,976 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:09:31,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:09:31,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:09:31,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:09:31,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:09:31,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:09:31,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:09:31,981 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:09:31,981 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:09:31,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:09:31,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:09:31,982 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:09:31,982 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:09:31,983 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:09:31,983 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:09:31,983 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_3d87a6c8-a617-484e-89fa-3d53c57c298a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c095fadf59684254d69cca06d3c4bb1b9fa7c0b1f04f6f3052257e0be0a70d1 [2023-11-12 02:09:32,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:09:32,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:09:32,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:09:32,296 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:09:32,297 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:09:32,298 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/eca-rers2012/Problem15_label18.c [2023-11-12 02:09:35,446 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:09:35,880 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:09:35,882 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/sv-benchmarks/c/eca-rers2012/Problem15_label18.c [2023-11-12 02:09:35,908 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl/data/4d1fb026c/40f2c8d8526a4e06898eff079cccb494/FLAGee2591107 [2023-11-12 02:09:35,927 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl/data/4d1fb026c/40f2c8d8526a4e06898eff079cccb494 [2023-11-12 02:09:35,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:09:35,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:09:35,943 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:09:35,943 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:09:35,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:09:35,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:09:35" (1/1) ... [2023-11-12 02:09:35,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282c5abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:35, skipping insertion in model container [2023-11-12 02:09:35,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:09:35" (1/1) ... [2023-11-12 02:09:36,059 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:09:36,288 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_3d87a6c8-a617-484e-89fa-3d53c57c298a/sv-benchmarks/c/eca-rers2012/Problem15_label18.c[1259,1272] [2023-11-12 02:09:36,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:09:36,962 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:09:36,975 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_3d87a6c8-a617-484e-89fa-3d53c57c298a/sv-benchmarks/c/eca-rers2012/Problem15_label18.c[1259,1272] [2023-11-12 02:09:37,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:09:37,211 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:09:37,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:37 WrapperNode [2023-11-12 02:09:37,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:09:37,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:09:37,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:09:37,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:09:37,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:37" (1/1) ... [2023-11-12 02:09:37,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:37" (1/1) ... [2023-11-12 02:09:37,508 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1759 [2023-11-12 02:09:37,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:09:37,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:09:37,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:09:37,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:09:37,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:37" (1/1) ... [2023-11-12 02:09:37,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:37" (1/1) ... [2023-11-12 02:09:37,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:37" (1/1) ... [2023-11-12 02:09:37,537 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:37" (1/1) ... [2023-11-12 02:09:37,616 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:37" (1/1) ... [2023-11-12 02:09:37,640 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:37" (1/1) ... [2023-11-12 02:09:37,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:37" (1/1) ... [2023-11-12 02:09:37,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:37" (1/1) ... [2023-11-12 02:09:37,710 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:09:37,714 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:09:37,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:09:37,715 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:09:37,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:37" (1/1) ... [2023-11-12 02:09:37,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:09:37,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:37,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:09:37,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:09:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:09:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:09:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:09:37,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:09:37,925 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:09:37,927 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:09:41,364 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:09:41,376 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:09:41,376 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:09:41,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:41 BoogieIcfgContainer [2023-11-12 02:09:41,380 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:09:41,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:09:41,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:09:41,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:09:41,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:09:35" (1/3) ... [2023-11-12 02:09:41,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a35038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:41, skipping insertion in model container [2023-11-12 02:09:41,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:37" (2/3) ... [2023-11-12 02:09:41,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a35038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:41, skipping insertion in model container [2023-11-12 02:09:41,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:41" (3/3) ... [2023-11-12 02:09:41,390 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label18.c [2023-11-12 02:09:41,410 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:09:41,411 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:09:41,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:09:41,482 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;@4312dd90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:09:41,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:09:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 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 02:09:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:09:41,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:41,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:41,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:41,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:41,503 INFO L85 PathProgramCache]: Analyzing trace with hash 297966002, now seen corresponding path program 1 times [2023-11-12 02:09:41,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:41,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584869407] [2023-11-12 02:09:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:41,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,722 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 02:09:41,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:41,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584869407] [2023-11-12 02:09:41,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584869407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:41,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:41,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:09:41,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793070851] [2023-11-12 02:09:41,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:41,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:41,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:41,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:41,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:41,778 INFO L87 Difference]: Start difference. First operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 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 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 02:09:45,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:45,024 INFO L93 Difference]: Finished difference Result 1191 states and 2157 transitions. [2023-11-12 02:09:45,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:45,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-11-12 02:09:45,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:45,045 INFO L225 Difference]: With dead ends: 1191 [2023-11-12 02:09:45,045 INFO L226 Difference]: Without dead ends: 688 [2023-11-12 02:09:45,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:45,054 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 363 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:45,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 230 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-12 02:09:45,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-11-12 02:09:45,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 680. [2023-11-12 02:09:45,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 1.609720176730486) internal successors, (1093), 679 states have internal predecessors, (1093), 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 02:09:45,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1093 transitions. [2023-11-12 02:09:45,142 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1093 transitions. Word has length 8 [2023-11-12 02:09:45,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:45,142 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 1093 transitions. [2023-11-12 02:09:45,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 02:09:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1093 transitions. [2023-11-12 02:09:45,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-12 02:09:45,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:45,146 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:09:45,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:09:45,147 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:45,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1012538593, now seen corresponding path program 1 times [2023-11-12 02:09:45,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:45,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513507803] [2023-11-12 02:09:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:45,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:45,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:45,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513507803] [2023-11-12 02:09:45,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513507803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:45,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:45,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:09:45,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933108796] [2023-11-12 02:09:45,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:45,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:45,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:45,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:45,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:45,581 INFO L87 Difference]: Start difference. First operand 680 states and 1093 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 02:09:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:47,705 INFO L93 Difference]: Finished difference Result 1964 states and 3171 transitions. [2023-11-12 02:09:47,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:47,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 76 [2023-11-12 02:09:47,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:47,715 INFO L225 Difference]: With dead ends: 1964 [2023-11-12 02:09:47,715 INFO L226 Difference]: Without dead ends: 1286 [2023-11-12 02:09:47,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:47,720 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 282 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:47,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 360 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-12 02:09:47,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2023-11-12 02:09:47,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1281. [2023-11-12 02:09:47,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 1.3953125) internal successors, (1786), 1280 states have internal predecessors, (1786), 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 02:09:47,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1786 transitions. [2023-11-12 02:09:47,810 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1786 transitions. Word has length 76 [2023-11-12 02:09:47,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:47,812 INFO L495 AbstractCegarLoop]: Abstraction has 1281 states and 1786 transitions. [2023-11-12 02:09:47,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 02:09:47,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1786 transitions. [2023-11-12 02:09:47,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-12 02:09:47,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:47,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:47,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:09:47,819 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:47,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:47,821 INFO L85 PathProgramCache]: Analyzing trace with hash -515324979, now seen corresponding path program 1 times [2023-11-12 02:09:47,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:47,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549932413] [2023-11-12 02:09:47,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:47,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:48,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:48,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549932413] [2023-11-12 02:09:48,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549932413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:48,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:48,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:09:48,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324998827] [2023-11-12 02:09:48,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:48,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:48,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:48,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:48,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:48,075 INFO L87 Difference]: Start difference. First operand 1281 states and 1786 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 02:09:50,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:50,538 INFO L93 Difference]: Finished difference Result 3766 states and 5246 transitions. [2023-11-12 02:09:50,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:50,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2023-11-12 02:09:50,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:50,553 INFO L225 Difference]: With dead ends: 3766 [2023-11-12 02:09:50,553 INFO L226 Difference]: Without dead ends: 2487 [2023-11-12 02:09:50,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:50,564 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 320 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:50,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 637 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-12 02:09:50,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2023-11-12 02:09:50,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 2487. [2023-11-12 02:09:50,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2486 states have (on average 1.244569589702333) internal successors, (3094), 2486 states have internal predecessors, (3094), 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 02:09:50,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 3094 transitions. [2023-11-12 02:09:50,634 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 3094 transitions. Word has length 84 [2023-11-12 02:09:50,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:50,640 INFO L495 AbstractCegarLoop]: Abstraction has 2487 states and 3094 transitions. [2023-11-12 02:09:50,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 02:09:50,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 3094 transitions. [2023-11-12 02:09:50,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:09:50,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:50,650 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:09:50,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:09:50,651 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:50,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:50,653 INFO L85 PathProgramCache]: Analyzing trace with hash -928297951, now seen corresponding path program 1 times [2023-11-12 02:09:50,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:50,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020823084] [2023-11-12 02:09:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:50,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:50,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:50,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:50,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020823084] [2023-11-12 02:09:50,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020823084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:50,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:50,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:09:50,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959952770] [2023-11-12 02:09:50,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:50,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:50,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:50,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:50,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:50,878 INFO L87 Difference]: Start difference. First operand 2487 states and 3094 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 02:09:53,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:53,533 INFO L93 Difference]: Finished difference Result 6173 states and 7859 transitions. [2023-11-12 02:09:53,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:53,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2023-11-12 02:09:53,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:53,556 INFO L225 Difference]: With dead ends: 6173 [2023-11-12 02:09:53,556 INFO L226 Difference]: Without dead ends: 3688 [2023-11-12 02:09:53,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:53,561 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 233 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:53,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 364 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-12 02:09:53,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3688 states. [2023-11-12 02:09:53,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3688 to 3387. [2023-11-12 02:09:53,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3387 states, 3386 states have (on average 1.2114589486119314) internal successors, (4102), 3386 states have internal predecessors, (4102), 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 02:09:53,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 4102 transitions. [2023-11-12 02:09:53,667 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 4102 transitions. Word has length 90 [2023-11-12 02:09:53,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:53,668 INFO L495 AbstractCegarLoop]: Abstraction has 3387 states and 4102 transitions. [2023-11-12 02:09:53,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 02:09:53,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 4102 transitions. [2023-11-12 02:09:53,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-12 02:09:53,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:53,672 INFO L195 NwaCegarLoop]: trace histogram [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 02:09:53,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:09:53,672 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:53,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash -119574014, now seen corresponding path program 1 times [2023-11-12 02:09:53,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:53,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634280571] [2023-11-12 02:09:53,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:53,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:53,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:53,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634280571] [2023-11-12 02:09:53,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634280571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:53,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:53,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:09:53,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276837069] [2023-11-12 02:09:53,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:53,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:53,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:53,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:53,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:53,986 INFO L87 Difference]: Start difference. First operand 3387 states and 4102 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 02:09:56,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:56,127 INFO L93 Difference]: Finished difference Result 7974 states and 9877 transitions. [2023-11-12 02:09:56,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:56,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 204 [2023-11-12 02:09:56,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:56,154 INFO L225 Difference]: With dead ends: 7974 [2023-11-12 02:09:56,154 INFO L226 Difference]: Without dead ends: 4589 [2023-11-12 02:09:56,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:56,163 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 320 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:56,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 614 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-12 02:09:56,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4589 states. [2023-11-12 02:09:56,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4589 to 4587. [2023-11-12 02:09:56,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4587 states, 4586 states have (on average 1.181639773222852) internal successors, (5419), 4586 states have internal predecessors, (5419), 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 02:09:56,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 5419 transitions. [2023-11-12 02:09:56,268 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 5419 transitions. Word has length 204 [2023-11-12 02:09:56,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:56,270 INFO L495 AbstractCegarLoop]: Abstraction has 4587 states and 5419 transitions. [2023-11-12 02:09:56,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 02:09:56,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 5419 transitions. [2023-11-12 02:09:56,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-11-12 02:09:56,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:56,277 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:56,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:09:56,278 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:56,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:56,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1284158314, now seen corresponding path program 1 times [2023-11-12 02:09:56,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:56,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350814806] [2023-11-12 02:09:56,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:56,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:56,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:56,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350814806] [2023-11-12 02:09:56,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350814806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:56,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:56,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:09:56,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597016912] [2023-11-12 02:09:56,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:56,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:56,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:56,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:56,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:56,766 INFO L87 Difference]: Start difference. First operand 4587 states and 5419 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 02:09:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:58,922 INFO L93 Difference]: Finished difference Result 10374 states and 12513 transitions. [2023-11-12 02:09:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:58,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 290 [2023-11-12 02:09:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:58,954 INFO L225 Difference]: With dead ends: 10374 [2023-11-12 02:09:58,954 INFO L226 Difference]: Without dead ends: 5789 [2023-11-12 02:09:58,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:58,962 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 321 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:58,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 630 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-12 02:09:58,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5789 states. [2023-11-12 02:09:59,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5789 to 5485. [2023-11-12 02:09:59,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5485 states, 5484 states have (on average 1.174325309992706) internal successors, (6440), 5484 states have internal predecessors, (6440), 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 02:09:59,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 6440 transitions. [2023-11-12 02:09:59,088 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 6440 transitions. Word has length 290 [2023-11-12 02:09:59,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:59,089 INFO L495 AbstractCegarLoop]: Abstraction has 5485 states and 6440 transitions. [2023-11-12 02:09:59,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 02:09:59,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 6440 transitions. [2023-11-12 02:09:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-11-12 02:09:59,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:59,097 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-12 02:09:59,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:09:59,097 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:59,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:59,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1691872919, now seen corresponding path program 1 times [2023-11-12 02:09:59,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:59,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076214325] [2023-11-12 02:09:59,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:59,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:10:00,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:00,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076214325] [2023-11-12 02:10:00,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076214325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:00,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:00,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:10:00,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318112384] [2023-11-12 02:10:00,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:00,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:00,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:00,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:00,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:00,235 INFO L87 Difference]: Start difference. First operand 5485 states and 6440 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 2 states have internal predecessors, (363), 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 02:10:02,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:10:02,723 INFO L93 Difference]: Finished difference Result 11267 states and 13189 transitions. [2023-11-12 02:10:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:02,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 2 states have internal predecessors, (363), 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 368 [2023-11-12 02:10:02,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:10:02,754 INFO L225 Difference]: With dead ends: 11267 [2023-11-12 02:10:02,754 INFO L226 Difference]: Without dead ends: 5784 [2023-11-12 02:10:02,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:02,761 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:10:02,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 354 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-12 02:10:02,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5784 states. [2023-11-12 02:10:02,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5784 to 5784. [2023-11-12 02:10:02,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 5783 states have (on average 1.1663496455127096) internal successors, (6745), 5783 states have internal predecessors, (6745), 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 02:10:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 6745 transitions. [2023-11-12 02:10:02,881 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 6745 transitions. Word has length 368 [2023-11-12 02:10:02,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:10:02,882 INFO L495 AbstractCegarLoop]: Abstraction has 5784 states and 6745 transitions. [2023-11-12 02:10:02,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 2 states have internal predecessors, (363), 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 02:10:02,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 6745 transitions. [2023-11-12 02:10:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-11-12 02:10:02,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:10:02,892 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-12 02:10:02,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:10:02,892 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:10:02,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:02,893 INFO L85 PathProgramCache]: Analyzing trace with hash 29452629, now seen corresponding path program 1 times [2023-11-12 02:10:02,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:02,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730561004] [2023-11-12 02:10:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:02,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-12 02:10:03,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:03,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730561004] [2023-11-12 02:10:03,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730561004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:03,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:03,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:10:03,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084982157] [2023-11-12 02:10:03,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:03,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:03,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:03,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:03,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:03,515 INFO L87 Difference]: Start difference. First operand 5784 states and 6745 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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 02:10:06,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:10:06,426 INFO L93 Difference]: Finished difference Result 14556 states and 17044 transitions. [2023-11-12 02:10:06,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:06,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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 459 [2023-11-12 02:10:06,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:10:06,469 INFO L225 Difference]: With dead ends: 14556 [2023-11-12 02:10:06,469 INFO L226 Difference]: Without dead ends: 9073 [2023-11-12 02:10:06,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:06,478 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 148 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:10:06,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 315 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-12 02:10:06,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9073 states. [2023-11-12 02:10:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9073 to 7578. [2023-11-12 02:10:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7578 states, 7577 states have (on average 1.1483436716378514) internal successors, (8701), 7577 states have internal predecessors, (8701), 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 02:10:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7578 states to 7578 states and 8701 transitions. [2023-11-12 02:10:06,689 INFO L78 Accepts]: Start accepts. Automaton has 7578 states and 8701 transitions. Word has length 459 [2023-11-12 02:10:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:10:06,690 INFO L495 AbstractCegarLoop]: Abstraction has 7578 states and 8701 transitions. [2023-11-12 02:10:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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 02:10:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 7578 states and 8701 transitions. [2023-11-12 02:10:06,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-11-12 02:10:06,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:10:06,703 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-12 02:10:06,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:10:06,704 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:10:06,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:06,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1475515835, now seen corresponding path program 1 times [2023-11-12 02:10:06,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:06,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136634720] [2023-11-12 02:10:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:06,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2023-11-12 02:10:07,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:07,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136634720] [2023-11-12 02:10:07,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136634720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:07,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:07,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:10:07,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976874727] [2023-11-12 02:10:07,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:07,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:07,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:07,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:07,158 INFO L87 Difference]: Start difference. First operand 7578 states and 8701 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 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 02:10:09,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:10:09,437 INFO L93 Difference]: Finished difference Result 17246 states and 20051 transitions. [2023-11-12 02:10:09,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:09,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 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 492 [2023-11-12 02:10:09,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:10:09,466 INFO L225 Difference]: With dead ends: 17246 [2023-11-12 02:10:09,466 INFO L226 Difference]: Without dead ends: 9969 [2023-11-12 02:10:09,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:09,475 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 409 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:10:09,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 447 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-12 02:10:09,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9969 states. [2023-11-12 02:10:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9969 to 9969. [2023-11-12 02:10:09,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 1.1498796147672552) internal successors, (11462), 9968 states have internal predecessors, (11462), 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 02:10:09,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 11462 transitions. [2023-11-12 02:10:09,650 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 11462 transitions. Word has length 492 [2023-11-12 02:10:09,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:10:09,652 INFO L495 AbstractCegarLoop]: Abstraction has 9969 states and 11462 transitions. [2023-11-12 02:10:09,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 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 02:10:09,653 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 11462 transitions. [2023-11-12 02:10:09,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-11-12 02:10:09,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:10:09,665 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-12 02:10:09,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:10:09,665 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:10:09,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:09,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1163723919, now seen corresponding path program 1 times [2023-11-12 02:10:09,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:09,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255966505] [2023-11-12 02:10:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:09,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-11-12 02:10:10,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:10,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255966505] [2023-11-12 02:10:10,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255966505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:10,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:10,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:10:10,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590385046] [2023-11-12 02:10:10,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:10,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:10,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:10,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:10,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:10,440 INFO L87 Difference]: Start difference. First operand 9969 states and 11462 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 02:10:13,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:10:13,059 INFO L93 Difference]: Finished difference Result 24136 states and 28000 transitions. [2023-11-12 02:10:13,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:13,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 496 [2023-11-12 02:10:13,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:10:13,094 INFO L225 Difference]: With dead ends: 24136 [2023-11-12 02:10:13,094 INFO L226 Difference]: Without dead ends: 14468 [2023-11-12 02:10:13,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:13,106 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 248 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:10:13,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 619 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-12 02:10:13,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14468 states. [2023-11-12 02:10:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14468 to 14457. [2023-11-12 02:10:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14457 states, 14456 states have (on average 1.1342003320420586) internal successors, (16396), 14456 states have internal predecessors, (16396), 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 02:10:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14457 states to 14457 states and 16396 transitions. [2023-11-12 02:10:13,404 INFO L78 Accepts]: Start accepts. Automaton has 14457 states and 16396 transitions. Word has length 496 [2023-11-12 02:10:13,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:10:13,405 INFO L495 AbstractCegarLoop]: Abstraction has 14457 states and 16396 transitions. [2023-11-12 02:10:13,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 02:10:13,405 INFO L276 IsEmpty]: Start isEmpty. Operand 14457 states and 16396 transitions. [2023-11-12 02:10:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2023-11-12 02:10:13,420 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:10:13,422 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-12 02:10:13,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:10:13,423 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:10:13,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:13,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2086034389, now seen corresponding path program 1 times [2023-11-12 02:10:13,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:13,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435145146] [2023-11-12 02:10:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:13,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 335 proven. 190 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:10:14,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:14,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435145146] [2023-11-12 02:10:14,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435145146] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:10:14,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247766025] [2023-11-12 02:10:14,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:14,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:10:14,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:10:14,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:10:14,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d87a6c8-a617-484e-89fa-3d53c57c298a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:10:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:14,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:10:15,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:10:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:10:18,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:10:18,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247766025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:18,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:10:18,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-12 02:10:18,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786430336] [2023-11-12 02:10:18,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:18,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:18,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:18,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:18,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:10:18,519 INFO L87 Difference]: Start difference. First operand 14457 states and 16396 transitions. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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)