./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TreeArb.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TreeArb.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 889216697607a3ef71c51d8e84a75d701eba6a2c1ee6a0bec339c47f3476a23a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 04:11:05,748 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 04:11:05,835 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 04:11:05,841 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 04:11:05,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 04:11:05,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 04:11:05,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 04:11:05,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 04:11:05,882 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 04:11:05,884 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 04:11:05,885 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 04:11:05,885 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 04:11:05,885 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 04:11:05,886 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 04:11:05,886 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 04:11:05,888 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 04:11:05,888 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 04:11:05,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 04:11:05,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 04:11:05,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 04:11:05,889 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 04:11:05,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 04:11:05,893 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 04:11:05,893 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 04:11:05,893 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 04:11:05,894 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 04:11:05,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 04:11:05,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 04:11:05,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 04:11:05,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 04:11:05,895 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 04:11:05,895 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 04:11:05,895 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 04:11:05,895 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 04:11:05,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 04:11:05,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 04:11:05,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 04:11:05,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 04:11:05,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 04:11:05,897 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 889216697607a3ef71c51d8e84a75d701eba6a2c1ee6a0bec339c47f3476a23a [2024-10-24 04:11:06,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 04:11:06,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 04:11:06,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 04:11:06,207 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 04:11:06,207 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 04:11:06,208 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TreeArb.c [2024-10-24 04:11:07,734 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 04:11:08,070 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 04:11:08,077 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TreeArb.c [2024-10-24 04:11:08,107 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c089b05a/e1f3d3229dcc40608b46e9dc3fc2e0fd/FLAG6522339e4 [2024-10-24 04:11:08,129 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c089b05a/e1f3d3229dcc40608b46e9dc3fc2e0fd [2024-10-24 04:11:08,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 04:11:08,133 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 04:11:08,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 04:11:08,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 04:11:08,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 04:11:08,144 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:11:08" (1/1) ... [2024-10-24 04:11:08,145 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70642dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:08, skipping insertion in model container [2024-10-24 04:11:08,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:11:08" (1/1) ... [2024-10-24 04:11:08,233 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 04:11:08,464 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TreeArb.c[1249,1262] [2024-10-24 04:11:08,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 04:11:08,957 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 04:11:08,970 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TreeArb.c[1249,1262] [2024-10-24 04:11:09,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 04:11:09,144 INFO L204 MainTranslator]: Completed translation [2024-10-24 04:11:09,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:09 WrapperNode [2024-10-24 04:11:09,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 04:11:09,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 04:11:09,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 04:11:09,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 04:11:09,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:09" (1/1) ... [2024-10-24 04:11:09,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:09" (1/1) ... [2024-10-24 04:11:09,572 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3994 [2024-10-24 04:11:09,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 04:11:09,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 04:11:09,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 04:11:09,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 04:11:09,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:09" (1/1) ... [2024-10-24 04:11:09,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:09" (1/1) ... [2024-10-24 04:11:09,678 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:09" (1/1) ... [2024-10-24 04:11:09,904 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 04:11:09,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:09" (1/1) ... [2024-10-24 04:11:09,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:09" (1/1) ... [2024-10-24 04:11:10,060 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:09" (1/1) ... [2024-10-24 04:11:10,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:09" (1/1) ... [2024-10-24 04:11:10,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:09" (1/1) ... [2024-10-24 04:11:10,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:09" (1/1) ... [2024-10-24 04:11:10,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 04:11:10,197 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 04:11:10,198 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 04:11:10,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 04:11:10,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:09" (1/1) ... [2024-10-24 04:11:10,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 04:11:10,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 04:11:10,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 04:11:10,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 04:11:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 04:11:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 04:11:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 04:11:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 04:11:10,779 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 04:11:10,784 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 04:11:14,119 INFO L? ?]: Removed 2723 outVars from TransFormulas that were not future-live. [2024-10-24 04:11:14,120 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 04:11:14,226 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 04:11:14,226 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 04:11:14,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:11:14 BoogieIcfgContainer [2024-10-24 04:11:14,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 04:11:14,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 04:11:14,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 04:11:14,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 04:11:14,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:11:08" (1/3) ... [2024-10-24 04:11:14,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a761ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:11:14, skipping insertion in model container [2024-10-24 04:11:14,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:09" (2/3) ... [2024-10-24 04:11:14,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a761ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:11:14, skipping insertion in model container [2024-10-24 04:11:14,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:11:14" (3/3) ... [2024-10-24 04:11:14,236 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_TreeArb.c [2024-10-24 04:11:14,254 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 04:11:14,255 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 04:11:14,361 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 04:11:14,372 INFO L333 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, 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;@5be4210a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 04:11:14,372 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 04:11:14,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 723 states, 721 states have (on average 1.5006934812760055) internal successors, (1082), 722 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:14,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-24 04:11:14,397 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:14,398 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:14,399 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:14,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:14,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1088420479, now seen corresponding path program 1 times [2024-10-24 04:11:14,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:14,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966128425] [2024-10-24 04:11:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:14,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:15,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:15,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966128425] [2024-10-24 04:11:15,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966128425] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:15,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:15,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:11:15,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102013796] [2024-10-24 04:11:15,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:15,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 04:11:15,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:15,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 04:11:15,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:11:15,765 INFO L87 Difference]: Start difference. First operand has 723 states, 721 states have (on average 1.5006934812760055) internal successors, (1082), 722 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:15,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:15,931 INFO L93 Difference]: Finished difference Result 1386 states and 2076 transitions. [2024-10-24 04:11:15,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 04:11:15,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-24 04:11:15,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:15,953 INFO L225 Difference]: With dead ends: 1386 [2024-10-24 04:11:15,954 INFO L226 Difference]: Without dead ends: 724 [2024-10-24 04:11:15,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:11:15,965 INFO L432 NwaCegarLoop]: 1077 mSDtfsCounter, 0 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:15,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3226 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 04:11:15,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-10-24 04:11:16,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2024-10-24 04:11:16,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 1.4965421853388658) internal successors, (1082), 723 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:16,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1082 transitions. [2024-10-24 04:11:16,045 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1082 transitions. Word has length 84 [2024-10-24 04:11:16,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:16,046 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 1082 transitions. [2024-10-24 04:11:16,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:16,047 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1082 transitions. [2024-10-24 04:11:16,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-24 04:11:16,052 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:16,052 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:16,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 04:11:16,053 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:16,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:16,054 INFO L85 PathProgramCache]: Analyzing trace with hash 620399192, now seen corresponding path program 1 times [2024-10-24 04:11:16,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:16,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123529895] [2024-10-24 04:11:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:16,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:16,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:16,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123529895] [2024-10-24 04:11:16,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123529895] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:16,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:16,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:11:16,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764487159] [2024-10-24 04:11:16,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:16,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 04:11:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:16,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 04:11:16,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:11:16,446 INFO L87 Difference]: Start difference. First operand 724 states and 1082 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:16,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:16,505 INFO L93 Difference]: Finished difference Result 1389 states and 2076 transitions. [2024-10-24 04:11:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 04:11:16,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-10-24 04:11:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:16,510 INFO L225 Difference]: With dead ends: 1389 [2024-10-24 04:11:16,510 INFO L226 Difference]: Without dead ends: 726 [2024-10-24 04:11:16,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:11:16,514 INFO L432 NwaCegarLoop]: 1077 mSDtfsCounter, 0 mSDsluCounter, 2146 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:16,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3223 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 04:11:16,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-10-24 04:11:16,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2024-10-24 04:11:16,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 1.4951724137931035) internal successors, (1084), 725 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:16,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1084 transitions. [2024-10-24 04:11:16,546 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1084 transitions. Word has length 85 [2024-10-24 04:11:16,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:16,546 INFO L471 AbstractCegarLoop]: Abstraction has 726 states and 1084 transitions. [2024-10-24 04:11:16,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:16,547 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1084 transitions. [2024-10-24 04:11:16,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 04:11:16,548 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:16,549 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:16,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 04:11:16,549 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:16,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:16,554 INFO L85 PathProgramCache]: Analyzing trace with hash 954540346, now seen corresponding path program 1 times [2024-10-24 04:11:16,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:16,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142890833] [2024-10-24 04:11:16,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:16,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:17,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:17,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:17,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142890833] [2024-10-24 04:11:17,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142890833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:17,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:17,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 04:11:17,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344895962] [2024-10-24 04:11:17,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:17,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 04:11:17,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:17,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 04:11:17,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:17,477 INFO L87 Difference]: Start difference. First operand 726 states and 1084 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:17,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:17,609 INFO L93 Difference]: Finished difference Result 1398 states and 2088 transitions. [2024-10-24 04:11:17,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 04:11:17,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2024-10-24 04:11:17,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:17,614 INFO L225 Difference]: With dead ends: 1398 [2024-10-24 04:11:17,614 INFO L226 Difference]: Without dead ends: 733 [2024-10-24 04:11:17,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-24 04:11:17,618 INFO L432 NwaCegarLoop]: 1070 mSDtfsCounter, 1015 mSDsluCounter, 4271 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 5341 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:17,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 5341 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 04:11:17,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-10-24 04:11:17,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 732. [2024-10-24 04:11:17,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.493844049247606) internal successors, (1092), 731 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:17,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1092 transitions. [2024-10-24 04:11:17,644 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1092 transitions. Word has length 86 [2024-10-24 04:11:17,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:17,645 INFO L471 AbstractCegarLoop]: Abstraction has 732 states and 1092 transitions. [2024-10-24 04:11:17,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:17,646 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1092 transitions. [2024-10-24 04:11:17,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-24 04:11:17,650 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:17,650 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:17,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 04:11:17,651 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:17,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:17,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1090525275, now seen corresponding path program 1 times [2024-10-24 04:11:17,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:17,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027650854] [2024-10-24 04:11:17,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:17,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:18,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:18,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027650854] [2024-10-24 04:11:18,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027650854] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:18,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:18,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 04:11:18,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621870401] [2024-10-24 04:11:18,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:18,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 04:11:18,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:18,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 04:11:18,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 04:11:18,502 INFO L87 Difference]: Start difference. First operand 732 states and 1092 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:18,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:18,589 INFO L93 Difference]: Finished difference Result 1402 states and 2092 transitions. [2024-10-24 04:11:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 04:11:18,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2024-10-24 04:11:18,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:18,593 INFO L225 Difference]: With dead ends: 1402 [2024-10-24 04:11:18,593 INFO L226 Difference]: Without dead ends: 731 [2024-10-24 04:11:18,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 04:11:18,595 INFO L432 NwaCegarLoop]: 1073 mSDtfsCounter, 1 mSDsluCounter, 4280 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5353 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:18,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5353 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 04:11:18,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2024-10-24 04:11:18,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 731. [2024-10-24 04:11:18,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 1.4931506849315068) internal successors, (1090), 730 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:18,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1090 transitions. [2024-10-24 04:11:18,611 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1090 transitions. Word has length 87 [2024-10-24 04:11:18,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:18,612 INFO L471 AbstractCegarLoop]: Abstraction has 731 states and 1090 transitions. [2024-10-24 04:11:18,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:18,612 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1090 transitions. [2024-10-24 04:11:18,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-24 04:11:18,613 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:18,613 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:18,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 04:11:18,614 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:18,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:18,614 INFO L85 PathProgramCache]: Analyzing trace with hash 434866975, now seen corresponding path program 1 times [2024-10-24 04:11:18,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:18,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265053537] [2024-10-24 04:11:18,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:18,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:19,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:19,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265053537] [2024-10-24 04:11:19,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265053537] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:19,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:19,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 04:11:19,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849397721] [2024-10-24 04:11:19,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:19,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 04:11:19,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:19,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 04:11:19,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:19,207 INFO L87 Difference]: Start difference. First operand 731 states and 1090 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:19,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:19,305 INFO L93 Difference]: Finished difference Result 1436 states and 2142 transitions. [2024-10-24 04:11:19,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 04:11:19,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2024-10-24 04:11:19,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:19,309 INFO L225 Difference]: With dead ends: 1436 [2024-10-24 04:11:19,311 INFO L226 Difference]: Without dead ends: 766 [2024-10-24 04:11:19,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:19,314 INFO L432 NwaCegarLoop]: 1072 mSDtfsCounter, 29 mSDsluCounter, 5348 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 6420 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:19,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 6420 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 04:11:19,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2024-10-24 04:11:19,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2024-10-24 04:11:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 1.4901960784313726) internal successors, (1140), 765 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1140 transitions. [2024-10-24 04:11:19,331 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1140 transitions. Word has length 87 [2024-10-24 04:11:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:19,331 INFO L471 AbstractCegarLoop]: Abstraction has 766 states and 1140 transitions. [2024-10-24 04:11:19,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1140 transitions. [2024-10-24 04:11:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-24 04:11:19,333 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:19,333 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:19,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 04:11:19,334 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:19,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:19,334 INFO L85 PathProgramCache]: Analyzing trace with hash 580037094, now seen corresponding path program 1 times [2024-10-24 04:11:19,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:19,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837239252] [2024-10-24 04:11:19,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:19,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:20,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:20,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837239252] [2024-10-24 04:11:20,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837239252] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:20,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:20,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 04:11:20,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456021380] [2024-10-24 04:11:20,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:20,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 04:11:20,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:20,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 04:11:20,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 04:11:20,159 INFO L87 Difference]: Start difference. First operand 766 states and 1140 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:20,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:20,749 INFO L93 Difference]: Finished difference Result 2094 states and 3116 transitions. [2024-10-24 04:11:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 04:11:20,750 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2024-10-24 04:11:20,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:20,755 INFO L225 Difference]: With dead ends: 2094 [2024-10-24 04:11:20,756 INFO L226 Difference]: Without dead ends: 1389 [2024-10-24 04:11:20,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-24 04:11:20,759 INFO L432 NwaCegarLoop]: 1023 mSDtfsCounter, 2718 mSDsluCounter, 5109 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 6132 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:20,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2718 Valid, 6132 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 04:11:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2024-10-24 04:11:20,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 879. [2024-10-24 04:11:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 1.4874715261958997) internal successors, (1306), 878 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:20,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1306 transitions. [2024-10-24 04:11:20,788 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1306 transitions. Word has length 87 [2024-10-24 04:11:20,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:20,788 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1306 transitions. [2024-10-24 04:11:20,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:20,789 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1306 transitions. [2024-10-24 04:11:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-24 04:11:20,790 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:20,790 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:20,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 04:11:20,791 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:20,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:20,792 INFO L85 PathProgramCache]: Analyzing trace with hash -812423010, now seen corresponding path program 1 times [2024-10-24 04:11:20,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:20,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281368830] [2024-10-24 04:11:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:20,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:21,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:21,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281368830] [2024-10-24 04:11:21,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281368830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:21,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:21,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 04:11:21,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328673144] [2024-10-24 04:11:21,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:21,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 04:11:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 04:11:21,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:21,722 INFO L87 Difference]: Start difference. First operand 879 states and 1306 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:22,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:22,252 INFO L93 Difference]: Finished difference Result 2080 states and 3088 transitions. [2024-10-24 04:11:22,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 04:11:22,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2024-10-24 04:11:22,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:22,258 INFO L225 Difference]: With dead ends: 2080 [2024-10-24 04:11:22,258 INFO L226 Difference]: Without dead ends: 1339 [2024-10-24 04:11:22,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 04:11:22,260 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 2512 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:22,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2512 Valid, 5115 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 04:11:22,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2024-10-24 04:11:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 881. [2024-10-24 04:11:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 1.4840909090909091) internal successors, (1306), 880 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:22,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1306 transitions. [2024-10-24 04:11:22,282 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1306 transitions. Word has length 88 [2024-10-24 04:11:22,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:22,283 INFO L471 AbstractCegarLoop]: Abstraction has 881 states and 1306 transitions. [2024-10-24 04:11:22,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:22,283 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1306 transitions. [2024-10-24 04:11:22,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-24 04:11:22,284 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:22,284 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:22,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 04:11:22,284 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:22,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:22,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1594101854, now seen corresponding path program 1 times [2024-10-24 04:11:22,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:22,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943227705] [2024-10-24 04:11:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:22,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:22,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:22,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943227705] [2024-10-24 04:11:22,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943227705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:22,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:22,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 04:11:22,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368190652] [2024-10-24 04:11:22,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:22,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 04:11:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:22,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 04:11:22,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 04:11:22,534 INFO L87 Difference]: Start difference. First operand 881 states and 1306 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:22,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:22,587 INFO L93 Difference]: Finished difference Result 1679 states and 2491 transitions. [2024-10-24 04:11:22,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 04:11:22,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2024-10-24 04:11:22,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:22,591 INFO L225 Difference]: With dead ends: 1679 [2024-10-24 04:11:22,591 INFO L226 Difference]: Without dead ends: 945 [2024-10-24 04:11:22,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 04:11:22,593 INFO L432 NwaCegarLoop]: 1076 mSDtfsCounter, 28 mSDsluCounter, 3220 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 4296 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:22,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 4296 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 04:11:22,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2024-10-24 04:11:22,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 945. [2024-10-24 04:11:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 944 states have (on average 1.4809322033898304) internal successors, (1398), 944 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1398 transitions. [2024-10-24 04:11:22,612 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1398 transitions. Word has length 88 [2024-10-24 04:11:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:22,613 INFO L471 AbstractCegarLoop]: Abstraction has 945 states and 1398 transitions. [2024-10-24 04:11:22,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:22,613 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1398 transitions. [2024-10-24 04:11:22,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-24 04:11:22,614 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:22,614 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:22,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 04:11:22,615 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:22,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:22,615 INFO L85 PathProgramCache]: Analyzing trace with hash 18569147, now seen corresponding path program 1 times [2024-10-24 04:11:22,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:22,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541005734] [2024-10-24 04:11:22,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:22,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:23,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:23,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541005734] [2024-10-24 04:11:23,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541005734] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:23,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:23,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 04:11:23,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756571874] [2024-10-24 04:11:23,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:23,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 04:11:23,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:23,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 04:11:23,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:23,282 INFO L87 Difference]: Start difference. First operand 945 states and 1398 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:23,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:23,794 INFO L93 Difference]: Finished difference Result 2255 states and 3336 transitions. [2024-10-24 04:11:23,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 04:11:23,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2024-10-24 04:11:23,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:23,802 INFO L225 Difference]: With dead ends: 2255 [2024-10-24 04:11:23,802 INFO L226 Difference]: Without dead ends: 1445 [2024-10-24 04:11:23,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 04:11:23,806 INFO L432 NwaCegarLoop]: 1023 mSDtfsCounter, 2636 mSDsluCounter, 4087 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2636 SdHoareTripleChecker+Valid, 5110 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:23,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2636 Valid, 5110 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 04:11:23,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2024-10-24 04:11:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 947. [2024-10-24 04:11:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 946 states have (on average 1.477801268498943) internal successors, (1398), 946 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1398 transitions. [2024-10-24 04:11:23,835 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1398 transitions. Word has length 88 [2024-10-24 04:11:23,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:23,836 INFO L471 AbstractCegarLoop]: Abstraction has 947 states and 1398 transitions. [2024-10-24 04:11:23,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:23,836 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1398 transitions. [2024-10-24 04:11:23,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-24 04:11:23,837 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:23,837 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:23,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 04:11:23,838 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:23,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:23,842 INFO L85 PathProgramCache]: Analyzing trace with hash -881939155, now seen corresponding path program 1 times [2024-10-24 04:11:23,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:23,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131540921] [2024-10-24 04:11:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:23,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:24,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:24,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131540921] [2024-10-24 04:11:24,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131540921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:24,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:24,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 04:11:24,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795530944] [2024-10-24 04:11:24,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:24,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 04:11:24,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:24,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 04:11:24,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:24,610 INFO L87 Difference]: Start difference. First operand 947 states and 1398 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:25,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:25,051 INFO L93 Difference]: Finished difference Result 2070 states and 3058 transitions. [2024-10-24 04:11:25,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 04:11:25,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2024-10-24 04:11:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:25,057 INFO L225 Difference]: With dead ends: 2070 [2024-10-24 04:11:25,057 INFO L226 Difference]: Without dead ends: 1287 [2024-10-24 04:11:25,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 04:11:25,060 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 2146 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:25,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2146 Valid, 5115 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 04:11:25,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2024-10-24 04:11:25,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 949. [2024-10-24 04:11:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 948 states have (on average 1.4746835443037976) internal successors, (1398), 948 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1398 transitions. [2024-10-24 04:11:25,085 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1398 transitions. Word has length 89 [2024-10-24 04:11:25,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:25,085 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1398 transitions. [2024-10-24 04:11:25,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:25,086 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1398 transitions. [2024-10-24 04:11:25,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-24 04:11:25,087 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:25,087 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:25,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 04:11:25,087 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:25,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash -424143898, now seen corresponding path program 1 times [2024-10-24 04:11:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:25,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560132074] [2024-10-24 04:11:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:25,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:25,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560132074] [2024-10-24 04:11:25,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560132074] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:25,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:25,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 04:11:25,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365009025] [2024-10-24 04:11:25,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:25,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 04:11:25,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:25,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 04:11:25,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:25,783 INFO L87 Difference]: Start difference. First operand 949 states and 1398 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:26,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:26,267 INFO L93 Difference]: Finished difference Result 2283 states and 3366 transitions. [2024-10-24 04:11:26,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 04:11:26,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2024-10-24 04:11:26,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:26,273 INFO L225 Difference]: With dead ends: 2283 [2024-10-24 04:11:26,274 INFO L226 Difference]: Without dead ends: 1461 [2024-10-24 04:11:26,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 04:11:26,276 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 2666 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:26,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2666 Valid, 5115 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 04:11:26,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2024-10-24 04:11:26,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 951. [2024-10-24 04:11:26,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 950 states have (on average 1.471578947368421) internal successors, (1398), 950 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1398 transitions. [2024-10-24 04:11:26,301 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1398 transitions. Word has length 89 [2024-10-24 04:11:26,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:26,302 INFO L471 AbstractCegarLoop]: Abstraction has 951 states and 1398 transitions. [2024-10-24 04:11:26,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1398 transitions. [2024-10-24 04:11:26,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-24 04:11:26,303 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:26,303 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:26,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 04:11:26,304 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:26,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:26,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1121669815, now seen corresponding path program 1 times [2024-10-24 04:11:26,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:26,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031232145] [2024-10-24 04:11:26,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:26,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:26,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:26,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031232145] [2024-10-24 04:11:26,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031232145] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:26,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:26,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 04:11:26,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846691839] [2024-10-24 04:11:26,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:26,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 04:11:26,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:26,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 04:11:26,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 04:11:26,937 INFO L87 Difference]: Start difference. First operand 951 states and 1398 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:27,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:27,410 INFO L93 Difference]: Finished difference Result 2169 states and 3189 transitions. [2024-10-24 04:11:27,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 04:11:27,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2024-10-24 04:11:27,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:27,416 INFO L225 Difference]: With dead ends: 2169 [2024-10-24 04:11:27,416 INFO L226 Difference]: Without dead ends: 1290 [2024-10-24 04:11:27,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-24 04:11:27,419 INFO L432 NwaCegarLoop]: 1023 mSDtfsCounter, 2176 mSDsluCounter, 5109 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 6132 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:27,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2176 Valid, 6132 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 04:11:27,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2024-10-24 04:11:27,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 964. [2024-10-24 04:11:27,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 963 states have (on average 1.470404984423676) internal successors, (1416), 963 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:27,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1416 transitions. [2024-10-24 04:11:27,440 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1416 transitions. Word has length 89 [2024-10-24 04:11:27,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:27,440 INFO L471 AbstractCegarLoop]: Abstraction has 964 states and 1416 transitions. [2024-10-24 04:11:27,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:27,441 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1416 transitions. [2024-10-24 04:11:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-24 04:11:27,441 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:27,442 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:27,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 04:11:27,442 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:27,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:27,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1876464855, now seen corresponding path program 1 times [2024-10-24 04:11:27,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:27,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208614857] [2024-10-24 04:11:27,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:27,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:28,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:28,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208614857] [2024-10-24 04:11:28,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208614857] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:28,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:28,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:11:28,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244895161] [2024-10-24 04:11:28,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:28,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 04:11:28,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 04:11:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 04:11:28,024 INFO L87 Difference]: Start difference. First operand 964 states and 1416 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:28,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:28,367 INFO L93 Difference]: Finished difference Result 1981 states and 2920 transitions. [2024-10-24 04:11:28,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 04:11:28,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-10-24 04:11:28,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:28,372 INFO L225 Difference]: With dead ends: 1981 [2024-10-24 04:11:28,373 INFO L226 Difference]: Without dead ends: 1198 [2024-10-24 04:11:28,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:28,376 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 1953 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:28,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1953 Valid, 3077 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 04:11:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2024-10-24 04:11:28,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 950. [2024-10-24 04:11:28,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 949 states have (on average 1.4710221285563752) internal successors, (1396), 949 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1396 transitions. [2024-10-24 04:11:28,402 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1396 transitions. Word has length 90 [2024-10-24 04:11:28,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:28,403 INFO L471 AbstractCegarLoop]: Abstraction has 950 states and 1396 transitions. [2024-10-24 04:11:28,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:28,403 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1396 transitions. [2024-10-24 04:11:28,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-24 04:11:28,404 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:28,405 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:28,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 04:11:28,406 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:28,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:28,406 INFO L85 PathProgramCache]: Analyzing trace with hash -199225740, now seen corresponding path program 1 times [2024-10-24 04:11:28,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:28,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788177606] [2024-10-24 04:11:28,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:28,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:29,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:29,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788177606] [2024-10-24 04:11:29,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788177606] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:29,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:29,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 04:11:29,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557766911] [2024-10-24 04:11:29,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:29,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 04:11:29,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:29,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 04:11:29,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 04:11:29,384 INFO L87 Difference]: Start difference. First operand 950 states and 1396 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:29,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:29,950 INFO L93 Difference]: Finished difference Result 2214 states and 3252 transitions. [2024-10-24 04:11:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 04:11:29,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-10-24 04:11:29,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:29,955 INFO L225 Difference]: With dead ends: 2214 [2024-10-24 04:11:29,956 INFO L226 Difference]: Without dead ends: 1388 [2024-10-24 04:11:29,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-10-24 04:11:29,958 INFO L432 NwaCegarLoop]: 1023 mSDtfsCounter, 2480 mSDsluCounter, 6127 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2480 SdHoareTripleChecker+Valid, 7150 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:29,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2480 Valid, 7150 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 04:11:29,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2024-10-24 04:11:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 968. [2024-10-24 04:11:29,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 1.468459152016546) internal successors, (1420), 967 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:29,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1420 transitions. [2024-10-24 04:11:29,982 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1420 transitions. Word has length 90 [2024-10-24 04:11:29,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:29,982 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1420 transitions. [2024-10-24 04:11:29,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:29,982 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1420 transitions. [2024-10-24 04:11:29,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-24 04:11:29,983 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:29,983 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:29,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 04:11:29,984 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:29,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:29,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1761932326, now seen corresponding path program 1 times [2024-10-24 04:11:29,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:29,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047359182] [2024-10-24 04:11:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:29,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:30,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:30,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047359182] [2024-10-24 04:11:30,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047359182] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:30,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:30,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 04:11:30,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941335302] [2024-10-24 04:11:30,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:30,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 04:11:30,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:30,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 04:11:30,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:30,619 INFO L87 Difference]: Start difference. First operand 968 states and 1420 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:31,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:31,016 INFO L93 Difference]: Finished difference Result 2169 states and 3183 transitions. [2024-10-24 04:11:31,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 04:11:31,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-10-24 04:11:31,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:31,021 INFO L225 Difference]: With dead ends: 2169 [2024-10-24 04:11:31,021 INFO L226 Difference]: Without dead ends: 1269 [2024-10-24 04:11:31,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 04:11:31,023 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 2134 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2134 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:31,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2134 Valid, 5115 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 04:11:31,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2024-10-24 04:11:31,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 969. [2024-10-24 04:11:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 968 states have (on average 1.4669421487603307) internal successors, (1420), 968 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1420 transitions. [2024-10-24 04:11:31,045 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1420 transitions. Word has length 90 [2024-10-24 04:11:31,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:31,045 INFO L471 AbstractCegarLoop]: Abstraction has 969 states and 1420 transitions. [2024-10-24 04:11:31,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:31,046 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1420 transitions. [2024-10-24 04:11:31,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 04:11:31,047 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:31,047 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:31,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 04:11:31,048 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:31,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:31,048 INFO L85 PathProgramCache]: Analyzing trace with hash 698468340, now seen corresponding path program 1 times [2024-10-24 04:11:31,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:31,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284397784] [2024-10-24 04:11:31,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:31,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:31,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:31,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284397784] [2024-10-24 04:11:31,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284397784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:31,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:31,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 04:11:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819925290] [2024-10-24 04:11:31,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:31,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 04:11:31,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 04:11:31,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:31,640 INFO L87 Difference]: Start difference. First operand 969 states and 1420 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:32,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:32,060 INFO L93 Difference]: Finished difference Result 2243 states and 3294 transitions. [2024-10-24 04:11:32,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 04:11:32,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2024-10-24 04:11:32,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:32,065 INFO L225 Difference]: With dead ends: 2243 [2024-10-24 04:11:32,065 INFO L226 Difference]: Without dead ends: 1391 [2024-10-24 04:11:32,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 04:11:32,067 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 2476 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2476 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:32,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2476 Valid, 5115 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 04:11:32,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2024-10-24 04:11:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 971. [2024-10-24 04:11:32,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.4639175257731958) internal successors, (1420), 970 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:32,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1420 transitions. [2024-10-24 04:11:32,088 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1420 transitions. Word has length 91 [2024-10-24 04:11:32,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:32,088 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1420 transitions. [2024-10-24 04:11:32,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:32,088 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1420 transitions. [2024-10-24 04:11:32,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 04:11:32,089 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:32,089 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:32,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 04:11:32,090 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:32,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:32,090 INFO L85 PathProgramCache]: Analyzing trace with hash -67579682, now seen corresponding path program 1 times [2024-10-24 04:11:32,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:32,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680824375] [2024-10-24 04:11:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:32,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:32,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680824375] [2024-10-24 04:11:32,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680824375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:32,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:32,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 04:11:32,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558673046] [2024-10-24 04:11:32,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:32,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 04:11:32,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:32,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 04:11:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:32,624 INFO L87 Difference]: Start difference. First operand 971 states and 1420 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:33,032 INFO L93 Difference]: Finished difference Result 2115 states and 3093 transitions. [2024-10-24 04:11:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 04:11:33,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2024-10-24 04:11:33,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:33,037 INFO L225 Difference]: With dead ends: 2115 [2024-10-24 04:11:33,037 INFO L226 Difference]: Without dead ends: 1208 [2024-10-24 04:11:33,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 04:11:33,039 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 1936 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:33,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1936 Valid, 5115 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 04:11:33,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2024-10-24 04:11:33,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 972. [2024-10-24 04:11:33,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.462409886714727) internal successors, (1420), 971 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1420 transitions. [2024-10-24 04:11:33,057 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1420 transitions. Word has length 91 [2024-10-24 04:11:33,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:33,057 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1420 transitions. [2024-10-24 04:11:33,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:33,058 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1420 transitions. [2024-10-24 04:11:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 04:11:33,059 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:33,059 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:33,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 04:11:33,059 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:33,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:33,060 INFO L85 PathProgramCache]: Analyzing trace with hash -875690291, now seen corresponding path program 1 times [2024-10-24 04:11:33,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:33,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782048273] [2024-10-24 04:11:33,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:33,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:33,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:33,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782048273] [2024-10-24 04:11:33,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782048273] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:33,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:33,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 04:11:33,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267938807] [2024-10-24 04:11:33,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:33,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 04:11:33,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:33,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 04:11:33,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:33,739 INFO L87 Difference]: Start difference. First operand 972 states and 1420 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:34,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:34,154 INFO L93 Difference]: Finished difference Result 2096 states and 3070 transitions. [2024-10-24 04:11:34,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 04:11:34,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2024-10-24 04:11:34,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:34,160 INFO L225 Difference]: With dead ends: 2096 [2024-10-24 04:11:34,160 INFO L226 Difference]: Without dead ends: 1264 [2024-10-24 04:11:34,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 04:11:34,162 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 2066 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:34,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2066 Valid, 5115 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 04:11:34,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2024-10-24 04:11:34,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 972. [2024-10-24 04:11:34,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.458290422245108) internal successors, (1416), 971 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:34,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1416 transitions. [2024-10-24 04:11:34,180 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1416 transitions. Word has length 92 [2024-10-24 04:11:34,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:34,180 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1416 transitions. [2024-10-24 04:11:34,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:34,180 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1416 transitions. [2024-10-24 04:11:34,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 04:11:34,181 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:34,182 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:34,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 04:11:34,182 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:34,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:34,182 INFO L85 PathProgramCache]: Analyzing trace with hash 58032511, now seen corresponding path program 1 times [2024-10-24 04:11:34,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:34,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739857784] [2024-10-24 04:11:34,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:34,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:34,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:34,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739857784] [2024-10-24 04:11:34,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739857784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:34,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:34,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:11:34,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413012749] [2024-10-24 04:11:34,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:34,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 04:11:34,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:34,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 04:11:34,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 04:11:34,588 INFO L87 Difference]: Start difference. First operand 972 states and 1416 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:34,890 INFO L93 Difference]: Finished difference Result 2057 states and 3006 transitions. [2024-10-24 04:11:34,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 04:11:34,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2024-10-24 04:11:34,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:34,894 INFO L225 Difference]: With dead ends: 2057 [2024-10-24 04:11:34,895 INFO L226 Difference]: Without dead ends: 1150 [2024-10-24 04:11:34,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:34,900 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 1935 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:34,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1935 Valid, 3077 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 04:11:34,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2024-10-24 04:11:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 902. [2024-10-24 04:11:34,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 901 states have (on average 1.46503884572697) internal successors, (1320), 901 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1320 transitions. [2024-10-24 04:11:34,922 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1320 transitions. Word has length 92 [2024-10-24 04:11:34,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:34,923 INFO L471 AbstractCegarLoop]: Abstraction has 902 states and 1320 transitions. [2024-10-24 04:11:34,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:34,923 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1320 transitions. [2024-10-24 04:11:34,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 04:11:34,924 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:34,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:34,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 04:11:34,925 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:34,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:34,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1247142796, now seen corresponding path program 1 times [2024-10-24 04:11:34,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:34,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274661525] [2024-10-24 04:11:34,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:34,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:35,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:35,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274661525] [2024-10-24 04:11:35,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274661525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:35,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:35,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:11:35,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036189158] [2024-10-24 04:11:35,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:35,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 04:11:35,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:35,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 04:11:35,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 04:11:35,370 INFO L87 Difference]: Start difference. First operand 902 states and 1320 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:35,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:35,657 INFO L93 Difference]: Finished difference Result 1950 states and 2870 transitions. [2024-10-24 04:11:35,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 04:11:35,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2024-10-24 04:11:35,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:35,661 INFO L225 Difference]: With dead ends: 1950 [2024-10-24 04:11:35,661 INFO L226 Difference]: Without dead ends: 1147 [2024-10-24 04:11:35,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:35,663 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 2025 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:35,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 3077 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 04:11:35,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2024-10-24 04:11:35,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 860. [2024-10-24 04:11:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 859 states have (on average 1.4714784633294529) internal successors, (1264), 859 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1264 transitions. [2024-10-24 04:11:35,679 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1264 transitions. Word has length 93 [2024-10-24 04:11:35,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:35,680 INFO L471 AbstractCegarLoop]: Abstraction has 860 states and 1264 transitions. [2024-10-24 04:11:35,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:35,680 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1264 transitions. [2024-10-24 04:11:35,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-10-24 04:11:35,687 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:35,688 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:35,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 04:11:35,688 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:35,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:35,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1210471471, now seen corresponding path program 1 times [2024-10-24 04:11:35,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:35,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712252725] [2024-10-24 04:11:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:35,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:49,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:49,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712252725] [2024-10-24 04:11:49,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712252725] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:49,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:49,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 04:11:49,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790578139] [2024-10-24 04:11:49,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:49,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 04:11:49,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:49,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 04:11:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 04:11:49,699 INFO L87 Difference]: Start difference. First operand 860 states and 1264 transitions. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:50,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:50,154 INFO L93 Difference]: Finished difference Result 2228 states and 3297 transitions. [2024-10-24 04:11:50,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 04:11:50,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 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 418 [2024-10-24 04:11:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:50,157 INFO L225 Difference]: With dead ends: 2228 [2024-10-24 04:11:50,157 INFO L226 Difference]: Without dead ends: 864 [2024-10-24 04:11:50,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:11:50,159 INFO L432 NwaCegarLoop]: 1277 mSDtfsCounter, 528 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 4640 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:50,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 4640 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 04:11:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2024-10-24 04:11:50,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 862. [2024-10-24 04:11:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 1.470383275261324) internal successors, (1266), 861 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:50,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1266 transitions. [2024-10-24 04:11:50,234 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1266 transitions. Word has length 418 [2024-10-24 04:11:50,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:50,234 INFO L471 AbstractCegarLoop]: Abstraction has 862 states and 1266 transitions. [2024-10-24 04:11:50,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1266 transitions. [2024-10-24 04:11:50,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-10-24 04:11:50,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:50,246 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:50,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 04:11:50,247 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:50,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:50,248 INFO L85 PathProgramCache]: Analyzing trace with hash -829954929, now seen corresponding path program 1 times [2024-10-24 04:11:50,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:50,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109321066] [2024-10-24 04:11:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:50,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:11:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:11:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:11:56,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:11:56,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109321066] [2024-10-24 04:11:56,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109321066] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:11:56,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:11:56,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 04:11:56,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734721973] [2024-10-24 04:11:56,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:11:56,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 04:11:56,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:11:56,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 04:11:56,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 04:11:56,149 INFO L87 Difference]: Start difference. First operand 862 states and 1266 transitions. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:56,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:11:56,681 INFO L93 Difference]: Finished difference Result 1605 states and 2369 transitions. [2024-10-24 04:11:56,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 04:11:56,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 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 419 [2024-10-24 04:11:56,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:11:56,689 INFO L225 Difference]: With dead ends: 1605 [2024-10-24 04:11:56,693 INFO L226 Difference]: Without dead ends: 866 [2024-10-24 04:11:56,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 04:11:56,695 INFO L432 NwaCegarLoop]: 813 mSDtfsCounter, 999 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 04:11:56,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 2435 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 04:11:56,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2024-10-24 04:11:56,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 864. [2024-10-24 04:11:56,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 1.4692931633835458) internal successors, (1268), 863 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:56,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1268 transitions. [2024-10-24 04:11:56,712 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1268 transitions. Word has length 419 [2024-10-24 04:11:56,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:11:56,713 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 1268 transitions. [2024-10-24 04:11:56,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:11:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1268 transitions. [2024-10-24 04:11:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-10-24 04:11:56,719 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:11:56,720 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:11:56,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 04:11:56,720 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:11:56,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:11:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1401586396, now seen corresponding path program 1 times [2024-10-24 04:11:56,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:11:56,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449562560] [2024-10-24 04:11:56,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:11:56,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:12:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:12:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:12:08,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:12:08,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449562560] [2024-10-24 04:12:08,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449562560] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:12:08,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:12:08,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 04:12:08,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904618543] [2024-10-24 04:12:08,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:12:08,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 04:12:08,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:12:08,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 04:12:08,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 04:12:08,516 INFO L87 Difference]: Start difference. First operand 864 states and 1268 transitions. Second operand has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:12:09,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:12:09,108 INFO L93 Difference]: Finished difference Result 1618 states and 2386 transitions. [2024-10-24 04:12:09,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 04:12:09,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 0 states have call successors, (0), 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 420 [2024-10-24 04:12:09,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:12:09,115 INFO L225 Difference]: With dead ends: 1618 [2024-10-24 04:12:09,115 INFO L226 Difference]: Without dead ends: 877 [2024-10-24 04:12:09,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 04:12:09,117 INFO L432 NwaCegarLoop]: 811 mSDtfsCounter, 1085 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 04:12:09,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 3241 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 04:12:09,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-10-24 04:12:09,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 874. [2024-10-24 04:12:09,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 1.4684994272623138) internal successors, (1282), 873 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:12:09,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1282 transitions. [2024-10-24 04:12:09,132 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1282 transitions. Word has length 420 [2024-10-24 04:12:09,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:12:09,133 INFO L471 AbstractCegarLoop]: Abstraction has 874 states and 1282 transitions. [2024-10-24 04:12:09,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:12:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1282 transitions. [2024-10-24 04:12:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-10-24 04:12:09,137 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:12:09,137 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:12:09,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 04:12:09,137 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:12:09,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:12:09,138 INFO L85 PathProgramCache]: Analyzing trace with hash 863795763, now seen corresponding path program 1 times [2024-10-24 04:12:09,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:12:09,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434977973] [2024-10-24 04:12:09,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:12:09,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms