./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem04_label35.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem04_label35.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7fba195f88797a3387f21cb74f29882ae69c98ecc2dd0fc48df1c4aac92d30fb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:13:04,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:13:04,137 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:13:04,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:13:04,143 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:13:04,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:13:04,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:13:04,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:13:04,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:13:04,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:13:04,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:13:04,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:13:04,187 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:13:04,189 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:13:04,190 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:13:04,190 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:13:04,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:13:04,191 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:13:04,191 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:13:04,192 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:13:04,192 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:13:04,193 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:13:04,193 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:13:04,195 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:13:04,196 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:13:04,197 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:13:04,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:13:04,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:13:04,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:13:04,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:13:04,200 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:13:04,200 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:13:04,200 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:13:04,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:13:04,201 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:13:04,201 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:13:04,201 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:13:04,201 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:13:04,202 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:13:04,202 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_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fba195f88797a3387f21cb74f29882ae69c98ecc2dd0fc48df1c4aac92d30fb [2023-11-12 02:13:04,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:13:04,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:13:04,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:13:04,512 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:13:04,513 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:13:04,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/eca-rers2012/Problem04_label35.c [2023-11-12 02:13:07,572 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:13:08,216 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:13:08,217 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/sv-benchmarks/c/eca-rers2012/Problem04_label35.c [2023-11-12 02:13:08,256 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl/data/34b8702c7/04abcccbb425476fbd9bf3a6b153d3f0/FLAGc65b39404 [2023-11-12 02:13:08,276 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl/data/34b8702c7/04abcccbb425476fbd9bf3a6b153d3f0 [2023-11-12 02:13:08,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:13:08,285 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:13:08,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:13:08,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:13:08,294 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:13:08,297 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:13:08" (1/1) ... [2023-11-12 02:13:08,298 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403155bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:08, skipping insertion in model container [2023-11-12 02:13:08,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:13:08" (1/1) ... [2023-11-12 02:13:08,461 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:13:09,853 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_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/sv-benchmarks/c/eca-rers2012/Problem04_label35.c[178691,178704] [2023-11-12 02:13:09,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:13:09,895 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:13:10,587 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_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/sv-benchmarks/c/eca-rers2012/Problem04_label35.c[178691,178704] [2023-11-12 02:13:10,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:13:10,631 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:13:10,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:10 WrapperNode [2023-11-12 02:13:10,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:13:10,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:13:10,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:13:10,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:13:10,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:10" (1/1) ... [2023-11-12 02:13:10,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:10" (1/1) ... [2023-11-12 02:13:10,940 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5573 [2023-11-12 02:13:10,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:13:10,941 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:13:10,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:13:10,941 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:13:10,951 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:10" (1/1) ... [2023-11-12 02:13:10,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:10" (1/1) ... [2023-11-12 02:13:10,971 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:10" (1/1) ... [2023-11-12 02:13:10,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:10" (1/1) ... [2023-11-12 02:13:11,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:10" (1/1) ... [2023-11-12 02:13:11,108 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:10" (1/1) ... [2023-11-12 02:13:11,129 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:10" (1/1) ... [2023-11-12 02:13:11,140 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:10" (1/1) ... [2023-11-12 02:13:11,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:13:11,169 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:13:11,169 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:13:11,169 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:13:11,170 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:10" (1/1) ... [2023-11-12 02:13:11,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:13:11,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:11,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:13:11,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372caa9f-b0a2-4d60-b5ea-40a06bc5b5cf/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:13:11,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:13:11,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:13:11,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:13:11,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:13:11,367 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:13:11,369 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:13:16,445 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:13:16,462 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:13:16,463 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:13:16,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:13:16 BoogieIcfgContainer [2023-11-12 02:13:16,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:13:16,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:13:16,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:13:16,473 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:13:16,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:13:08" (1/3) ... [2023-11-12 02:13:16,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485fd342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:13:16, skipping insertion in model container [2023-11-12 02:13:16,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:10" (2/3) ... [2023-11-12 02:13:16,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485fd342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:13:16, skipping insertion in model container [2023-11-12 02:13:16,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:13:16" (3/3) ... [2023-11-12 02:13:16,477 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label35.c [2023-11-12 02:13:16,498 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:13:16,499 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:13:16,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:13:16,593 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23e332dc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:13:16,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:13:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-11-12 02:13:16,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:16,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:16,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:16,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash 258985188, now seen corresponding path program 1 times [2023-11-12 02:13:16,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:16,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690531054] [2023-11-12 02:13:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:16,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:19,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:19,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690531054] [2023-11-12 02:13:19,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690531054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:19,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:19,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:13:19,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885818251] [2023-11-12 02:13:19,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:19,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:19,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:19,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:19,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:19,370 INFO L87 Difference]: Start difference. First operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 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 257.6666666666667) internal successors, (773), 2 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:23,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:23,907 INFO L93 Difference]: Finished difference Result 2589 states and 5028 transitions. [2023-11-12 02:13:23,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:23,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 2 states have internal predecessors, (773), 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 773 [2023-11-12 02:13:23,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:23,955 INFO L225 Difference]: With dead ends: 2589 [2023-11-12 02:13:23,956 INFO L226 Difference]: Without dead ends: 1640 [2023-11-12 02:13:23,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:23,967 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 117 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 3375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:23,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 109 Invalid, 3375 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [420 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-12 02:13:23,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2023-11-12 02:13:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640. [2023-11-12 02:13:24,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1639 states have (on average 1.8791946308724832) internal successors, (3080), 1639 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 3080 transitions. [2023-11-12 02:13:24,147 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 3080 transitions. Word has length 773 [2023-11-12 02:13:24,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:24,151 INFO L495 AbstractCegarLoop]: Abstraction has 1640 states and 3080 transitions. [2023-11-12 02:13:24,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 2 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:24,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 3080 transitions. [2023-11-12 02:13:24,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2023-11-12 02:13:24,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:24,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:24,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:13:24,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:24,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:24,181 INFO L85 PathProgramCache]: Analyzing trace with hash 857979146, now seen corresponding path program 1 times [2023-11-12 02:13:24,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:24,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121577857] [2023-11-12 02:13:24,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:24,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:26,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:26,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121577857] [2023-11-12 02:13:26,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121577857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:26,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:26,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:13:26,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355901579] [2023-11-12 02:13:26,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:26,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:26,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:26,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:26,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:26,053 INFO L87 Difference]: Start difference. First operand 1640 states and 3080 transitions. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 2 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:30,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:30,365 INFO L93 Difference]: Finished difference Result 4914 states and 9235 transitions. [2023-11-12 02:13:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:30,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 2 states have internal predecessors, (777), 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 777 [2023-11-12 02:13:30,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:30,393 INFO L225 Difference]: With dead ends: 4914 [2023-11-12 02:13:30,394 INFO L226 Difference]: Without dead ends: 3276 [2023-11-12 02:13:30,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:30,405 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 819 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 3180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:30,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 449 Invalid, 3180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-12 02:13:30,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2023-11-12 02:13:30,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 3276. [2023-11-12 02:13:30,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3276 states, 3275 states have (on average 1.6451908396946564) internal successors, (5388), 3275 states have internal predecessors, (5388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 5388 transitions. [2023-11-12 02:13:30,500 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 5388 transitions. Word has length 777 [2023-11-12 02:13:30,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:30,501 INFO L495 AbstractCegarLoop]: Abstraction has 3276 states and 5388 transitions. [2023-11-12 02:13:30,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 2 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 5388 transitions. [2023-11-12 02:13:30,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-11-12 02:13:30,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:30,535 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:30,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:13:30,536 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:30,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:30,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1783333232, now seen corresponding path program 1 times [2023-11-12 02:13:30,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:30,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556363019] [2023-11-12 02:13:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:30,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:13:31,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:31,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556363019] [2023-11-12 02:13:31,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556363019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:31,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:31,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:13:31,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841964149] [2023-11-12 02:13:31,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:31,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:31,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:31,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:31,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:31,469 INFO L87 Difference]: Start difference. First operand 3276 states and 5388 transitions. Second operand has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 2 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:35,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:35,508 INFO L93 Difference]: Finished difference Result 9822 states and 16159 transitions. [2023-11-12 02:13:35,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:35,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 2 states have internal predecessors, (779), 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 782 [2023-11-12 02:13:35,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:35,548 INFO L225 Difference]: With dead ends: 9822 [2023-11-12 02:13:35,548 INFO L226 Difference]: Without dead ends: 6548 [2023-11-12 02:13:35,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:35,555 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 997 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 1177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 3456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1177 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:35,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 198 Invalid, 3456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1177 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-12 02:13:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2023-11-12 02:13:35,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 6548. [2023-11-12 02:13:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6548 states, 6547 states have (on average 1.5630059569268366) internal successors, (10233), 6547 states have internal predecessors, (10233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:35,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6548 states to 6548 states and 10233 transitions. [2023-11-12 02:13:35,720 INFO L78 Accepts]: Start accepts. Automaton has 6548 states and 10233 transitions. Word has length 782 [2023-11-12 02:13:35,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:35,721 INFO L495 AbstractCegarLoop]: Abstraction has 6548 states and 10233 transitions. [2023-11-12 02:13:35,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 2 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:35,721 INFO L276 IsEmpty]: Start isEmpty. Operand 6548 states and 10233 transitions. [2023-11-12 02:13:35,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-11-12 02:13:35,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:35,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:35,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:13:35,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:35,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:35,741 INFO L85 PathProgramCache]: Analyzing trace with hash 384705972, now seen corresponding path program 1 times [2023-11-12 02:13:35,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:35,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669979904] [2023-11-12 02:13:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:35,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:36,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:36,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669979904] [2023-11-12 02:13:36,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669979904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:36,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:36,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:13:36,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097092738] [2023-11-12 02:13:36,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:36,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:36,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:36,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:36,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:36,399 INFO L87 Difference]: Start difference. First operand 6548 states and 10233 transitions. Second operand has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 2 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:40,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:40,176 INFO L93 Difference]: Finished difference Result 19638 states and 30694 transitions. [2023-11-12 02:13:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:40,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 2 states have internal predecessors, (782), 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 782 [2023-11-12 02:13:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:40,237 INFO L225 Difference]: With dead ends: 19638 [2023-11-12 02:13:40,238 INFO L226 Difference]: Without dead ends: 13092 [2023-11-12 02:13:40,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:40,248 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1076 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2066 mSolverCounterSat, 1063 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1063 IncrementalHoareTripleChecker+Valid, 2066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:40,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 485 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1063 Valid, 2066 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-12 02:13:40,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13092 states. [2023-11-12 02:13:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13092 to 13092. [2023-11-12 02:13:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13092 states, 13091 states have (on average 1.3953861431517838) internal successors, (18267), 13091 states have internal predecessors, (18267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:40,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13092 states to 13092 states and 18267 transitions. [2023-11-12 02:13:40,721 INFO L78 Accepts]: Start accepts. Automaton has 13092 states and 18267 transitions. Word has length 782 [2023-11-12 02:13:40,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:40,722 INFO L495 AbstractCegarLoop]: Abstraction has 13092 states and 18267 transitions. [2023-11-12 02:13:40,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 2 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 13092 states and 18267 transitions. [2023-11-12 02:13:40,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-12 02:13:40,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:40,752 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:40,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:13:40,753 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:40,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:40,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1622034946, now seen corresponding path program 1 times [2023-11-12 02:13:40,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:40,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670796525] [2023-11-12 02:13:40,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:40,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:42,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:42,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670796525] [2023-11-12 02:13:42,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670796525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:42,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:42,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:13:42,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479993163] [2023-11-12 02:13:42,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:42,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:42,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:42,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:42,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:42,135 INFO L87 Difference]: Start difference. First operand 13092 states and 18267 transitions. Second operand has 3 states, 3 states have (on average 262.0) internal successors, (786), 2 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:46,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:46,003 INFO L93 Difference]: Finished difference Result 27818 states and 38918 transitions. [2023-11-12 02:13:46,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:46,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 2 states have internal predecessors, (786), 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 786 [2023-11-12 02:13:46,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:46,044 INFO L225 Difference]: With dead ends: 27818 [2023-11-12 02:13:46,044 INFO L226 Difference]: Without dead ends: 14728 [2023-11-12 02:13:46,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:46,060 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 808 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 3317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:46,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 719 Invalid, 3317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-12 02:13:46,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14728 states. [2023-11-12 02:13:46,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14728 to 14728. [2023-11-12 02:13:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14728 states, 14727 states have (on average 1.3640931622190535) internal successors, (20089), 14727 states have internal predecessors, (20089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:46,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14728 states to 14728 states and 20089 transitions. [2023-11-12 02:13:46,379 INFO L78 Accepts]: Start accepts. Automaton has 14728 states and 20089 transitions. Word has length 786 [2023-11-12 02:13:46,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:46,380 INFO L495 AbstractCegarLoop]: Abstraction has 14728 states and 20089 transitions. [2023-11-12 02:13:46,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 2 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:46,381 INFO L276 IsEmpty]: Start isEmpty. Operand 14728 states and 20089 transitions. [2023-11-12 02:13:46,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2023-11-12 02:13:46,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:46,415 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:46,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:13:46,416 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:46,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:46,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1441286473, now seen corresponding path program 1 times [2023-11-12 02:13:46,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:46,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782273488] [2023-11-12 02:13:46,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:46,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:47,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:47,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782273488] [2023-11-12 02:13:47,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782273488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:47,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:47,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:13:47,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119764047] [2023-11-12 02:13:47,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:47,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:47,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:47,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:47,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:47,817 INFO L87 Difference]: Start difference. First operand 14728 states and 20089 transitions. Second operand has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:51,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:51,599 INFO L93 Difference]: Finished difference Result 35998 states and 50258 transitions. [2023-11-12 02:13:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:51,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 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 795 [2023-11-12 02:13:51,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:51,646 INFO L225 Difference]: With dead ends: 35998 [2023-11-12 02:13:51,646 INFO L226 Difference]: Without dead ends: 21272 [2023-11-12 02:13:51,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:51,664 INFO L413 NwaCegarLoop]: 1218 mSDtfsCounter, 83 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2983 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 2983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:51,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1227 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 2983 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-12 02:13:51,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21272 states. [2023-11-12 02:13:51,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21272 to 20454. [2023-11-12 02:13:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20454 states, 20453 states have (on average 1.3850779836698772) internal successors, (28329), 20453 states have internal predecessors, (28329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20454 states to 20454 states and 28329 transitions. [2023-11-12 02:13:52,012 INFO L78 Accepts]: Start accepts. Automaton has 20454 states and 28329 transitions. Word has length 795 [2023-11-12 02:13:52,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:52,014 INFO L495 AbstractCegarLoop]: Abstraction has 20454 states and 28329 transitions. [2023-11-12 02:13:52,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:52,015 INFO L276 IsEmpty]: Start isEmpty. Operand 20454 states and 28329 transitions. [2023-11-12 02:13:52,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2023-11-12 02:13:52,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:52,052 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:52,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:13:52,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:52,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:52,053 INFO L85 PathProgramCache]: Analyzing trace with hash 21791069, now seen corresponding path program 1 times [2023-11-12 02:13:52,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:52,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131112605] [2023-11-12 02:13:52,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:52,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:53,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:53,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131112605] [2023-11-12 02:13:53,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131112605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:53,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:53,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:13:53,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85526391] [2023-11-12 02:13:53,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:53,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:53,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:53,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:53,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:53,350 INFO L87 Difference]: Start difference. First operand 20454 states and 28329 transitions. Second operand has 4 states, 4 states have (on average 199.75) internal successors, (799), 3 states have internal predecessors, (799), 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)