./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem11_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem11_label46.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu --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 201cd0b9f7312851770c009ac8fff4b46d270c8816b37eb4df1c49891060a8fb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:35:48,736 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:35:48,813 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:35:48,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:35:48,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:35:48,856 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:35:48,856 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:35:48,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:35:48,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:35:48,858 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:35:48,859 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:35:48,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:35:48,861 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:35:48,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:35:48,862 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:35:48,862 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:35:48,863 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:35:48,863 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:35:48,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:35:48,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:35:48,881 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:35:48,882 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:35:48,882 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:35:48,883 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:35:48,883 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:35:48,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:35:48,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:35:48,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:35:48,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:48,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:35:48,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:35:48,891 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:35:48,891 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:35:48,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:35:48,893 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:35:48,893 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:35:48,894 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:35:48,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:35:48,895 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:35:48,895 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_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 201cd0b9f7312851770c009ac8fff4b46d270c8816b37eb4df1c49891060a8fb [2023-11-19 07:35:49,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:49,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:49,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:49,217 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:49,218 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:49,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/eca-rers2012/Problem11_label46.c [2023-11-19 07:35:52,273 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:52,714 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:52,714 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/sv-benchmarks/c/eca-rers2012/Problem11_label46.c [2023-11-19 07:35:52,733 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/data/db5498bad/060ce3609b32476ea6640917d868d0ad/FLAG44d24d6e4 [2023-11-19 07:35:52,753 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/data/db5498bad/060ce3609b32476ea6640917d868d0ad [2023-11-19 07:35:52,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:52,763 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:52,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:52,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:52,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:52,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c33b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52, skipping insertion in model container [2023-11-19 07:35:52,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,852 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:53,102 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_ac82045c-7614-431d-bac2-9685074ca846/sv-benchmarks/c/eca-rers2012/Problem11_label46.c[8949,8962] [2023-11-19 07:35:53,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:53,431 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:53,483 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_ac82045c-7614-431d-bac2-9685074ca846/sv-benchmarks/c/eca-rers2012/Problem11_label46.c[8949,8962] [2023-11-19 07:35:53,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:53,651 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:53,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53 WrapperNode [2023-11-19 07:35:53,651 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:53,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:53,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:53,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:53,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,898 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2023-11-19 07:35:53,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:53,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:53,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:53,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:53,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:53,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:54,009 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:54,034 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:54,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:54,079 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:54,080 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:54,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:54,081 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:54,082 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (1/1) ... [2023-11-19 07:35:54,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:54,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:54,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:54,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:35:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:35:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:54,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:54,244 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:54,247 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:56,186 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:56,206 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:56,207 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:35:56,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:56 BoogieIcfgContainer [2023-11-19 07:35:56,220 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:56,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:56,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:56,227 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:56,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:52" (1/3) ... [2023-11-19 07:35:56,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17407698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:56, skipping insertion in model container [2023-11-19 07:35:56,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:53" (2/3) ... [2023-11-19 07:35:56,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17407698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:56, skipping insertion in model container [2023-11-19 07:35:56,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:56" (3/3) ... [2023-11-19 07:35:56,233 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label46.c [2023-11-19 07:35:56,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:56,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:35:56,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:56,331 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;@7518b2c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:56,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:35:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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) [2023-11-19 07:35:56,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-19 07:35:56,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:56,348 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] [2023-11-19 07:35:56,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:56,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:56,354 INFO L85 PathProgramCache]: Analyzing trace with hash 531730986, now seen corresponding path program 1 times [2023-11-19 07:35:56,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:56,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061134167] [2023-11-19 07:35:56,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:56,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:56,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:56,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:56,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061134167] [2023-11-19 07:35:56,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061134167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:56,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:56,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:56,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717295804] [2023-11-19 07:35:56,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:56,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:56,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:56,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:56,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:56,871 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 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) [2023-11-19 07:35:58,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:58,102 INFO L93 Difference]: Finished difference Result 776 states and 1363 transitions. [2023-11-19 07:35:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:58,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 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 62 [2023-11-19 07:35:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:58,121 INFO L225 Difference]: With dead ends: 776 [2023-11-19 07:35:58,121 INFO L226 Difference]: Without dead ends: 413 [2023-11-19 07:35:58,126 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 [2023-11-19 07:35:58,130 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 165 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:58,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 196 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:35:58,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-11-19 07:35:58,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 411. [2023-11-19 07:35:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.4585365853658536) internal successors, (598), 410 states have internal predecessors, (598), 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) [2023-11-19 07:35:58,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 598 transitions. [2023-11-19 07:35:58,200 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 598 transitions. Word has length 62 [2023-11-19 07:35:58,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:58,201 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 598 transitions. [2023-11-19 07:35:58,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 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) [2023-11-19 07:35:58,202 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 598 transitions. [2023-11-19 07:35:58,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-19 07:35:58,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:58,209 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 07:35:58,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:35:58,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:58,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1066754174, now seen corresponding path program 1 times [2023-11-19 07:35:58,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:58,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240626975] [2023-11-19 07:35:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:58,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:58,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:58,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240626975] [2023-11-19 07:35:58,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240626975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:58,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:58,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:58,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624186065] [2023-11-19 07:35:58,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:58,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:58,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:58,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:58,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:58,505 INFO L87 Difference]: Start difference. First operand 411 states and 598 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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) [2023-11-19 07:35:59,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:59,447 INFO L93 Difference]: Finished difference Result 1209 states and 1765 transitions. [2023-11-19 07:35:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:59,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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 130 [2023-11-19 07:35:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:59,460 INFO L225 Difference]: With dead ends: 1209 [2023-11-19 07:35:59,461 INFO L226 Difference]: Without dead ends: 800 [2023-11-19 07:35:59,464 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 [2023-11-19 07:35:59,465 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 142 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:59,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 122 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:35:59,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2023-11-19 07:35:59,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 787. [2023-11-19 07:35:59,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 1.3842239185750635) internal successors, (1088), 786 states have internal predecessors, (1088), 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) [2023-11-19 07:35:59,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1088 transitions. [2023-11-19 07:35:59,539 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1088 transitions. Word has length 130 [2023-11-19 07:35:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:59,540 INFO L495 AbstractCegarLoop]: Abstraction has 787 states and 1088 transitions. [2023-11-19 07:35:59,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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) [2023-11-19 07:35:59,541 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1088 transitions. [2023-11-19 07:35:59,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 07:35:59,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:59,549 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 07:35:59,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:35:59,549 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:59,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:59,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1046029789, now seen corresponding path program 1 times [2023-11-19 07:35:59,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:59,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473029505] [2023-11-19 07:35:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:59,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:00,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:00,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473029505] [2023-11-19 07:36:00,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473029505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:00,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:00,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:00,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668421619] [2023-11-19 07:36:00,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:00,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:00,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:00,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:00,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:00,005 INFO L87 Difference]: Start difference. First operand 787 states and 1088 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2023-11-19 07:36:00,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:00,882 INFO L93 Difference]: Finished difference Result 1942 states and 2629 transitions. [2023-11-19 07:36:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:00,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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 132 [2023-11-19 07:36:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:00,891 INFO L225 Difference]: With dead ends: 1942 [2023-11-19 07:36:00,891 INFO L226 Difference]: Without dead ends: 1157 [2023-11-19 07:36:00,893 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 [2023-11-19 07:36:00,894 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:00,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 190 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:36:00,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2023-11-19 07:36:00,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1156. [2023-11-19 07:36:00,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.277056277056277) internal successors, (1475), 1155 states have internal predecessors, (1475), 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) [2023-11-19 07:36:00,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1475 transitions. [2023-11-19 07:36:00,930 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1475 transitions. Word has length 132 [2023-11-19 07:36:00,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:00,931 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1475 transitions. [2023-11-19 07:36:00,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2023-11-19 07:36:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1475 transitions. [2023-11-19 07:36:00,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-19 07:36:00,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:00,938 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 07:36:00,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:00,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:00,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:00,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1696825530, now seen corresponding path program 1 times [2023-11-19 07:36:00,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:00,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263860969] [2023-11-19 07:36:00,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:00,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:01,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:01,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263860969] [2023-11-19 07:36:01,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263860969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:01,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:01,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:01,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19565724] [2023-11-19 07:36:01,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:01,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:01,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:01,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:01,199 INFO L87 Difference]: Start difference. First operand 1156 states and 1475 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2023-11-19 07:36:02,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:02,127 INFO L93 Difference]: Finished difference Result 2691 states and 3513 transitions. [2023-11-19 07:36:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:02,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 174 [2023-11-19 07:36:02,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:02,141 INFO L225 Difference]: With dead ends: 2691 [2023-11-19 07:36:02,142 INFO L226 Difference]: Without dead ends: 1721 [2023-11-19 07:36:02,143 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 [2023-11-19 07:36:02,145 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 144 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:02,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 336 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:36:02,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2023-11-19 07:36:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1528. [2023-11-19 07:36:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 1.260641781270465) internal successors, (1925), 1527 states have internal predecessors, (1925), 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) [2023-11-19 07:36:02,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1925 transitions. [2023-11-19 07:36:02,187 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1925 transitions. Word has length 174 [2023-11-19 07:36:02,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:02,188 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 1925 transitions. [2023-11-19 07:36:02,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2023-11-19 07:36:02,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1925 transitions. [2023-11-19 07:36:02,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-11-19 07:36:02,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:02,193 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:02,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:36:02,194 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:02,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:02,195 INFO L85 PathProgramCache]: Analyzing trace with hash 800976377, now seen corresponding path program 1 times [2023-11-19 07:36:02,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:02,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100952162] [2023-11-19 07:36:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:02,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-19 07:36:02,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:02,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100952162] [2023-11-19 07:36:02,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100952162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:02,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:02,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:02,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008781207] [2023-11-19 07:36:02,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:02,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:02,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:02,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:02,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:02,671 INFO L87 Difference]: Start difference. First operand 1528 states and 1925 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-11-19 07:36:03,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:03,664 INFO L93 Difference]: Finished difference Result 4160 states and 5315 transitions. [2023-11-19 07:36:03,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:03,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 244 [2023-11-19 07:36:03,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:03,682 INFO L225 Difference]: With dead ends: 4160 [2023-11-19 07:36:03,682 INFO L226 Difference]: Without dead ends: 2634 [2023-11-19 07:36:03,686 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 [2023-11-19 07:36:03,692 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 152 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:03,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 352 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:36:03,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2023-11-19 07:36:03,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2634. [2023-11-19 07:36:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2633 states have (on average 1.2468666919863274) internal successors, (3283), 2633 states have internal predecessors, (3283), 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) [2023-11-19 07:36:03,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 3283 transitions. [2023-11-19 07:36:03,762 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 3283 transitions. Word has length 244 [2023-11-19 07:36:03,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:03,764 INFO L495 AbstractCegarLoop]: Abstraction has 2634 states and 3283 transitions. [2023-11-19 07:36:03,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-11-19 07:36:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 3283 transitions. [2023-11-19 07:36:03,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-11-19 07:36:03,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:03,771 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:03,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:36:03,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:03,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:03,773 INFO L85 PathProgramCache]: Analyzing trace with hash 531389150, now seen corresponding path program 1 times [2023-11-19 07:36:03,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:03,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073912929] [2023-11-19 07:36:03,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:03,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 07:36:04,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073912929] [2023-11-19 07:36:04,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073912929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:04,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:04,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:04,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074237917] [2023-11-19 07:36:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:04,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:04,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:04,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:04,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:04,033 INFO L87 Difference]: Start difference. First operand 2634 states and 3283 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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) [2023-11-19 07:36:04,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:04,971 INFO L93 Difference]: Finished difference Result 6553 states and 8157 transitions. [2023-11-19 07:36:04,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:04,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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 255 [2023-11-19 07:36:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:04,996 INFO L225 Difference]: With dead ends: 6553 [2023-11-19 07:36:04,996 INFO L226 Difference]: Without dead ends: 3921 [2023-11-19 07:36:05,000 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 [2023-11-19 07:36:05,003 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 115 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:05,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 155 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:36:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3921 states. [2023-11-19 07:36:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3921 to 3185. [2023-11-19 07:36:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 3184 states have (on average 1.1699120603015076) internal successors, (3725), 3184 states have internal predecessors, (3725), 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) [2023-11-19 07:36:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 3725 transitions. [2023-11-19 07:36:05,099 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 3725 transitions. Word has length 255 [2023-11-19 07:36:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:05,101 INFO L495 AbstractCegarLoop]: Abstraction has 3185 states and 3725 transitions. [2023-11-19 07:36:05,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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) [2023-11-19 07:36:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 3725 transitions. [2023-11-19 07:36:05,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-11-19 07:36:05,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:05,114 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:05,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:36:05,114 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:05,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:05,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1060462334, now seen corresponding path program 1 times [2023-11-19 07:36:05,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:05,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601944591] [2023-11-19 07:36:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:05,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-19 07:36:05,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:05,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601944591] [2023-11-19 07:36:05,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601944591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:05,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:05,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:05,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288689523] [2023-11-19 07:36:05,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:05,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:05,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:05,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:05,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:05,571 INFO L87 Difference]: Start difference. First operand 3185 states and 3725 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-11-19 07:36:06,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:06,508 INFO L93 Difference]: Finished difference Result 7108 states and 8338 transitions. [2023-11-19 07:36:06,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:06,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 271 [2023-11-19 07:36:06,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:06,530 INFO L225 Difference]: With dead ends: 7108 [2023-11-19 07:36:06,531 INFO L226 Difference]: Without dead ends: 3925 [2023-11-19 07:36:06,535 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 [2023-11-19 07:36:06,538 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 139 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:06,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 372 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:36:06,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2023-11-19 07:36:06,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3736. [2023-11-19 07:36:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3736 states, 3735 states have (on average 1.1606425702811245) internal successors, (4335), 3735 states have internal predecessors, (4335), 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) [2023-11-19 07:36:06,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 4335 transitions. [2023-11-19 07:36:06,635 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 4335 transitions. Word has length 271 [2023-11-19 07:36:06,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:06,636 INFO L495 AbstractCegarLoop]: Abstraction has 3736 states and 4335 transitions. [2023-11-19 07:36:06,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-11-19 07:36:06,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 4335 transitions. [2023-11-19 07:36:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-11-19 07:36:06,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:06,643 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:06,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:36:06,643 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:06,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash 639036590, now seen corresponding path program 1 times [2023-11-19 07:36:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:06,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760651439] [2023-11-19 07:36:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:06,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-19 07:36:07,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:07,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760651439] [2023-11-19 07:36:07,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760651439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:07,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:07,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:07,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084465119] [2023-11-19 07:36:07,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:07,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:07,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:07,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:07,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:07,090 INFO L87 Difference]: Start difference. First operand 3736 states and 4335 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2023-11-19 07:36:07,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:07,943 INFO L93 Difference]: Finished difference Result 8579 states and 9918 transitions. [2023-11-19 07:36:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:07,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 284 [2023-11-19 07:36:07,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:07,971 INFO L225 Difference]: With dead ends: 8579 [2023-11-19 07:36:07,971 INFO L226 Difference]: Without dead ends: 4845 [2023-11-19 07:36:07,976 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 [2023-11-19 07:36:07,977 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 158 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:07,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 390 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:36:07,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2023-11-19 07:36:08,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 4844. [2023-11-19 07:36:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4844 states, 4843 states have (on average 1.1525913689861655) internal successors, (5582), 4843 states have internal predecessors, (5582), 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) [2023-11-19 07:36:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 5582 transitions. [2023-11-19 07:36:08,097 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 5582 transitions. Word has length 284 [2023-11-19 07:36:08,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:08,098 INFO L495 AbstractCegarLoop]: Abstraction has 4844 states and 5582 transitions. [2023-11-19 07:36:08,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2023-11-19 07:36:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 5582 transitions. [2023-11-19 07:36:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-19 07:36:08,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:08,106 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:08,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:36:08,107 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:08,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:08,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1603746634, now seen corresponding path program 1 times [2023-11-19 07:36:08,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:08,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594933291] [2023-11-19 07:36:08,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:08,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-19 07:36:08,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:08,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594933291] [2023-11-19 07:36:08,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594933291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:08,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:08,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:08,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285115135] [2023-11-19 07:36:08,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:08,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:08,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:08,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:08,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:08,558 INFO L87 Difference]: Start difference. First operand 4844 states and 5582 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2023-11-19 07:36:09,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:09,411 INFO L93 Difference]: Finished difference Result 10238 states and 11865 transitions. [2023-11-19 07:36:09,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:09,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 293 [2023-11-19 07:36:09,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:09,441 INFO L225 Difference]: With dead ends: 10238 [2023-11-19 07:36:09,442 INFO L226 Difference]: Without dead ends: 5764 [2023-11-19 07:36:09,447 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 [2023-11-19 07:36:09,448 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 130 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:09,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 384 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:36:09,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5764 states. [2023-11-19 07:36:09,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5764 to 5212. [2023-11-19 07:36:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5212 states, 5211 states have (on average 1.146421032431395) internal successors, (5974), 5211 states have internal predecessors, (5974), 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) [2023-11-19 07:36:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5212 states to 5212 states and 5974 transitions. [2023-11-19 07:36:09,627 INFO L78 Accepts]: Start accepts. Automaton has 5212 states and 5974 transitions. Word has length 293 [2023-11-19 07:36:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:09,629 INFO L495 AbstractCegarLoop]: Abstraction has 5212 states and 5974 transitions. [2023-11-19 07:36:09,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2023-11-19 07:36:09,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5212 states and 5974 transitions. [2023-11-19 07:36:09,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2023-11-19 07:36:09,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:09,642 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:09,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:36:09,643 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:09,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:09,648 INFO L85 PathProgramCache]: Analyzing trace with hash -971055813, now seen corresponding path program 1 times [2023-11-19 07:36:09,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:09,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168034597] [2023-11-19 07:36:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:09,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-19 07:36:09,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:09,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168034597] [2023-11-19 07:36:09,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168034597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:09,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:09,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:09,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640921558] [2023-11-19 07:36:09,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:09,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:09,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:09,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:09,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:09,950 INFO L87 Difference]: Start difference. First operand 5212 states and 5974 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:10,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:10,952 INFO L93 Difference]: Finished difference Result 12262 states and 14255 transitions. [2023-11-19 07:36:10,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:10,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 321 [2023-11-19 07:36:10,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:10,989 INFO L225 Difference]: With dead ends: 12262 [2023-11-19 07:36:10,989 INFO L226 Difference]: Without dead ends: 7420 [2023-11-19 07:36:10,996 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 [2023-11-19 07:36:10,997 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 147 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:10,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 342 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:36:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7420 states. [2023-11-19 07:36:11,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7420 to 7235. [2023-11-19 07:36:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7235 states, 7234 states have (on average 1.1385125794857618) internal successors, (8236), 7234 states have internal predecessors, (8236), 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) [2023-11-19 07:36:11,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7235 states to 7235 states and 8236 transitions. [2023-11-19 07:36:11,229 INFO L78 Accepts]: Start accepts. Automaton has 7235 states and 8236 transitions. Word has length 321 [2023-11-19 07:36:11,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:11,230 INFO L495 AbstractCegarLoop]: Abstraction has 7235 states and 8236 transitions. [2023-11-19 07:36:11,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:11,231 INFO L276 IsEmpty]: Start isEmpty. Operand 7235 states and 8236 transitions. [2023-11-19 07:36:11,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-11-19 07:36:11,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:11,251 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-19 07:36:11,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:36:11,251 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:11,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:11,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1551061136, now seen corresponding path program 1 times [2023-11-19 07:36:11,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:11,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8535971] [2023-11-19 07:36:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:11,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 417 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-19 07:36:11,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8535971] [2023-11-19 07:36:11,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8535971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:11,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:11,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:11,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953484101] [2023-11-19 07:36:11,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:11,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:11,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:11,806 INFO L87 Difference]: Start difference. First operand 7235 states and 8236 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2023-11-19 07:36:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:12,750 INFO L93 Difference]: Finished difference Result 15954 states and 18177 transitions. [2023-11-19 07:36:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:12,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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 434 [2023-11-19 07:36:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:12,770 INFO L225 Difference]: With dead ends: 15954 [2023-11-19 07:36:12,770 INFO L226 Difference]: Without dead ends: 8905 [2023-11-19 07:36:12,780 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 [2023-11-19 07:36:12,781 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 67 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:12,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 180 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:36:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8905 states. [2023-11-19 07:36:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8905 to 8891. [2023-11-19 07:36:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8891 states, 8890 states have (on average 1.1227221597300336) internal successors, (9981), 8890 states have internal predecessors, (9981), 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) [2023-11-19 07:36:12,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8891 states to 8891 states and 9981 transitions. [2023-11-19 07:36:12,951 INFO L78 Accepts]: Start accepts. Automaton has 8891 states and 9981 transitions. Word has length 434 [2023-11-19 07:36:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:12,952 INFO L495 AbstractCegarLoop]: Abstraction has 8891 states and 9981 transitions. [2023-11-19 07:36:12,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2023-11-19 07:36:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 8891 states and 9981 transitions. [2023-11-19 07:36:12,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-11-19 07:36:12,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:12,980 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 07:36:12,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:36:12,981 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:12,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:12,981 INFO L85 PathProgramCache]: Analyzing trace with hash 531016907, now seen corresponding path program 1 times [2023-11-19 07:36:12,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:12,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228403373] [2023-11-19 07:36:12,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:12,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-19 07:36:13,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:13,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228403373] [2023-11-19 07:36:13,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228403373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:13,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:13,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:13,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997192004] [2023-11-19 07:36:13,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:13,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:13,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:13,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:13,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:13,438 INFO L87 Difference]: Start difference. First operand 8891 states and 9981 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) [2023-11-19 07:36:14,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:14,396 INFO L93 Difference]: Finished difference Result 18699 states and 21106 transitions. [2023-11-19 07:36:14,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:14,397 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 486 [2023-11-19 07:36:14,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:14,418 INFO L225 Difference]: With dead ends: 18699 [2023-11-19 07:36:14,419 INFO L226 Difference]: Without dead ends: 10178 [2023-11-19 07:36:14,429 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 [2023-11-19 07:36:14,429 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 70 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:14,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 354 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:36:14,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10178 states. [2023-11-19 07:36:14,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10178 to 9994. [2023-11-19 07:36:14,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9994 states, 9993 states have (on average 1.1252877013909737) internal successors, (11245), 9993 states have internal predecessors, (11245), 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) [2023-11-19 07:36:14,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9994 states to 9994 states and 11245 transitions. [2023-11-19 07:36:14,706 INFO L78 Accepts]: Start accepts. Automaton has 9994 states and 11245 transitions. Word has length 486 [2023-11-19 07:36:14,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:14,707 INFO L495 AbstractCegarLoop]: Abstraction has 9994 states and 11245 transitions. [2023-11-19 07:36:14,708 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) [2023-11-19 07:36:14,708 INFO L276 IsEmpty]: Start isEmpty. Operand 9994 states and 11245 transitions. [2023-11-19 07:36:14,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-11-19 07:36:14,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:14,749 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2023-11-19 07:36:14,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:36:14,749 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:14,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:14,750 INFO L85 PathProgramCache]: Analyzing trace with hash -236333549, now seen corresponding path program 1 times [2023-11-19 07:36:14,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:14,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869472888] [2023-11-19 07:36:14,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:14,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 586 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-11-19 07:36:15,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:15,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869472888] [2023-11-19 07:36:15,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869472888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:15,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:15,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:15,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448858129] [2023-11-19 07:36:15,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:15,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:15,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:15,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:15,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:15,665 INFO L87 Difference]: Start difference. First operand 9994 states and 11245 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2023-11-19 07:36:16,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:16,919 INFO L93 Difference]: Finished difference Result 22027 states and 24894 transitions. [2023-11-19 07:36:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:16,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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 522 [2023-11-19 07:36:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:16,948 INFO L225 Difference]: With dead ends: 22027 [2023-11-19 07:36:16,948 INFO L226 Difference]: Without dead ends: 12403 [2023-11-19 07:36:16,960 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 [2023-11-19 07:36:16,961 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 139 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:16,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 133 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:36:16,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12403 states. [2023-11-19 07:36:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12403 to 12215. [2023-11-19 07:36:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12215 states, 12214 states have (on average 1.1200261994432619) internal successors, (13680), 12214 states have internal predecessors, (13680), 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) [2023-11-19 07:36:17,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12215 states to 12215 states and 13680 transitions. [2023-11-19 07:36:17,165 INFO L78 Accepts]: Start accepts. Automaton has 12215 states and 13680 transitions. Word has length 522 [2023-11-19 07:36:17,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:17,166 INFO L495 AbstractCegarLoop]: Abstraction has 12215 states and 13680 transitions. [2023-11-19 07:36:17,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2023-11-19 07:36:17,166 INFO L276 IsEmpty]: Start isEmpty. Operand 12215 states and 13680 transitions. [2023-11-19 07:36:17,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-11-19 07:36:17,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:17,193 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2023-11-19 07:36:17,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:36:17,194 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:17,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:17,195 INFO L85 PathProgramCache]: Analyzing trace with hash 941049859, now seen corresponding path program 1 times [2023-11-19 07:36:17,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:17,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546214017] [2023-11-19 07:36:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:17,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:17,992 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 619 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-19 07:36:17,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:17,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546214017] [2023-11-19 07:36:17,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546214017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:17,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:17,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:17,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538999687] [2023-11-19 07:36:17,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:17,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:17,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:17,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:17,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:17,996 INFO L87 Difference]: Start difference. First operand 12215 states and 13680 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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) [2023-11-19 07:36:19,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:19,207 INFO L93 Difference]: Finished difference Result 27191 states and 30476 transitions. [2023-11-19 07:36:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:19,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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 526 [2023-11-19 07:36:19,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:19,247 INFO L225 Difference]: With dead ends: 27191 [2023-11-19 07:36:19,247 INFO L226 Difference]: Without dead ends: 15346 [2023-11-19 07:36:19,261 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 [2023-11-19 07:36:19,262 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 129 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:19,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 78 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:36:19,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15346 states. [2023-11-19 07:36:19,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15346 to 14415. [2023-11-19 07:36:19,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14415 states, 14414 states have (on average 1.1133620091577632) internal successors, (16048), 14414 states have internal predecessors, (16048), 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) [2023-11-19 07:36:19,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14415 states to 14415 states and 16048 transitions. [2023-11-19 07:36:19,599 INFO L78 Accepts]: Start accepts. Automaton has 14415 states and 16048 transitions. Word has length 526 [2023-11-19 07:36:19,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:19,600 INFO L495 AbstractCegarLoop]: Abstraction has 14415 states and 16048 transitions. [2023-11-19 07:36:19,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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) [2023-11-19 07:36:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand 14415 states and 16048 transitions. [2023-11-19 07:36:19,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-11-19 07:36:19,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:19,624 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:19,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:36:19,625 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:19,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:19,626 INFO L85 PathProgramCache]: Analyzing trace with hash -540773030, now seen corresponding path program 1 times [2023-11-19 07:36:19,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:19,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632622059] [2023-11-19 07:36:19,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:19,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 320 proven. 406 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-11-19 07:36:21,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632622059] [2023-11-19 07:36:21,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632622059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816009965] [2023-11-19 07:36:21,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:21,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:21,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:21,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:21,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:36:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:36:22,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:24,653 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 320 proven. 406 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-11-19 07:36:24,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 645 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2023-11-19 07:36:28,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816009965] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:28,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:36:28,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 9 [2023-11-19 07:36:28,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941771141] [2023-11-19 07:36:28,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:28,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:28,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:28,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:28,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:36:28,800 INFO L87 Difference]: Start difference. First operand 14415 states and 16048 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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) [2023-11-19 07:36:30,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:30,369 INFO L93 Difference]: Finished difference Result 29934 states and 33327 transitions. [2023-11-19 07:36:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:30,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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 532 [2023-11-19 07:36:30,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:30,399 INFO L225 Difference]: With dead ends: 29934 [2023-11-19 07:36:30,399 INFO L226 Difference]: Without dead ends: 15889 [2023-11-19 07:36:30,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1067 GetRequests, 1059 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:36:30,409 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 237 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:30,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 62 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 07:36:30,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15889 states. [2023-11-19 07:36:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15889 to 11839. [2023-11-19 07:36:30,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11839 states, 11838 states have (on average 1.1196992735259335) internal successors, (13255), 11838 states have internal predecessors, (13255), 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) [2023-11-19 07:36:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11839 states to 11839 states and 13255 transitions. [2023-11-19 07:36:30,681 INFO L78 Accepts]: Start accepts. Automaton has 11839 states and 13255 transitions. Word has length 532 [2023-11-19 07:36:30,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:30,681 INFO L495 AbstractCegarLoop]: Abstraction has 11839 states and 13255 transitions. [2023-11-19 07:36:30,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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) [2023-11-19 07:36:30,682 INFO L276 IsEmpty]: Start isEmpty. Operand 11839 states and 13255 transitions. [2023-11-19 07:36:30,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2023-11-19 07:36:30,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:30,702 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2023-11-19 07:36:30,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:30,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac82045c-7614-431d-bac2-9685074ca846/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:36:30,923 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:30,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:30,924 INFO L85 PathProgramCache]: Analyzing trace with hash -203637611, now seen corresponding path program 1 times [2023-11-19 07:36:30,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:30,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812702114] [2023-11-19 07:36:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:30,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-19 07:36:31,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:31,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812702114] [2023-11-19 07:36:31,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812702114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:31,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:31,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:31,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695005992] [2023-11-19 07:36:31,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:31,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:31,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:31,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:31,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:31,563 INFO L87 Difference]: Start difference. First operand 11839 states and 13255 transitions. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 3 states have internal predecessors, (390), 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) [2023-11-19 07:36:32,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:32,989 INFO L93 Difference]: Finished difference Result 29949 states and 33348 transitions. [2023-11-19 07:36:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:32,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 3 states have internal predecessors, (390), 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 598 [2023-11-19 07:36:32,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:33,019 INFO L225 Difference]: With dead ends: 29949 [2023-11-19 07:36:33,019 INFO L226 Difference]: Without dead ends: 18112 [2023-11-19 07:36:33,027 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 [2023-11-19 07:36:33,028 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 170 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:33,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 85 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 07:36:33,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18112 states. [2023-11-19 07:36:33,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18112 to 16445. [2023-11-19 07:36:33,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16445 states, 16444 states have (on average 1.1089151058136706) internal successors, (18235), 16444 states have internal predecessors, (18235), 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) [2023-11-19 07:36:33,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16445 states to 16445 states and 18235 transitions. [2023-11-19 07:36:33,385 INFO L78 Accepts]: Start accepts. Automaton has 16445 states and 18235 transitions. Word has length 598 [2023-11-19 07:36:33,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:33,385 INFO L495 AbstractCegarLoop]: Abstraction has 16445 states and 18235 transitions. [2023-11-19 07:36:33,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 3 states have internal predecessors, (390), 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) [2023-11-19 07:36:33,386 INFO L276 IsEmpty]: Start isEmpty. Operand 16445 states and 18235 transitions. [2023-11-19 07:36:33,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2023-11-19 07:36:33,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:33,406 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2023-11-19 07:36:33,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:36:33,406 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:33,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:33,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1263406380, now seen corresponding path program 1 times [2023-11-19 07:36:33,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:33,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151536190] [2023-11-19 07:36:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:33,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms