./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 cabd2cc9368a1fd53faf27e2a7a4ccdcdf6a17474587802b8d08bd6693974fab --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:03:02,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:03:02,351 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:03:02,356 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:03:02,356 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:03:02,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:03:02,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:03:02,382 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:03:02,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:03:02,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:03:02,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:03:02,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:03:02,385 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:03:02,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:03:02,386 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:03:02,387 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:03:02,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:03:02,388 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:03:02,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:03:02,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:03:02,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:03:02,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:03:02,391 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:03:02,392 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:03:02,392 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:03:02,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:03:02,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:03:02,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:03:02,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:03:02,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:03:02,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:03:02,396 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:03:02,397 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:03:02,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:03:02,398 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:03:02,398 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:03:02,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:03:02,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:03:02,400 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:03:02,400 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_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cabd2cc9368a1fd53faf27e2a7a4ccdcdf6a17474587802b8d08bd6693974fab [2023-11-06 23:03:02,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:03:02,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:03:02,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:03:02,723 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:03:02,723 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:03:02,725 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/eca-rers2012/Problem12_label50.c [2023-11-06 23:03:05,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:03:06,439 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:03:06,440 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/sv-benchmarks/c/eca-rers2012/Problem12_label50.c [2023-11-06 23:03:06,488 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP/data/cf58dcfd3/412a8abae11146068c3f4764cf0baf84/FLAGa19d7031d [2023-11-06 23:03:06,506 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP/data/cf58dcfd3/412a8abae11146068c3f4764cf0baf84 [2023-11-06 23:03:06,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:03:06,515 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:03:06,517 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:03:06,517 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:03:06,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:03:06,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:03:06" (1/1) ... [2023-11-06 23:03:06,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3761befc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:06, skipping insertion in model container [2023-11-06 23:03:06,525 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:03:06" (1/1) ... [2023-11-06 23:03:06,687 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:03:06,926 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_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/sv-benchmarks/c/eca-rers2012/Problem12_label50.c[2573,2586] [2023-11-06 23:03:08,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:03:08,057 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:03:08,076 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_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/sv-benchmarks/c/eca-rers2012/Problem12_label50.c[2573,2586] [2023-11-06 23:03:08,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:03:08,715 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:03:08,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:08 WrapperNode [2023-11-06 23:03:08,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:03:08,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:03:08,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:03:08,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:03:08,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:08" (1/1) ... [2023-11-06 23:03:08,784 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:08" (1/1) ... [2023-11-06 23:03:09,110 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4758 [2023-11-06 23:03:09,110 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:03:09,111 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:03:09,111 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:03:09,111 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:03:09,120 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:08" (1/1) ... [2023-11-06 23:03:09,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:08" (1/1) ... [2023-11-06 23:03:09,170 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:08" (1/1) ... [2023-11-06 23:03:09,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:08" (1/1) ... [2023-11-06 23:03:09,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:08" (1/1) ... [2023-11-06 23:03:09,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:08" (1/1) ... [2023-11-06 23:03:09,537 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:08" (1/1) ... [2023-11-06 23:03:09,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:08" (1/1) ... [2023-11-06 23:03:09,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:03:09,697 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:03:09,697 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:03:09,697 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:03:09,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:08" (1/1) ... [2023-11-06 23:03:09,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:03:09,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:09,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:09,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b57e8dd0-f43e-48ff-96be-30fcbbee7b0e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:03:09,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:03:09,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:03:09,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:03:09,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:03:10,004 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:03:10,007 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:03:15,231 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:03:15,252 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:03:15,252 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:03:15,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:03:15 BoogieIcfgContainer [2023-11-06 23:03:15,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:03:15,261 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:03:15,261 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:03:15,265 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:03:15,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:03:06" (1/3) ... [2023-11-06 23:03:15,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7749a870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:03:15, skipping insertion in model container [2023-11-06 23:03:15,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:08" (2/3) ... [2023-11-06 23:03:15,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7749a870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:03:15, skipping insertion in model container [2023-11-06 23:03:15,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:03:15" (3/3) ... [2023-11-06 23:03:15,271 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label50.c [2023-11-06 23:03:15,289 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:03:15,290 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:03:15,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:03:15,393 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=LoopsAndPotentialCycles, 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;@5b5301f0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:03:15,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:03:15,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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) [2023-11-06 23:03:15,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 23:03:15,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:15,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:15,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:15,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:15,415 INFO L85 PathProgramCache]: Analyzing trace with hash 567305786, now seen corresponding path program 1 times [2023-11-06 23:03:15,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:15,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565988] [2023-11-06 23:03:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:15,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:15,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:15,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:15,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565988] [2023-11-06 23:03:15,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:15,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:15,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:03:15,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486263521] [2023-11-06 23:03:15,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:15,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:15,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:15,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:15,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:15,813 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2023-11-06 23:03:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:20,813 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2023-11-06 23:03:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:20,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2023-11-06 23:03:20,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:20,843 INFO L225 Difference]: With dead ends: 2388 [2023-11-06 23:03:20,843 INFO L226 Difference]: Without dead ends: 1506 [2023-11-06 23:03:20,851 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 [2023-11-06 23:03:20,863 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 818 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:20,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 112 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-06 23:03:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2023-11-06 23:03:21,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2023-11-06 23:03:21,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.86578073089701) internal successors, (2808), 1505 states have internal predecessors, (2808), 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) [2023-11-06 23:03:21,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2808 transitions. [2023-11-06 23:03:21,025 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2808 transitions. Word has length 18 [2023-11-06 23:03:21,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:21,026 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2808 transitions. [2023-11-06 23:03:21,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2023-11-06 23:03:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2808 transitions. [2023-11-06 23:03:21,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-06 23:03:21,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:21,032 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 23:03:21,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:03:21,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:21,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:21,034 INFO L85 PathProgramCache]: Analyzing trace with hash -995923528, now seen corresponding path program 1 times [2023-11-06 23:03:21,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:21,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246578614] [2023-11-06 23:03:21,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:21,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:21,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:21,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:21,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246578614] [2023-11-06 23:03:21,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246578614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:21,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:21,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:03:21,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971695977] [2023-11-06 23:03:21,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:21,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:03:21,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:21,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:03:21,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:03:21,529 INFO L87 Difference]: Start difference. First operand 1506 states and 2808 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-11-06 23:03:28,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:28,600 INFO L93 Difference]: Finished difference Result 5271 states and 9796 transitions. [2023-11-06 23:03:28,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:03:28,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2023-11-06 23:03:28,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:28,624 INFO L225 Difference]: With dead ends: 5271 [2023-11-06 23:03:28,625 INFO L226 Difference]: Without dead ends: 3767 [2023-11-06 23:03:28,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:03:28,631 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 2310 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 1529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 5141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1529 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:28,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 199 Invalid, 5141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1529 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-11-06 23:03:28,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2023-11-06 23:03:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3759. [2023-11-06 23:03:28,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.6053751995742416) internal successors, (6033), 3758 states have internal predecessors, (6033), 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) [2023-11-06 23:03:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 6033 transitions. [2023-11-06 23:03:28,740 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 6033 transitions. Word has length 83 [2023-11-06 23:03:28,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:28,741 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 6033 transitions. [2023-11-06 23:03:28,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-11-06 23:03:28,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 6033 transitions. [2023-11-06 23:03:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 23:03:28,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:28,753 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:28,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:03:28,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:28,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:28,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1765214276, now seen corresponding path program 1 times [2023-11-06 23:03:28,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:28,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861937495] [2023-11-06 23:03:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:28,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:29,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:29,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861937495] [2023-11-06 23:03:29,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861937495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:29,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:29,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:03:29,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871061113] [2023-11-06 23:03:29,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:29,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:03:29,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:29,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:03:29,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:03:29,508 INFO L87 Difference]: Start difference. First operand 3759 states and 6033 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 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) [2023-11-06 23:03:34,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:34,904 INFO L93 Difference]: Finished difference Result 10557 states and 17374 transitions. [2023-11-06 23:03:34,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:03:34,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 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 179 [2023-11-06 23:03:34,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:34,947 INFO L225 Difference]: With dead ends: 10557 [2023-11-06 23:03:34,947 INFO L226 Difference]: Without dead ends: 6763 [2023-11-06 23:03:34,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:03:34,955 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 688 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3804 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 4468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:34,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 712 Invalid, 4468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3804 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-06 23:03:34,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2023-11-06 23:03:35,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2023-11-06 23:03:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.3569949719018042) internal successors, (9176), 6762 states have internal predecessors, (9176), 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) [2023-11-06 23:03:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9176 transitions. [2023-11-06 23:03:35,176 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 9176 transitions. Word has length 179 [2023-11-06 23:03:35,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:35,177 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 9176 transitions. [2023-11-06 23:03:35,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 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) [2023-11-06 23:03:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 9176 transitions. [2023-11-06 23:03:35,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-11-06 23:03:35,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:35,181 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-06 23:03:35,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:03:35,182 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:35,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:35,183 INFO L85 PathProgramCache]: Analyzing trace with hash 93980053, now seen corresponding path program 1 times [2023-11-06 23:03:35,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:35,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696829568] [2023-11-06 23:03:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:35,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-06 23:03:35,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:35,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696829568] [2023-11-06 23:03:35,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696829568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:35,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:35,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:03:35,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209625323] [2023-11-06 23:03:35,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:35,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:35,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:35,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:35,544 INFO L87 Difference]: Start difference. First operand 6763 states and 9176 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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) [2023-11-06 23:03:39,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:39,563 INFO L93 Difference]: Finished difference Result 16530 states and 23476 transitions. [2023-11-06 23:03:39,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:39,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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 249 [2023-11-06 23:03:39,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:39,616 INFO L225 Difference]: With dead ends: 16530 [2023-11-06 23:03:39,616 INFO L226 Difference]: Without dead ends: 9769 [2023-11-06 23:03:39,625 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 [2023-11-06 23:03:39,627 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:39,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 390 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-06 23:03:39,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2023-11-06 23:03:39,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9767. [2023-11-06 23:03:39,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.3652467745238583) internal successors, (13333), 9766 states have internal predecessors, (13333), 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) [2023-11-06 23:03:39,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13333 transitions. [2023-11-06 23:03:39,925 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13333 transitions. Word has length 249 [2023-11-06 23:03:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:39,927 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 13333 transitions. [2023-11-06 23:03:39,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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) [2023-11-06 23:03:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13333 transitions. [2023-11-06 23:03:39,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-11-06 23:03:39,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:39,936 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-06 23:03:39,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:03:39,936 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:39,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:39,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1745448123, now seen corresponding path program 1 times [2023-11-06 23:03:39,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:39,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382119491] [2023-11-06 23:03:39,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:39,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-06 23:03:40,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:40,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382119491] [2023-11-06 23:03:40,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382119491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:40,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:40,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:03:40,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827970960] [2023-11-06 23:03:40,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:40,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:40,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:40,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:40,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:40,351 INFO L87 Difference]: Start difference. First operand 9767 states and 13333 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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) [2023-11-06 23:03:44,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:44,239 INFO L93 Difference]: Finished difference Result 27042 states and 37583 transitions. [2023-11-06 23:03:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:44,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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 281 [2023-11-06 23:03:44,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:44,304 INFO L225 Difference]: With dead ends: 27042 [2023-11-06 23:03:44,305 INFO L226 Difference]: Without dead ends: 17277 [2023-11-06 23:03:44,314 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 [2023-11-06 23:03:44,317 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 860 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 860 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:44,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 427 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [860 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-06 23:03:44,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2023-11-06 23:03:44,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 15775. [2023-11-06 23:03:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.2815392417902878) internal successors, (20215), 15774 states have internal predecessors, (20215), 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) [2023-11-06 23:03:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 20215 transitions. [2023-11-06 23:03:44,670 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 20215 transitions. Word has length 281 [2023-11-06 23:03:44,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:44,671 INFO L495 AbstractCegarLoop]: Abstraction has 15775 states and 20215 transitions. [2023-11-06 23:03:44,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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) [2023-11-06 23:03:44,672 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 20215 transitions. [2023-11-06 23:03:44,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-06 23:03:44,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:44,681 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:44,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:03:44,682 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:44,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:44,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1626576736, now seen corresponding path program 1 times [2023-11-06 23:03:44,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:44,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162984807] [2023-11-06 23:03:44,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:44,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-06 23:03:46,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:46,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162984807] [2023-11-06 23:03:46,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162984807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:46,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:46,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:03:46,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559948084] [2023-11-06 23:03:46,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:46,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:46,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:46,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:46,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:46,141 INFO L87 Difference]: Start difference. First operand 15775 states and 20215 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-11-06 23:03:50,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:50,542 INFO L93 Difference]: Finished difference Result 39809 states and 52168 transitions. [2023-11-06 23:03:50,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:50,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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 360 [2023-11-06 23:03:50,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:50,593 INFO L225 Difference]: With dead ends: 39809 [2023-11-06 23:03:50,593 INFO L226 Difference]: Without dead ends: 24036 [2023-11-06 23:03:50,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:50,612 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 776 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 1093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:50,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 142 Invalid, 3130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1093 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-06 23:03:50,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24036 states. [2023-11-06 23:03:50,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24036 to 22534. [2023-11-06 23:03:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22534 states, 22533 states have (on average 1.3109661385523455) internal successors, (29540), 22533 states have internal predecessors, (29540), 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) [2023-11-06 23:03:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22534 states to 22534 states and 29540 transitions. [2023-11-06 23:03:51,159 INFO L78 Accepts]: Start accepts. Automaton has 22534 states and 29540 transitions. Word has length 360 [2023-11-06 23:03:51,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:51,159 INFO L495 AbstractCegarLoop]: Abstraction has 22534 states and 29540 transitions. [2023-11-06 23:03:51,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-11-06 23:03:51,160 INFO L276 IsEmpty]: Start isEmpty. Operand 22534 states and 29540 transitions. [2023-11-06 23:03:51,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-11-06 23:03:51,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:51,174 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 23:03:51,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:03:51,175 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:51,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:51,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2120391270, now seen corresponding path program 1 times [2023-11-06 23:03:51,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:51,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383934220] [2023-11-06 23:03:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:51,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-06 23:03:51,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383934220] [2023-11-06 23:03:51,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383934220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:51,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:51,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:03:51,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885933056] [2023-11-06 23:03:51,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:51,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:51,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:51,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:51,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:51,668 INFO L87 Difference]: Start difference. First operand 22534 states and 29540 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2023-11-06 23:03:55,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:55,806 INFO L93 Difference]: Finished difference Result 55580 states and 72868 transitions. [2023-11-06 23:03:55,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:55,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 377 [2023-11-06 23:03:55,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:55,867 INFO L225 Difference]: With dead ends: 55580 [2023-11-06 23:03:55,867 INFO L226 Difference]: Without dead ends: 33048 [2023-11-06 23:03:55,890 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 [2023-11-06 23:03:55,891 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 734 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:55,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 217 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-06 23:03:55,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33048 states. [2023-11-06 23:03:56,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33048 to 32297. [2023-11-06 23:03:56,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32297 states, 32296 states have (on average 1.2960738171909834) internal successors, (41858), 32296 states have internal predecessors, (41858), 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) [2023-11-06 23:03:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32297 states to 32297 states and 41858 transitions. [2023-11-06 23:03:56,463 INFO L78 Accepts]: Start accepts. Automaton has 32297 states and 41858 transitions. Word has length 377 [2023-11-06 23:03:56,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:56,464 INFO L495 AbstractCegarLoop]: Abstraction has 32297 states and 41858 transitions. [2023-11-06 23:03:56,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2023-11-06 23:03:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand 32297 states and 41858 transitions. [2023-11-06 23:03:56,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2023-11-06 23:03:56,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:56,476 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 23:03:56,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:03:56,477 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:56,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:56,477 INFO L85 PathProgramCache]: Analyzing trace with hash -443370662, now seen corresponding path program 1 times [2023-11-06 23:03:56,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:56,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051076075] [2023-11-06 23:03:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:56,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-06 23:03:56,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:56,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051076075] [2023-11-06 23:03:56,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051076075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:56,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:56,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:03:56,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633890710] [2023-11-06 23:03:56,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:56,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:56,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:56,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:56,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:56,822 INFO L87 Difference]: Start difference. First operand 32297 states and 41858 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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) [2023-11-06 23:04:01,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:04:01,410 INFO L93 Difference]: Finished difference Result 87873 states and 115307 transitions. [2023-11-06 23:04:01,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:01,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 388 [2023-11-06 23:04:01,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:04:01,491 INFO L225 Difference]: With dead ends: 87873 [2023-11-06 23:04:01,492 INFO L226 Difference]: Without dead ends: 55578 [2023-11-06 23:04:01,510 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 [2023-11-06 23:04:01,511 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 720 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:04:01,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 421 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-06 23:04:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55578 states. [2023-11-06 23:04:02,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55578 to 54076. [2023-11-06 23:04:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54076 states, 54075 states have (on average 1.2651132686084143) internal successors, (68411), 54075 states have internal predecessors, (68411), 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) [2023-11-06 23:04:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54076 states to 54076 states and 68411 transitions. [2023-11-06 23:04:02,574 INFO L78 Accepts]: Start accepts. Automaton has 54076 states and 68411 transitions. Word has length 388 [2023-11-06 23:04:02,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:04:02,575 INFO L495 AbstractCegarLoop]: Abstraction has 54076 states and 68411 transitions. [2023-11-06 23:04:02,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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) [2023-11-06 23:04:02,576 INFO L276 IsEmpty]: Start isEmpty. Operand 54076 states and 68411 transitions. [2023-11-06 23:04:02,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-11-06 23:04:02,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:04:02,590 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:02,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:04:02,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:04:02,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1911246859, now seen corresponding path program 1 times [2023-11-06 23:04:02,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:02,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353400271] [2023-11-06 23:04:02,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:02,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-11-06 23:04:03,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:03,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353400271] [2023-11-06 23:04:03,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353400271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:03,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:03,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:04:03,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544930337] [2023-11-06 23:04:03,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:03,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:04:03,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:03,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:04:03,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:03,420 INFO L87 Difference]: Start difference. First operand 54076 states and 68411 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2023-11-06 23:04:07,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:04:07,609 INFO L93 Difference]: Finished difference Result 132933 states and 167515 transitions. [2023-11-06 23:04:07,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:07,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 402 [2023-11-06 23:04:07,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:04:07,699 INFO L225 Difference]: With dead ends: 132933 [2023-11-06 23:04:07,699 INFO L226 Difference]: Without dead ends: 78859 [2023-11-06 23:04:07,725 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 [2023-11-06 23:04:07,726 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 663 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:04:07,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1339 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-06 23:04:07,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78859 states. [2023-11-06 23:04:08,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78859 to 75104. [2023-11-06 23:04:08,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75104 states, 75103 states have (on average 1.2270082420143003) internal successors, (92152), 75103 states have internal predecessors, (92152), 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) [2023-11-06 23:04:09,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75104 states to 75104 states and 92152 transitions. [2023-11-06 23:04:09,066 INFO L78 Accepts]: Start accepts. Automaton has 75104 states and 92152 transitions. Word has length 402 [2023-11-06 23:04:09,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:04:09,067 INFO L495 AbstractCegarLoop]: Abstraction has 75104 states and 92152 transitions. [2023-11-06 23:04:09,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2023-11-06 23:04:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 75104 states and 92152 transitions. [2023-11-06 23:04:09,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-11-06 23:04:09,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:04:09,082 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:09,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:04:09,083 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:04:09,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:09,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1756855734, now seen corresponding path program 1 times [2023-11-06 23:04:09,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:09,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170250407] [2023-11-06 23:04:09,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:09,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-06 23:04:10,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:10,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170250407] [2023-11-06 23:04:10,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170250407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:10,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:10,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:04:10,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132440035] [2023-11-06 23:04:10,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:10,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:04:10,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:10,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:04:10,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:10,419 INFO L87 Difference]: Start difference. First operand 75104 states and 92152 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2023-11-06 23:04:14,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:04:14,601 INFO L93 Difference]: Finished difference Result 162973 states and 198921 transitions. [2023-11-06 23:04:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:14,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 414 [2023-11-06 23:04:14,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:04:14,714 INFO L225 Difference]: With dead ends: 162973 [2023-11-06 23:04:14,714 INFO L226 Difference]: Without dead ends: 87871 [2023-11-06 23:04:14,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:14,736 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 803 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:04:14,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 912 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2138 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-06 23:04:14,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87871 states. [2023-11-06 23:04:15,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87871 to 82614. [2023-11-06 23:04:15,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82614 states, 82613 states have (on average 1.1837725297471342) internal successors, (97795), 82613 states have internal predecessors, (97795), 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) [2023-11-06 23:04:16,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82614 states to 82614 states and 97795 transitions. [2023-11-06 23:04:16,009 INFO L78 Accepts]: Start accepts. Automaton has 82614 states and 97795 transitions. Word has length 414 [2023-11-06 23:04:16,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:04:16,010 INFO L495 AbstractCegarLoop]: Abstraction has 82614 states and 97795 transitions. [2023-11-06 23:04:16,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2023-11-06 23:04:16,010 INFO L276 IsEmpty]: Start isEmpty. Operand 82614 states and 97795 transitions. [2023-11-06 23:04:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-11-06 23:04:16,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:04:16,043 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:16,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:04:16,043 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:04:16,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash 890396637, now seen corresponding path program 1 times [2023-11-06 23:04:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:16,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475251900] [2023-11-06 23:04:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:16,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 467 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-06 23:04:17,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:17,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475251900] [2023-11-06 23:04:17,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475251900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:17,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:17,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:04:17,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122926598] [2023-11-06 23:04:17,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:17,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:04:17,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:17,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:04:17,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:17,087 INFO L87 Difference]: Start difference. First operand 82614 states and 97795 transitions. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2023-11-06 23:04:21,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:04:21,781 INFO L93 Difference]: Finished difference Result 193764 states and 229916 transitions. [2023-11-06 23:04:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:21,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 534 [2023-11-06 23:04:21,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:04:21,954 INFO L225 Difference]: With dead ends: 193764 [2023-11-06 23:04:21,954 INFO L226 Difference]: Without dead ends: 111152 [2023-11-06 23:04:21,985 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 [2023-11-06 23:04:21,986 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 584 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:04:21,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1267 Invalid, 2848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 23:04:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111152 states. [2023-11-06 23:04:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111152 to 100638. [2023-11-06 23:04:23,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100638 states, 100637 states have (on average 1.1604777566898854) internal successors, (116787), 100637 states have internal predecessors, (116787), 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) [2023-11-06 23:04:23,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100638 states to 100638 states and 116787 transitions. [2023-11-06 23:04:23,627 INFO L78 Accepts]: Start accepts. Automaton has 100638 states and 116787 transitions. Word has length 534 [2023-11-06 23:04:23,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:04:23,628 INFO L495 AbstractCegarLoop]: Abstraction has 100638 states and 116787 transitions. [2023-11-06 23:04:23,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2023-11-06 23:04:23,628 INFO L276 IsEmpty]: Start isEmpty. Operand 100638 states and 116787 transitions. [2023-11-06 23:04:23,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2023-11-06 23:04:23,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:04:23,648 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:23,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:04:23,648 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:04:23,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:23,649 INFO L85 PathProgramCache]: Analyzing trace with hash -647280194, now seen corresponding path program 1 times [2023-11-06 23:04:23,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:23,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426740531] [2023-11-06 23:04:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:23,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-06 23:04:24,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:24,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426740531] [2023-11-06 23:04:24,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426740531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:24,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:24,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:04:24,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518000380] [2023-11-06 23:04:24,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:24,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:04:24,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:24,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:04:24,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:24,115 INFO L87 Difference]: Start difference. First operand 100638 states and 116787 transitions. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2023-11-06 23:04:28,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:04:28,745 INFO L93 Difference]: Finished difference Result 203527 states and 235840 transitions. [2023-11-06 23:04:28,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:28,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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 564 [2023-11-06 23:04:28,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:04:28,886 INFO L225 Difference]: With dead ends: 203527 [2023-11-06 23:04:28,886 INFO L226 Difference]: Without dead ends: 102891 [2023-11-06 23:04:28,925 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 [2023-11-06 23:04:28,926 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 761 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 2663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:04:28,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 220 Invalid, 2663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-06 23:04:29,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102891 states. [2023-11-06 23:04:30,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102891 to 98385. [2023-11-06 23:04:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98385 states, 98384 states have (on average 1.123617661408359) internal successors, (110546), 98384 states have internal predecessors, (110546), 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) [2023-11-06 23:04:30,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98385 states to 98385 states and 110546 transitions. [2023-11-06 23:04:30,338 INFO L78 Accepts]: Start accepts. Automaton has 98385 states and 110546 transitions. Word has length 564 [2023-11-06 23:04:30,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:04:30,339 INFO L495 AbstractCegarLoop]: Abstraction has 98385 states and 110546 transitions. [2023-11-06 23:04:30,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2023-11-06 23:04:30,339 INFO L276 IsEmpty]: Start isEmpty. Operand 98385 states and 110546 transitions. [2023-11-06 23:04:30,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2023-11-06 23:04:30,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:04:30,353 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:30,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 23:04:30,354 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:04:30,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:30,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2107349485, now seen corresponding path program 1 times [2023-11-06 23:04:30,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:30,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270680493] [2023-11-06 23:04:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:30,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2023-11-06 23:04:31,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:31,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270680493] [2023-11-06 23:04:31,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270680493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:31,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:31,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:04:31,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027574801] [2023-11-06 23:04:31,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:31,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:04:31,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:31,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:04:31,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:31,229 INFO L87 Difference]: Start difference. First operand 98385 states and 110546 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2023-11-06 23:04:35,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:04:35,698 INFO L93 Difference]: Finished difference Result 219298 states and 246943 transitions. [2023-11-06 23:04:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:35,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 580 [2023-11-06 23:04:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:04:35,843 INFO L225 Difference]: With dead ends: 219298 [2023-11-06 23:04:35,843 INFO L226 Difference]: Without dead ends: 120915 [2023-11-06 23:04:35,878 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 [2023-11-06 23:04:35,878 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 806 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:04:35,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1117 Invalid, 2690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-06 23:04:35,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120915 states. [2023-11-06 23:04:37,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120915 to 119413. [2023-11-06 23:04:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119413 states, 119412 states have (on average 1.1120741634006632) internal successors, (132795), 119412 states have internal predecessors, (132795), 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) [2023-11-06 23:04:38,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119413 states to 119413 states and 132795 transitions. [2023-11-06 23:04:38,038 INFO L78 Accepts]: Start accepts. Automaton has 119413 states and 132795 transitions. Word has length 580 [2023-11-06 23:04:38,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:04:38,039 INFO L495 AbstractCegarLoop]: Abstraction has 119413 states and 132795 transitions. [2023-11-06 23:04:38,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2023-11-06 23:04:38,039 INFO L276 IsEmpty]: Start isEmpty. Operand 119413 states and 132795 transitions. [2023-11-06 23:04:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-11-06 23:04:38,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:04:38,053 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2023-11-06 23:04:38,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:04:38,053 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:04:38,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:38,054 INFO L85 PathProgramCache]: Analyzing trace with hash -685224357, now seen corresponding path program 1 times [2023-11-06 23:04:38,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:38,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763348602] [2023-11-06 23:04:38,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:38,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 664 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-06 23:04:38,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763348602] [2023-11-06 23:04:38,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763348602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:38,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:38,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:04:38,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176303266] [2023-11-06 23:04:38,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:38,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:04:38,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:38,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:04:38,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:38,602 INFO L87 Difference]: Start difference. First operand 119413 states and 132795 transitions. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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) [2023-11-06 23:04:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:04:43,626 INFO L93 Difference]: Finished difference Result 238824 states and 265588 transitions. [2023-11-06 23:04:43,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:43,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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 586 [2023-11-06 23:04:43,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:04:43,790 INFO L225 Difference]: With dead ends: 238824 [2023-11-06 23:04:43,790 INFO L226 Difference]: Without dead ends: 119413 [2023-11-06 23:04:43,836 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 [2023-11-06 23:04:43,836 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 647 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:04:43,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1284 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-06 23:04:43,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119413 states. [2023-11-06 23:04:45,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119413 to 113405. [2023-11-06 23:04:45,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113405 states, 113404 states have (on average 1.0837801135762406) internal successors, (122905), 113404 states have internal predecessors, (122905), 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) [2023-11-06 23:04:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113405 states to 113405 states and 122905 transitions. [2023-11-06 23:04:45,502 INFO L78 Accepts]: Start accepts. Automaton has 113405 states and 122905 transitions. Word has length 586 [2023-11-06 23:04:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:04:45,503 INFO L495 AbstractCegarLoop]: Abstraction has 113405 states and 122905 transitions. [2023-11-06 23:04:45,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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) [2023-11-06 23:04:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 113405 states and 122905 transitions. [2023-11-06 23:04:45,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2023-11-06 23:04:45,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:04:45,524 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:45,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 23:04:45,524 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:04:45,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:45,525 INFO L85 PathProgramCache]: Analyzing trace with hash -42878627, now seen corresponding path program 1 times [2023-11-06 23:04:45,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:45,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193688416] [2023-11-06 23:04:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:45,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 459 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-11-06 23:04:46,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:46,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193688416] [2023-11-06 23:04:46,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193688416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:46,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:46,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:04:46,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402298846] [2023-11-06 23:04:46,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:46,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:04:46,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:46,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:04:46,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:46,582 INFO L87 Difference]: Start difference. First operand 113405 states and 122905 transitions. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2023-11-06 23:04:50,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:04:50,979 INFO L93 Difference]: Finished difference Result 231314 states and 250382 transitions. [2023-11-06 23:04:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:50,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 601 [2023-11-06 23:04:50,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:04:51,121 INFO L225 Difference]: With dead ends: 231314 [2023-11-06 23:04:51,121 INFO L226 Difference]: Without dead ends: 117160 [2023-11-06 23:04:51,164 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 [2023-11-06 23:04:51,165 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 723 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:04:51,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1000 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-06 23:04:51,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117160 states. [2023-11-06 23:04:52,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117160 to 102140. [2023-11-06 23:04:52,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102140 states, 102139 states have (on average 1.0688473550749469) internal successors, (109171), 102139 states have internal predecessors, (109171), 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) [2023-11-06 23:04:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102140 states to 102140 states and 109171 transitions. [2023-11-06 23:04:52,650 INFO L78 Accepts]: Start accepts. Automaton has 102140 states and 109171 transitions. Word has length 601 [2023-11-06 23:04:52,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:04:52,651 INFO L495 AbstractCegarLoop]: Abstraction has 102140 states and 109171 transitions. [2023-11-06 23:04:52,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2023-11-06 23:04:52,651 INFO L276 IsEmpty]: Start isEmpty. Operand 102140 states and 109171 transitions. [2023-11-06 23:04:52,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2023-11-06 23:04:52,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:04:52,679 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:52,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:04:52,679 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:04:52,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:52,680 INFO L85 PathProgramCache]: Analyzing trace with hash -142545240, now seen corresponding path program 1 times [2023-11-06 23:04:52,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:52,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011167270] [2023-11-06 23:04:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:52,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 888 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-06 23:04:53,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:53,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011167270] [2023-11-06 23:04:53,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011167270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:53,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:53,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:04:53,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238621550] [2023-11-06 23:04:53,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:53,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:04:53,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:53,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:04:53,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:53,756 INFO L87 Difference]: Start difference. First operand 102140 states and 109171 transitions. Second operand has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 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) [2023-11-06 23:04:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:04:58,335 INFO L93 Difference]: Finished difference Result 232065 states and 249085 transitions. [2023-11-06 23:04:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:58,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 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 865 [2023-11-06 23:04:58,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:04:58,473 INFO L225 Difference]: With dead ends: 232065 [2023-11-06 23:04:58,473 INFO L226 Difference]: Without dead ends: 130678 [2023-11-06 23:04:58,495 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 [2023-11-06 23:04:58,495 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 682 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:04:58,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1239 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-06 23:04:58,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130678 states. [2023-11-06 23:04:59,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130678 to 128425. [2023-11-06 23:05:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128425 states, 128424 states have (on average 1.0613436740796114) internal successors, (136302), 128424 states have internal predecessors, (136302), 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) [2023-11-06 23:05:00,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128425 states to 128425 states and 136302 transitions. [2023-11-06 23:05:00,188 INFO L78 Accepts]: Start accepts. Automaton has 128425 states and 136302 transitions. Word has length 865 [2023-11-06 23:05:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:00,189 INFO L495 AbstractCegarLoop]: Abstraction has 128425 states and 136302 transitions. [2023-11-06 23:05:00,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 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) [2023-11-06 23:05:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 128425 states and 136302 transitions. [2023-11-06 23:05:00,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2023-11-06 23:05:00,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:00,227 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:00,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 23:05:00,227 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:00,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:00,228 INFO L85 PathProgramCache]: Analyzing trace with hash -962586066, now seen corresponding path program 1 times [2023-11-06 23:05:00,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:00,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545039690] [2023-11-06 23:05:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:00,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 773 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-11-06 23:05:01,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:01,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545039690] [2023-11-06 23:05:01,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545039690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:01,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:01,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:05:01,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6200751] [2023-11-06 23:05:01,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:01,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:01,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:01,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:01,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:01,627 INFO L87 Difference]: Start difference. First operand 128425 states and 136302 transitions. Second operand has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 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)