./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Arbiter.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Arbiter.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 daa141bceaab1dce596dec41c05d7428109f60bb62645942d09e8fdb56f4587f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 17:26:11,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 17:26:11,808 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-18 17:26:11,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 17:26:11,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 17:26:11,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 17:26:11,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 17:26:11,827 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 17:26:11,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 17:26:11,828 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 17:26:11,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 17:26:11,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 17:26:11,829 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 17:26:11,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 17:26:11,830 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 17:26:11,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 17:26:11,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 17:26:11,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 17:26:11,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 17:26:11,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 17:26:11,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 17:26:11,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 17:26:11,833 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 17:26:11,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 17:26:11,833 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 17:26:11,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 17:26:11,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 17:26:11,834 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 17:26:11,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 17:26:11,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 17:26:11,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 17:26:11,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 17:26:11,836 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 17:26:11,836 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 17:26:11,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 17:26:11,836 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 17:26:11,837 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 17:26:11,837 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 17:26:11,837 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 17:26:11,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> daa141bceaab1dce596dec41c05d7428109f60bb62645942d09e8fdb56f4587f [2024-11-18 17:26:12,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 17:26:12,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 17:26:12,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 17:26:12,062 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 17:26:12,064 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 17:26:12,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Arbiter.c [2024-11-18 17:26:13,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 17:26:13,694 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 17:26:13,694 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Arbiter.c [2024-11-18 17:26:13,712 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/654902c23/655b2408cce748e8a54ef1a6ceae80d1/FLAG16077bab2 [2024-11-18 17:26:13,728 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/654902c23/655b2408cce748e8a54ef1a6ceae80d1 [2024-11-18 17:26:13,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 17:26:13,733 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 17:26:13,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 17:26:13,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 17:26:13,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 17:26:13,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:26:13" (1/1) ... [2024-11-18 17:26:13,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45168c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:13, skipping insertion in model container [2024-11-18 17:26:13,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:26:13" (1/1) ... [2024-11-18 17:26:13,789 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 17:26:14,000 WARN L250 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_Arbiter.c[1249,1262] [2024-11-18 17:26:14,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 17:26:14,184 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 17:26:14,197 WARN L250 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_Arbiter.c[1249,1262] [2024-11-18 17:26:14,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 17:26:14,318 INFO L204 MainTranslator]: Completed translation [2024-11-18 17:26:14,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:14 WrapperNode [2024-11-18 17:26:14,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 17:26:14,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 17:26:14,319 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 17:26:14,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 17:26:14,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:14" (1/1) ... [2024-11-18 17:26:14,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:14" (1/1) ... [2024-11-18 17:26:14,458 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1673 [2024-11-18 17:26:14,458 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 17:26:14,459 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 17:26:14,459 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 17:26:14,459 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 17:26:14,468 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:14" (1/1) ... [2024-11-18 17:26:14,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:14" (1/1) ... [2024-11-18 17:26:14,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:14" (1/1) ... [2024-11-18 17:26:14,552 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]. [2024-11-18 17:26:14,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:14" (1/1) ... [2024-11-18 17:26:14,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:14" (1/1) ... [2024-11-18 17:26:14,600 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:14" (1/1) ... [2024-11-18 17:26:14,610 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:14" (1/1) ... [2024-11-18 17:26:14,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:14" (1/1) ... [2024-11-18 17:26:14,645 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:14" (1/1) ... [2024-11-18 17:26:14,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 17:26:14,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 17:26:14,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 17:26:14,674 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 17:26:14,675 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:14" (1/1) ... [2024-11-18 17:26:14,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 17:26:14,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 17:26:14,706 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) [2024-11-18 17:26:14,709 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 [2024-11-18 17:26:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 17:26:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 17:26:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 17:26:14,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 17:26:15,016 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 17:26:15,018 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 17:26:16,156 INFO L? ?]: Removed 1116 outVars from TransFormulas that were not future-live. [2024-11-18 17:26:16,157 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 17:26:16,174 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 17:26:16,176 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 17:26:16,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:26:16 BoogieIcfgContainer [2024-11-18 17:26:16,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 17:26:16,179 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 17:26:16,180 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 17:26:16,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 17:26:16,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:26:13" (1/3) ... [2024-11-18 17:26:16,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2569e814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:26:16, skipping insertion in model container [2024-11-18 17:26:16,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:14" (2/3) ... [2024-11-18 17:26:16,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2569e814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:26:16, skipping insertion in model container [2024-11-18 17:26:16,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:26:16" (3/3) ... [2024-11-18 17:26:16,185 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Arbiter.c [2024-11-18 17:26:16,201 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 17:26:16,201 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 17:26:16,266 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 17:26:16,271 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;@40f1af35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 17:26:16,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 17:26:16,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 266 states, 264 states have (on average 1.496212121212121) internal successors, (395), 265 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:16,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-18 17:26:16,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:16,283 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] [2024-11-18 17:26:16,283 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:16,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:16,288 INFO L85 PathProgramCache]: Analyzing trace with hash -219474441, now seen corresponding path program 1 times [2024-11-18 17:26:16,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:16,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025257457] [2024-11-18 17:26:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:16,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:17,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:17,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025257457] [2024-11-18 17:26:17,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025257457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:17,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:17,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 17:26:17,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857026807] [2024-11-18 17:26:17,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:17,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 17:26:17,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:17,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 17:26:17,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 17:26:17,064 INFO L87 Difference]: Start difference. First operand has 266 states, 264 states have (on average 1.496212121212121) internal successors, (395), 265 states have internal predecessors, (395), 0 states have call successors, (0), 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 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:17,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:17,134 INFO L93 Difference]: Finished difference Result 465 states and 693 transitions. [2024-11-18 17:26:17,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 17:26:17,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-11-18 17:26:17,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:17,148 INFO L225 Difference]: With dead ends: 465 [2024-11-18 17:26:17,148 INFO L226 Difference]: Without dead ends: 265 [2024-11-18 17:26:17,151 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 [2024-11-18 17:26:17,156 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 0 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:17,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1161 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 17:26:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-18 17:26:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2024-11-18 17:26:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.4886363636363635) internal successors, (393), 264 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 393 transitions. [2024-11-18 17:26:17,209 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 393 transitions. Word has length 63 [2024-11-18 17:26:17,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:17,209 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 393 transitions. [2024-11-18 17:26:17,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:17,210 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 393 transitions. [2024-11-18 17:26:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-18 17:26:17,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:17,213 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] [2024-11-18 17:26:17,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 17:26:17,214 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:17,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:17,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1787922451, now seen corresponding path program 1 times [2024-11-18 17:26:17,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:17,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066646350] [2024-11-18 17:26:17,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:17,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:17,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:17,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066646350] [2024-11-18 17:26:17,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066646350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:17,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:17,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 17:26:17,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806159150] [2024-11-18 17:26:17,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:17,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 17:26:17,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:17,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 17:26:17,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 17:26:17,472 INFO L87 Difference]: Start difference. First operand 265 states and 393 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:17,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:17,512 INFO L93 Difference]: Finished difference Result 466 states and 691 transitions. [2024-11-18 17:26:17,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 17:26:17,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-11-18 17:26:17,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:17,514 INFO L225 Difference]: With dead ends: 466 [2024-11-18 17:26:17,516 INFO L226 Difference]: Without dead ends: 267 [2024-11-18 17:26:17,517 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 [2024-11-18 17:26:17,518 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 0 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:17,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1157 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 17:26:17,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-18 17:26:17,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2024-11-18 17:26:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.4849624060150375) internal successors, (395), 266 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:17,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 395 transitions. [2024-11-18 17:26:17,533 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 395 transitions. Word has length 64 [2024-11-18 17:26:17,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:17,534 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 395 transitions. [2024-11-18 17:26:17,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:17,535 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 395 transitions. [2024-11-18 17:26:17,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 17:26:17,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:17,538 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] [2024-11-18 17:26:17,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 17:26:17,538 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:17,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:17,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1506944432, now seen corresponding path program 1 times [2024-11-18 17:26:17,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:17,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561796337] [2024-11-18 17:26:17,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:17,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:18,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:18,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561796337] [2024-11-18 17:26:18,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561796337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:18,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:18,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:26:18,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176589304] [2024-11-18 17:26:18,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:18,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:26:18,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:18,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:26:18,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:26:18,064 INFO L87 Difference]: Start difference. First operand 267 states and 395 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:18,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:18,127 INFO L93 Difference]: Finished difference Result 473 states and 700 transitions. [2024-11-18 17:26:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 17:26:18,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-11-18 17:26:18,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:18,131 INFO L225 Difference]: With dead ends: 473 [2024-11-18 17:26:18,131 INFO L226 Difference]: Without dead ends: 272 [2024-11-18 17:26:18,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:26:18,133 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 1 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:18,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1909 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 17:26:18,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-18 17:26:18,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-11-18 17:26:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.4797047970479704) internal successors, (401), 271 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 401 transitions. [2024-11-18 17:26:18,142 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 401 transitions. Word has length 65 [2024-11-18 17:26:18,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:18,142 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 401 transitions. [2024-11-18 17:26:18,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:18,143 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 401 transitions. [2024-11-18 17:26:18,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 17:26:18,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:18,144 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] [2024-11-18 17:26:18,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 17:26:18,144 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:18,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:18,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1583420161, now seen corresponding path program 1 times [2024-11-18 17:26:18,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:18,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39542784] [2024-11-18 17:26:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:18,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:18,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:18,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:18,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39542784] [2024-11-18 17:26:18,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39542784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:18,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:18,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 17:26:18,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470854916] [2024-11-18 17:26:18,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:18,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:26:18,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:18,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:26:18,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:26:18,631 INFO L87 Difference]: Start difference. First operand 272 states and 401 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:18,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:18,710 INFO L93 Difference]: Finished difference Result 480 states and 707 transitions. [2024-11-18 17:26:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 17:26:18,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-11-18 17:26:18,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:18,713 INFO L225 Difference]: With dead ends: 480 [2024-11-18 17:26:18,713 INFO L226 Difference]: Without dead ends: 274 [2024-11-18 17:26:18,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:26:18,717 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 341 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:18,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1520 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 17:26:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-18 17:26:18,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2024-11-18 17:26:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.4761904761904763) internal successors, (403), 273 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:18,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 403 transitions. [2024-11-18 17:26:18,726 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 403 transitions. Word has length 66 [2024-11-18 17:26:18,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:18,727 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 403 transitions. [2024-11-18 17:26:18,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:18,730 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 403 transitions. [2024-11-18 17:26:18,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 17:26:18,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:18,731 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] [2024-11-18 17:26:18,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 17:26:18,731 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:18,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1438250042, now seen corresponding path program 1 times [2024-11-18 17:26:18,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:18,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777242298] [2024-11-18 17:26:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:18,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:18,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:18,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777242298] [2024-11-18 17:26:18,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777242298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:18,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:18,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:26:18,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521367570] [2024-11-18 17:26:18,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:18,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:26:18,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:26:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:26:18,998 INFO L87 Difference]: Start difference. First operand 274 states and 403 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:19,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:19,068 INFO L93 Difference]: Finished difference Result 503 states and 739 transitions. [2024-11-18 17:26:19,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 17:26:19,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-11-18 17:26:19,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:19,070 INFO L225 Difference]: With dead ends: 503 [2024-11-18 17:26:19,070 INFO L226 Difference]: Without dead ends: 295 [2024-11-18 17:26:19,071 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 [2024-11-18 17:26:19,071 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 13 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2287 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 [2024-11-18 17:26:19,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2287 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 17:26:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-18 17:26:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2024-11-18 17:26:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.465986394557823) internal successors, (431), 294 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 431 transitions. [2024-11-18 17:26:19,082 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 431 transitions. Word has length 66 [2024-11-18 17:26:19,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:19,082 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 431 transitions. [2024-11-18 17:26:19,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:19,082 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 431 transitions. [2024-11-18 17:26:19,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 17:26:19,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:19,083 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] [2024-11-18 17:26:19,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 17:26:19,084 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:19,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:19,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1668577207, now seen corresponding path program 1 times [2024-11-18 17:26:19,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:19,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593371025] [2024-11-18 17:26:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:19,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:19,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:19,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593371025] [2024-11-18 17:26:19,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593371025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:19,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:19,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 17:26:19,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3396897] [2024-11-18 17:26:19,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:19,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:26:19,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:19,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:26:19,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:26:19,431 INFO L87 Difference]: Start difference. First operand 295 states and 431 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:20,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:20,147 INFO L93 Difference]: Finished difference Result 663 states and 963 transitions. [2024-11-18 17:26:20,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 17:26:20,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-11-18 17:26:20,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:20,150 INFO L225 Difference]: With dead ends: 663 [2024-11-18 17:26:20,150 INFO L226 Difference]: Without dead ends: 434 [2024-11-18 17:26:20,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 17:26:20,151 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 691 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:20,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 1336 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 17:26:20,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-18 17:26:20,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 338. [2024-11-18 17:26:20,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.4629080118694362) internal successors, (493), 337 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 493 transitions. [2024-11-18 17:26:20,158 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 493 transitions. Word has length 67 [2024-11-18 17:26:20,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:20,158 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 493 transitions. [2024-11-18 17:26:20,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 493 transitions. [2024-11-18 17:26:20,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 17:26:20,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:20,159 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] [2024-11-18 17:26:20,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 17:26:20,159 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:20,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1051102604, now seen corresponding path program 1 times [2024-11-18 17:26:20,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:20,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771821532] [2024-11-18 17:26:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:20,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:20,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:20,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771821532] [2024-11-18 17:26:20,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771821532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:20,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:20,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 17:26:20,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506364096] [2024-11-18 17:26:20,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:20,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 17:26:20,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:20,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 17:26:20,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 17:26:20,318 INFO L87 Difference]: Start difference. First operand 338 states and 493 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:20,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:20,346 INFO L93 Difference]: Finished difference Result 608 states and 886 transitions. [2024-11-18 17:26:20,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 17:26:20,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-11-18 17:26:20,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:20,348 INFO L225 Difference]: With dead ends: 608 [2024-11-18 17:26:20,348 INFO L226 Difference]: Without dead ends: 370 [2024-11-18 17:26:20,348 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 [2024-11-18 17:26:20,349 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 12 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:20,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1541 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 17:26:20,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-18 17:26:20,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2024-11-18 17:26:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 1.4552845528455285) internal successors, (537), 369 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 537 transitions. [2024-11-18 17:26:20,356 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 537 transitions. Word has length 67 [2024-11-18 17:26:20,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:20,356 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 537 transitions. [2024-11-18 17:26:20,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:20,356 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 537 transitions. [2024-11-18 17:26:20,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 17:26:20,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:20,357 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] [2024-11-18 17:26:20,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 17:26:20,358 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:20,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:20,358 INFO L85 PathProgramCache]: Analyzing trace with hash 82510733, now seen corresponding path program 1 times [2024-11-18 17:26:20,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:20,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516221500] [2024-11-18 17:26:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:20,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:20,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:20,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516221500] [2024-11-18 17:26:20,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516221500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:20,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:20,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:26:20,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888589871] [2024-11-18 17:26:20,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:20,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:26:20,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:20,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:26:20,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:26:20,774 INFO L87 Difference]: Start difference. First operand 370 states and 537 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:20,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:20,839 INFO L93 Difference]: Finished difference Result 655 states and 950 transitions. [2024-11-18 17:26:20,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 17:26:20,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-11-18 17:26:20,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:20,841 INFO L225 Difference]: With dead ends: 655 [2024-11-18 17:26:20,841 INFO L226 Difference]: Without dead ends: 394 [2024-11-18 17:26:20,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-18 17:26:20,843 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 361 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:20,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1902 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 17:26:20,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-18 17:26:20,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2024-11-18 17:26:20,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.4478371501272265) internal successors, (569), 393 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 569 transitions. [2024-11-18 17:26:20,851 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 569 transitions. Word has length 67 [2024-11-18 17:26:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:20,852 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 569 transitions. [2024-11-18 17:26:20,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:20,852 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 569 transitions. [2024-11-18 17:26:20,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 17:26:20,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:20,853 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] [2024-11-18 17:26:20,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 17:26:20,853 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:20,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:20,854 INFO L85 PathProgramCache]: Analyzing trace with hash 755646824, now seen corresponding path program 1 times [2024-11-18 17:26:20,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:20,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470185035] [2024-11-18 17:26:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:20,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:21,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:21,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470185035] [2024-11-18 17:26:21,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470185035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:21,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:21,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 17:26:21,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479450173] [2024-11-18 17:26:21,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:21,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:26:21,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:21,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:26:21,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:26:21,047 INFO L87 Difference]: Start difference. First operand 394 states and 569 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:21,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:21,158 INFO L93 Difference]: Finished difference Result 780 states and 1121 transitions. [2024-11-18 17:26:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 17:26:21,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-11-18 17:26:21,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:21,163 INFO L225 Difference]: With dead ends: 780 [2024-11-18 17:26:21,163 INFO L226 Difference]: Without dead ends: 480 [2024-11-18 17:26:21,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 17:26:21,164 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 729 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:21,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1125 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 17:26:21,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-11-18 17:26:21,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 368. [2024-11-18 17:26:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.44141689373297) internal successors, (529), 367 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 529 transitions. [2024-11-18 17:26:21,175 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 529 transitions. Word has length 68 [2024-11-18 17:26:21,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:21,175 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 529 transitions. [2024-11-18 17:26:21,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 529 transitions. [2024-11-18 17:26:21,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 17:26:21,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:21,176 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] [2024-11-18 17:26:21,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 17:26:21,176 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:21,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:21,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1613717782, now seen corresponding path program 1 times [2024-11-18 17:26:21,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:21,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685955766] [2024-11-18 17:26:21,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:21,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:21,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:21,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:21,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685955766] [2024-11-18 17:26:21,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685955766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:21,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:21,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 17:26:21,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233325240] [2024-11-18 17:26:21,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:21,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:26:21,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:21,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:26:21,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:26:21,442 INFO L87 Difference]: Start difference. First operand 368 states and 529 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:21,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:21,486 INFO L93 Difference]: Finished difference Result 662 states and 951 transitions. [2024-11-18 17:26:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 17:26:21,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-11-18 17:26:21,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:21,488 INFO L225 Difference]: With dead ends: 662 [2024-11-18 17:26:21,489 INFO L226 Difference]: Without dead ends: 380 [2024-11-18 17:26:21,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 17:26:21,490 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 367 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:21,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1525 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 17:26:21,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-18 17:26:21,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2024-11-18 17:26:21,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.437994722955145) internal successors, (545), 379 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:21,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 545 transitions. [2024-11-18 17:26:21,497 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 545 transitions. Word has length 68 [2024-11-18 17:26:21,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:21,497 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 545 transitions. [2024-11-18 17:26:21,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:21,498 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 545 transitions. [2024-11-18 17:26:21,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 17:26:21,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:21,498 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] [2024-11-18 17:26:21,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 17:26:21,499 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:21,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:21,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1703460902, now seen corresponding path program 1 times [2024-11-18 17:26:21,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:21,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155215968] [2024-11-18 17:26:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:21,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:21,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:21,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155215968] [2024-11-18 17:26:21,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155215968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:21,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:21,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 17:26:21,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841903270] [2024-11-18 17:26:21,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:21,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:26:21,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:21,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:26:21,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:26:21,669 INFO L87 Difference]: Start difference. First operand 380 states and 545 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:21,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:21,771 INFO L93 Difference]: Finished difference Result 738 states and 1057 transitions. [2024-11-18 17:26:21,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 17:26:21,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-11-18 17:26:21,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:21,773 INFO L225 Difference]: With dead ends: 738 [2024-11-18 17:26:21,774 INFO L226 Difference]: Without dead ends: 432 [2024-11-18 17:26:21,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 17:26:21,774 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 643 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:21,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1125 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 17:26:21,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-18 17:26:21,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 353. [2024-11-18 17:26:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.4403409090909092) internal successors, (507), 352 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 507 transitions. [2024-11-18 17:26:21,780 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 507 transitions. Word has length 69 [2024-11-18 17:26:21,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:21,780 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 507 transitions. [2024-11-18 17:26:21,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:21,780 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 507 transitions. [2024-11-18 17:26:21,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-18 17:26:21,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:21,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:21,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 17:26:21,782 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:21,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:21,782 INFO L85 PathProgramCache]: Analyzing trace with hash -781799081, now seen corresponding path program 1 times [2024-11-18 17:26:21,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:21,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534245474] [2024-11-18 17:26:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:21,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:22,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:22,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534245474] [2024-11-18 17:26:22,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534245474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:22,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:22,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:26:22,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175717911] [2024-11-18 17:26:22,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:22,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:26:22,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:22,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:26:22,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:26:22,993 INFO L87 Difference]: Start difference. First operand 353 states and 507 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:23,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:23,072 INFO L93 Difference]: Finished difference Result 983 states and 1421 transitions. [2024-11-18 17:26:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 17:26:23,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2024-11-18 17:26:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:23,075 INFO L225 Difference]: With dead ends: 983 [2024-11-18 17:26:23,076 INFO L226 Difference]: Without dead ends: 720 [2024-11-18 17:26:23,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-18 17:26:23,077 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 380 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:23,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 2472 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 17:26:23,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-18 17:26:23,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 549. [2024-11-18 17:26:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.4525547445255473) internal successors, (796), 548 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:23,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 796 transitions. [2024-11-18 17:26:23,086 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 796 transitions. Word has length 166 [2024-11-18 17:26:23,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:23,087 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 796 transitions. [2024-11-18 17:26:23,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:23,087 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 796 transitions. [2024-11-18 17:26:23,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 17:26:23,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:23,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:23,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 17:26:23,089 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:23,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:23,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1819002342, now seen corresponding path program 1 times [2024-11-18 17:26:23,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:23,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169103647] [2024-11-18 17:26:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:23,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:24,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:24,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169103647] [2024-11-18 17:26:24,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169103647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:24,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:24,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:26:24,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041195364] [2024-11-18 17:26:24,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:24,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:26:24,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:24,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:26:24,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:26:24,144 INFO L87 Difference]: Start difference. First operand 549 states and 796 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:24,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:24,268 INFO L93 Difference]: Finished difference Result 1719 states and 2504 transitions. [2024-11-18 17:26:24,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 17:26:24,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-11-18 17:26:24,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:24,272 INFO L225 Difference]: With dead ends: 1719 [2024-11-18 17:26:24,272 INFO L226 Difference]: Without dead ends: 1246 [2024-11-18 17:26:24,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-18 17:26:24,274 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 418 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:24,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 2568 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 17:26:24,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2024-11-18 17:26:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 835. [2024-11-18 17:26:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 1.4628297362110312) internal successors, (1220), 834 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1220 transitions. [2024-11-18 17:26:24,318 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1220 transitions. Word has length 167 [2024-11-18 17:26:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:24,319 INFO L471 AbstractCegarLoop]: Abstraction has 835 states and 1220 transitions. [2024-11-18 17:26:24,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1220 transitions. [2024-11-18 17:26:24,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 17:26:24,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:24,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:24,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 17:26:24,321 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:24,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:24,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1683159427, now seen corresponding path program 1 times [2024-11-18 17:26:24,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:24,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922095606] [2024-11-18 17:26:24,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:24,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:25,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:25,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922095606] [2024-11-18 17:26:25,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922095606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:25,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:25,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:26:25,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858948997] [2024-11-18 17:26:25,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:25,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:26:25,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:25,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:26:25,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:26:25,465 INFO L87 Difference]: Start difference. First operand 835 states and 1220 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:26,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:26,356 INFO L93 Difference]: Finished difference Result 2342 states and 3430 transitions. [2024-11-18 17:26:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 17:26:26,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-11-18 17:26:26,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:26,362 INFO L225 Difference]: With dead ends: 2342 [2024-11-18 17:26:26,362 INFO L226 Difference]: Without dead ends: 1575 [2024-11-18 17:26:26,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 17:26:26,364 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 706 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:26,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 2120 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 17:26:26,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2024-11-18 17:26:26,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1097. [2024-11-18 17:26:26,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1096 states have (on average 1.468978102189781) internal successors, (1610), 1096 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:26,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1610 transitions. [2024-11-18 17:26:26,382 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1610 transitions. Word has length 167 [2024-11-18 17:26:26,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:26,383 INFO L471 AbstractCegarLoop]: Abstraction has 1097 states and 1610 transitions. [2024-11-18 17:26:26,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:26,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1610 transitions. [2024-11-18 17:26:26,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 17:26:26,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:26,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:26,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 17:26:26,385 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:26,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:26,386 INFO L85 PathProgramCache]: Analyzing trace with hash -801251916, now seen corresponding path program 1 times [2024-11-18 17:26:26,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:26,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535326608] [2024-11-18 17:26:26,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:26,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:27,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:27,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535326608] [2024-11-18 17:26:27,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535326608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:27,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:27,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:26:27,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104864835] [2024-11-18 17:26:27,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:27,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:26:27,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:27,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:26:27,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:26:27,633 INFO L87 Difference]: Start difference. First operand 1097 states and 1610 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:27,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:27,931 INFO L93 Difference]: Finished difference Result 2478 states and 3634 transitions. [2024-11-18 17:26:27,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 17:26:27,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2024-11-18 17:26:27,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:27,935 INFO L225 Difference]: With dead ends: 2478 [2024-11-18 17:26:27,936 INFO L226 Difference]: Without dead ends: 1449 [2024-11-18 17:26:27,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-18 17:26:27,941 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 384 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:27,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 2763 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 17:26:27,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2024-11-18 17:26:27,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1048. [2024-11-18 17:26:27,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1047 states have (on average 1.4689589302769819) internal successors, (1538), 1047 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1538 transitions. [2024-11-18 17:26:27,971 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1538 transitions. Word has length 168 [2024-11-18 17:26:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:27,972 INFO L471 AbstractCegarLoop]: Abstraction has 1048 states and 1538 transitions. [2024-11-18 17:26:27,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:27,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1538 transitions. [2024-11-18 17:26:27,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 17:26:27,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:27,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:27,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 17:26:27,977 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:27,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:27,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2137770400, now seen corresponding path program 1 times [2024-11-18 17:26:27,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:27,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578491312] [2024-11-18 17:26:27,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:27,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:29,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:29,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578491312] [2024-11-18 17:26:29,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578491312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:29,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:29,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:26:29,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082364259] [2024-11-18 17:26:29,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:29,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:26:29,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:29,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:26:29,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:26:29,079 INFO L87 Difference]: Start difference. First operand 1048 states and 1538 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:30,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:30,061 INFO L93 Difference]: Finished difference Result 3224 states and 4740 transitions. [2024-11-18 17:26:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 17:26:30,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2024-11-18 17:26:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:30,068 INFO L225 Difference]: With dead ends: 3224 [2024-11-18 17:26:30,068 INFO L226 Difference]: Without dead ends: 2242 [2024-11-18 17:26:30,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 17:26:30,070 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 730 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:30,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 2180 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 17:26:30,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2024-11-18 17:26:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 1437. [2024-11-18 17:26:30,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1436 states have (on average 1.472841225626741) internal successors, (2115), 1436 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2115 transitions. [2024-11-18 17:26:30,092 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2115 transitions. Word has length 168 [2024-11-18 17:26:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:30,093 INFO L471 AbstractCegarLoop]: Abstraction has 1437 states and 2115 transitions. [2024-11-18 17:26:30,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2115 transitions. [2024-11-18 17:26:30,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 17:26:30,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:30,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:30,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 17:26:30,096 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:30,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:30,097 INFO L85 PathProgramCache]: Analyzing trace with hash 974231898, now seen corresponding path program 1 times [2024-11-18 17:26:30,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:30,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366822388] [2024-11-18 17:26:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:30,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:31,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:31,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366822388] [2024-11-18 17:26:31,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366822388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:31,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:31,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 17:26:31,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938796687] [2024-11-18 17:26:31,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:31,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:26:31,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:31,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:26:31,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:26:31,608 INFO L87 Difference]: Start difference. First operand 1437 states and 2115 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:31,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:31,817 INFO L93 Difference]: Finished difference Result 2952 states and 4348 transitions. [2024-11-18 17:26:31,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 17:26:31,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2024-11-18 17:26:31,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:31,822 INFO L225 Difference]: With dead ends: 2952 [2024-11-18 17:26:31,822 INFO L226 Difference]: Without dead ends: 1581 [2024-11-18 17:26:31,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:26:31,824 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 349 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:31,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1237 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 17:26:31,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2024-11-18 17:26:31,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1500. [2024-11-18 17:26:31,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 1.4649766511007338) internal successors, (2196), 1499 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:31,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 2196 transitions. [2024-11-18 17:26:31,841 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 2196 transitions. Word has length 168 [2024-11-18 17:26:31,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:31,842 INFO L471 AbstractCegarLoop]: Abstraction has 1500 states and 2196 transitions. [2024-11-18 17:26:31,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:31,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 2196 transitions. [2024-11-18 17:26:31,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 17:26:31,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:31,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:31,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 17:26:31,845 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:31,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:31,845 INFO L85 PathProgramCache]: Analyzing trace with hash 209129727, now seen corresponding path program 1 times [2024-11-18 17:26:31,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:31,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902293211] [2024-11-18 17:26:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:31,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:33,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:33,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902293211] [2024-11-18 17:26:33,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902293211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:33,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:33,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 17:26:33,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502972737] [2024-11-18 17:26:33,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:33,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:26:33,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:33,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:26:33,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:26:33,828 INFO L87 Difference]: Start difference. First operand 1500 states and 2196 transitions. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:34,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:34,263 INFO L93 Difference]: Finished difference Result 4150 states and 6074 transitions. [2024-11-18 17:26:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 17:26:34,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2024-11-18 17:26:34,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:34,270 INFO L225 Difference]: With dead ends: 4150 [2024-11-18 17:26:34,271 INFO L226 Difference]: Without dead ends: 2502 [2024-11-18 17:26:34,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 17:26:34,274 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 1394 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:34,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 1319 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 17:26:34,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2024-11-18 17:26:34,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 1536. [2024-11-18 17:26:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1535 states have (on average 1.4579804560260585) internal successors, (2238), 1535 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2238 transitions. [2024-11-18 17:26:34,299 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2238 transitions. Word has length 169 [2024-11-18 17:26:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:34,299 INFO L471 AbstractCegarLoop]: Abstraction has 1536 states and 2238 transitions. [2024-11-18 17:26:34,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:34,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2238 transitions. [2024-11-18 17:26:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 17:26:34,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:34,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:34,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 17:26:34,302 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:34,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:34,302 INFO L85 PathProgramCache]: Analyzing trace with hash 526670298, now seen corresponding path program 1 times [2024-11-18 17:26:34,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:34,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554053475] [2024-11-18 17:26:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:34,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:35,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:35,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554053475] [2024-11-18 17:26:35,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554053475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:35,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:35,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 17:26:35,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775091665] [2024-11-18 17:26:35,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:35,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 17:26:35,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:35,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 17:26:35,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 17:26:35,531 INFO L87 Difference]: Start difference. First operand 1536 states and 2238 transitions. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:35,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:35,985 INFO L93 Difference]: Finished difference Result 3386 states and 4931 transitions. [2024-11-18 17:26:35,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 17:26:35,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2024-11-18 17:26:35,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:35,991 INFO L225 Difference]: With dead ends: 3386 [2024-11-18 17:26:35,991 INFO L226 Difference]: Without dead ends: 1952 [2024-11-18 17:26:35,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-18 17:26:35,993 INFO L432 NwaCegarLoop]: 352 mSDtfsCounter, 622 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:35,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1429 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 17:26:35,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2024-11-18 17:26:36,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1719. [2024-11-18 17:26:36,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.4545983701979046) internal successors, (2499), 1718 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2499 transitions. [2024-11-18 17:26:36,019 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2499 transitions. Word has length 170 [2024-11-18 17:26:36,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:36,019 INFO L471 AbstractCegarLoop]: Abstraction has 1719 states and 2499 transitions. [2024-11-18 17:26:36,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2499 transitions. [2024-11-18 17:26:36,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 17:26:36,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:36,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:36,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 17:26:36,022 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:36,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:36,022 INFO L85 PathProgramCache]: Analyzing trace with hash 233769420, now seen corresponding path program 1 times [2024-11-18 17:26:36,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:36,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918282683] [2024-11-18 17:26:36,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:36,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:37,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:37,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918282683] [2024-11-18 17:26:37,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918282683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:37,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:37,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 17:26:37,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972905259] [2024-11-18 17:26:37,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:37,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:26:37,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:37,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:26:37,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:26:37,418 INFO L87 Difference]: Start difference. First operand 1719 states and 2499 transitions. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:37,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:37,858 INFO L93 Difference]: Finished difference Result 4253 states and 6200 transitions. [2024-11-18 17:26:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 17:26:37,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2024-11-18 17:26:37,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:37,866 INFO L225 Difference]: With dead ends: 4253 [2024-11-18 17:26:37,866 INFO L226 Difference]: Without dead ends: 2654 [2024-11-18 17:26:37,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 17:26:37,869 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 794 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:37,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1131 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 17:26:37,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2024-11-18 17:26:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 1719. [2024-11-18 17:26:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.4528521536670547) internal successors, (2496), 1718 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2496 transitions. [2024-11-18 17:26:37,895 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2496 transitions. Word has length 170 [2024-11-18 17:26:37,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:37,895 INFO L471 AbstractCegarLoop]: Abstraction has 1719 states and 2496 transitions. [2024-11-18 17:26:37,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:37,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2496 transitions. [2024-11-18 17:26:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-18 17:26:37,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:37,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:37,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 17:26:37,898 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:37,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:37,899 INFO L85 PathProgramCache]: Analyzing trace with hash 138100649, now seen corresponding path program 1 times [2024-11-18 17:26:37,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:37,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599040849] [2024-11-18 17:26:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:37,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:39,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:39,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599040849] [2024-11-18 17:26:39,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599040849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:39,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:39,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 17:26:39,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888835859] [2024-11-18 17:26:39,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:39,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:26:39,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:39,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:26:39,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:26:39,135 INFO L87 Difference]: Start difference. First operand 1719 states and 2496 transitions. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:39,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:39,572 INFO L93 Difference]: Finished difference Result 4313 states and 6287 transitions. [2024-11-18 17:26:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 17:26:39,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2024-11-18 17:26:39,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:39,579 INFO L225 Difference]: With dead ends: 4313 [2024-11-18 17:26:39,580 INFO L226 Difference]: Without dead ends: 2762 [2024-11-18 17:26:39,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 17:26:39,583 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 823 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:39,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1127 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 17:26:39,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2024-11-18 17:26:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 1719. [2024-11-18 17:26:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.4476135040745053) internal successors, (2487), 1718 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:39,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2487 transitions. [2024-11-18 17:26:39,612 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2487 transitions. Word has length 171 [2024-11-18 17:26:39,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:39,612 INFO L471 AbstractCegarLoop]: Abstraction has 1719 states and 2487 transitions. [2024-11-18 17:26:39,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:39,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2487 transitions. [2024-11-18 17:26:39,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-18 17:26:39,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:39,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:39,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 17:26:39,616 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:39,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:39,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1253868514, now seen corresponding path program 1 times [2024-11-18 17:26:39,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:39,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789026857] [2024-11-18 17:26:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:39,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:42,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:42,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789026857] [2024-11-18 17:26:42,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789026857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:42,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:42,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 17:26:42,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011759218] [2024-11-18 17:26:42,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:42,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 17:26:42,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:42,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 17:26:42,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 17:26:42,139 INFO L87 Difference]: Start difference. First operand 1719 states and 2487 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:42,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:42,598 INFO L93 Difference]: Finished difference Result 4135 states and 6010 transitions. [2024-11-18 17:26:42,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 17:26:42,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2024-11-18 17:26:42,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:42,605 INFO L225 Difference]: With dead ends: 4135 [2024-11-18 17:26:42,605 INFO L226 Difference]: Without dead ends: 2520 [2024-11-18 17:26:42,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:26:42,608 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 738 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:42,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 635 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 17:26:42,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2024-11-18 17:26:42,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 1719. [2024-11-18 17:26:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.4470314318975552) internal successors, (2486), 1718 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2486 transitions. [2024-11-18 17:26:42,639 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2486 transitions. Word has length 172 [2024-11-18 17:26:42,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:42,639 INFO L471 AbstractCegarLoop]: Abstraction has 1719 states and 2486 transitions. [2024-11-18 17:26:42,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:42,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2486 transitions. [2024-11-18 17:26:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 17:26:42,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:42,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:42,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 17:26:42,643 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:42,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:42,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1880451712, now seen corresponding path program 1 times [2024-11-18 17:26:42,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:42,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507451511] [2024-11-18 17:26:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:42,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:44,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:44,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507451511] [2024-11-18 17:26:44,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507451511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:44,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:44,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 17:26:44,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541852820] [2024-11-18 17:26:44,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:44,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 17:26:44,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:44,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 17:26:44,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 17:26:44,942 INFO L87 Difference]: Start difference. First operand 1719 states and 2486 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:45,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:45,377 INFO L93 Difference]: Finished difference Result 4227 states and 6150 transitions. [2024-11-18 17:26:45,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 17:26:45,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2024-11-18 17:26:45,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:45,385 INFO L225 Difference]: With dead ends: 4227 [2024-11-18 17:26:45,386 INFO L226 Difference]: Without dead ends: 2628 [2024-11-18 17:26:45,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:26:45,389 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 764 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:45,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 636 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 17:26:45,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2024-11-18 17:26:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 1719. [2024-11-18 17:26:45,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.4452852153667055) internal successors, (2483), 1718 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:45,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2483 transitions. [2024-11-18 17:26:45,467 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2483 transitions. Word has length 173 [2024-11-18 17:26:45,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:45,467 INFO L471 AbstractCegarLoop]: Abstraction has 1719 states and 2483 transitions. [2024-11-18 17:26:45,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:45,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2483 transitions. [2024-11-18 17:26:45,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 17:26:45,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:45,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:45,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 17:26:45,470 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:45,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:45,471 INFO L85 PathProgramCache]: Analyzing trace with hash -759716836, now seen corresponding path program 1 times [2024-11-18 17:26:45,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:45,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960955552] [2024-11-18 17:26:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:45,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:47,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:47,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960955552] [2024-11-18 17:26:47,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960955552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:47,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:47,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 17:26:47,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287052899] [2024-11-18 17:26:47,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:47,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 17:26:47,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:47,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 17:26:47,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 17:26:47,568 INFO L87 Difference]: Start difference. First operand 1719 states and 2483 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:48,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:48,011 INFO L93 Difference]: Finished difference Result 4287 states and 6246 transitions. [2024-11-18 17:26:48,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 17:26:48,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2024-11-18 17:26:48,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:48,019 INFO L225 Difference]: With dead ends: 4287 [2024-11-18 17:26:48,019 INFO L226 Difference]: Without dead ends: 2736 [2024-11-18 17:26:48,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:26:48,022 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 792 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:48,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 636 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 17:26:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2024-11-18 17:26:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 1719. [2024-11-18 17:26:48,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.440046565774156) internal successors, (2474), 1718 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2474 transitions. [2024-11-18 17:26:48,070 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2474 transitions. Word has length 174 [2024-11-18 17:26:48,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:48,070 INFO L471 AbstractCegarLoop]: Abstraction has 1719 states and 2474 transitions. [2024-11-18 17:26:48,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2474 transitions. [2024-11-18 17:26:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 17:26:48,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:48,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:48,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 17:26:48,073 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:48,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:48,073 INFO L85 PathProgramCache]: Analyzing trace with hash -606536280, now seen corresponding path program 1 times [2024-11-18 17:26:48,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:48,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360052569] [2024-11-18 17:26:48,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:48,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:51,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:51,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360052569] [2024-11-18 17:26:51,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360052569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:51,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:51,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 17:26:51,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877670047] [2024-11-18 17:26:51,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:51,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:26:51,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:51,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:26:51,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:26:51,707 INFO L87 Difference]: Start difference. First operand 1719 states and 2474 transitions. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:51,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:51,929 INFO L93 Difference]: Finished difference Result 3288 states and 4767 transitions. [2024-11-18 17:26:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 17:26:51,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2024-11-18 17:26:51,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:51,935 INFO L225 Difference]: With dead ends: 3288 [2024-11-18 17:26:51,935 INFO L226 Difference]: Without dead ends: 1734 [2024-11-18 17:26:51,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-18 17:26:51,937 INFO L432 NwaCegarLoop]: 363 mSDtfsCounter, 593 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:51,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1444 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 17:26:51,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2024-11-18 17:26:51,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1599. [2024-11-18 17:26:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 1.4505632040050063) internal successors, (2318), 1598 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2318 transitions. [2024-11-18 17:26:51,956 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2318 transitions. Word has length 175 [2024-11-18 17:26:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:51,957 INFO L471 AbstractCegarLoop]: Abstraction has 1599 states and 2318 transitions. [2024-11-18 17:26:51,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2318 transitions. [2024-11-18 17:26:51,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 17:26:51,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:51,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:26:51,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 17:26:51,959 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:51,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:51,959 INFO L85 PathProgramCache]: Analyzing trace with hash -539390477, now seen corresponding path program 1 times [2024-11-18 17:26:51,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:51,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487739201] [2024-11-18 17:26:51,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:51,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:26:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:26:55,795 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:26:55,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:26:55,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487739201] [2024-11-18 17:26:55,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487739201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:26:55,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:26:55,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 17:26:55,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740376162] [2024-11-18 17:26:55,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:26:55,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:26:55,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:26:55,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:26:55,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:26:55,798 INFO L87 Difference]: Start difference. First operand 1599 states and 2318 transitions. Second operand has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:56,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:26:56,301 INFO L93 Difference]: Finished difference Result 3094 states and 4505 transitions. [2024-11-18 17:26:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 17:26:56,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2024-11-18 17:26:56,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:26:56,304 INFO L225 Difference]: With dead ends: 3094 [2024-11-18 17:26:56,304 INFO L226 Difference]: Without dead ends: 1624 [2024-11-18 17:26:56,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-18 17:26:56,306 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 627 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 17:26:56,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 791 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 17:26:56,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2024-11-18 17:26:56,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1563. [2024-11-18 17:26:56,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 1.4532650448143405) internal successors, (2270), 1562 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2270 transitions. [2024-11-18 17:26:56,322 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2270 transitions. Word has length 176 [2024-11-18 17:26:56,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:26:56,322 INFO L471 AbstractCegarLoop]: Abstraction has 1563 states and 2270 transitions. [2024-11-18 17:26:56,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:26:56,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2270 transitions. [2024-11-18 17:26:56,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-11-18 17:26:56,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:26:56,325 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 17:26:56,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 17:26:56,325 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:26:56,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:26:56,325 INFO L85 PathProgramCache]: Analyzing trace with hash -772170175, now seen corresponding path program 1 times [2024-11-18 17:26:56,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:26:56,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930522430] [2024-11-18 17:26:56,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:26:56,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:27:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:27:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:27:02,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:27:02,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930522430] [2024-11-18 17:27:02,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930522430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:27:02,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:27:02,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:27:02,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778815706] [2024-11-18 17:27:02,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:27:02,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:27:02,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:27:02,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:27:02,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:27:02,926 INFO L87 Difference]: Start difference. First operand 1563 states and 2270 transitions. Second operand has 7 states, 7 states have (on average 39.285714285714285) internal successors, (275), 7 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:27:03,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:27:03,579 INFO L93 Difference]: Finished difference Result 5385 states and 7888 transitions. [2024-11-18 17:27:03,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 17:27:03,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 39.285714285714285) internal successors, (275), 7 states have internal predecessors, (275), 0 states have call successors, (0), 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 275 [2024-11-18 17:27:03,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:27:03,584 INFO L225 Difference]: With dead ends: 5385 [2024-11-18 17:27:03,584 INFO L226 Difference]: Without dead ends: 3951 [2024-11-18 17:27:03,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 17:27:03,586 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 734 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 17:27:03,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1542 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 17:27:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2024-11-18 17:27:03,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 2506. [2024-11-18 17:27:03,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2505 states have (on average 1.4554890219560879) internal successors, (3646), 2505 states have internal predecessors, (3646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:27:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3646 transitions. [2024-11-18 17:27:03,616 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3646 transitions. Word has length 275 [2024-11-18 17:27:03,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:27:03,616 INFO L471 AbstractCegarLoop]: Abstraction has 2506 states and 3646 transitions. [2024-11-18 17:27:03,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.285714285714285) internal successors, (275), 7 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:27:03,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3646 transitions. [2024-11-18 17:27:03,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-18 17:27:03,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:27:03,620 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 17:27:03,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 17:27:03,620 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:27:03,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:27:03,620 INFO L85 PathProgramCache]: Analyzing trace with hash 171144408, now seen corresponding path program 1 times [2024-11-18 17:27:03,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:27:03,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710836217] [2024-11-18 17:27:03,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:27:03,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:27:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:27:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:27:10,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:27:10,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710836217] [2024-11-18 17:27:10,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710836217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:27:10,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:27:10,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:27:10,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588764740] [2024-11-18 17:27:10,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:27:10,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:27:10,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:27:10,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:27:10,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:27:10,821 INFO L87 Difference]: Start difference. First operand 2506 states and 3646 transitions. Second operand has 7 states, 7 states have (on average 39.42857142857143) internal successors, (276), 7 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:27:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:27:11,464 INFO L93 Difference]: Finished difference Result 9024 states and 13222 transitions. [2024-11-18 17:27:11,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 17:27:11,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 39.42857142857143) internal successors, (276), 7 states have internal predecessors, (276), 0 states have call successors, (0), 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 276 [2024-11-18 17:27:11,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:27:11,473 INFO L225 Difference]: With dead ends: 9024 [2024-11-18 17:27:11,473 INFO L226 Difference]: Without dead ends: 6647 [2024-11-18 17:27:11,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 17:27:11,477 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 715 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 17:27:11,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1595 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 17:27:11,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6647 states. [2024-11-18 17:27:11,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6647 to 4116. [2024-11-18 17:27:11,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4116 states, 4115 states have (on average 1.4537059538274606) internal successors, (5982), 4115 states have internal predecessors, (5982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:27:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4116 states to 4116 states and 5982 transitions. [2024-11-18 17:27:11,533 INFO L78 Accepts]: Start accepts. Automaton has 4116 states and 5982 transitions. Word has length 276 [2024-11-18 17:27:11,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:27:11,533 INFO L471 AbstractCegarLoop]: Abstraction has 4116 states and 5982 transitions. [2024-11-18 17:27:11,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.42857142857143) internal successors, (276), 7 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:27:11,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4116 states and 5982 transitions. [2024-11-18 17:27:11,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-18 17:27:11,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:27:11,539 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 17:27:11,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 17:27:11,540 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:27:11,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:27:11,540 INFO L85 PathProgramCache]: Analyzing trace with hash -2000366471, now seen corresponding path program 1 times [2024-11-18 17:27:11,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:27:11,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048363530] [2024-11-18 17:27:11,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:27:11,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:27:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:27:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:27:20,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:27:20,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048363530] [2024-11-18 17:27:20,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048363530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:27:20,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:27:20,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:27:20,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716424511] [2024-11-18 17:27:20,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:27:20,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:27:20,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:27:20,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:27:20,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:27:20,189 INFO L87 Difference]: Start difference. First operand 4116 states and 5982 transitions. Second operand has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:27:20,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:27:20,794 INFO L93 Difference]: Finished difference Result 15330 states and 22426 transitions. [2024-11-18 17:27:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 17:27:20,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 0 states have call successors, (0), 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 277 [2024-11-18 17:27:20,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:27:20,808 INFO L225 Difference]: With dead ends: 15330 [2024-11-18 17:27:20,808 INFO L226 Difference]: Without dead ends: 11343 [2024-11-18 17:27:20,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 17:27:20,815 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 797 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 17:27:20,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 1643 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 17:27:20,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11343 states. [2024-11-18 17:27:20,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11343 to 6796. [2024-11-18 17:27:20,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6796 states, 6795 states have (on average 1.4478292862398823) internal successors, (9838), 6795 states have internal predecessors, (9838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:27:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6796 states to 6796 states and 9838 transitions. [2024-11-18 17:27:20,906 INFO L78 Accepts]: Start accepts. Automaton has 6796 states and 9838 transitions. Word has length 277 [2024-11-18 17:27:20,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:27:20,907 INFO L471 AbstractCegarLoop]: Abstraction has 6796 states and 9838 transitions. [2024-11-18 17:27:20,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:27:20,907 INFO L276 IsEmpty]: Start isEmpty. Operand 6796 states and 9838 transitions. [2024-11-18 17:27:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-18 17:27:20,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:27:20,915 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 17:27:20,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-18 17:27:20,915 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:27:20,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:27:20,916 INFO L85 PathProgramCache]: Analyzing trace with hash 976035754, now seen corresponding path program 1 times [2024-11-18 17:27:20,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:27:20,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954621497] [2024-11-18 17:27:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:27:20,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:27:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:27:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:27:30,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:27:30,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954621497] [2024-11-18 17:27:30,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954621497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:27:30,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:27:30,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:27:30,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257568084] [2024-11-18 17:27:30,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:27:30,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:27:30,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:27:30,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:27:30,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:27:30,128 INFO L87 Difference]: Start difference. First operand 6796 states and 9838 transitions. Second operand has 7 states, 7 states have (on average 39.714285714285715) internal successors, (278), 7 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:27:30,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:27:30,764 INFO L93 Difference]: Finished difference Result 16402 states and 23846 transitions. [2024-11-18 17:27:30,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 17:27:30,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 39.714285714285715) internal successors, (278), 7 states have internal predecessors, (278), 0 states have call successors, (0), 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 278 [2024-11-18 17:27:30,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:27:30,774 INFO L225 Difference]: With dead ends: 16402 [2024-11-18 17:27:30,774 INFO L226 Difference]: Without dead ends: 9735 [2024-11-18 17:27:30,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 17:27:30,783 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 713 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 17:27:30,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1543 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 17:27:30,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9735 states. [2024-11-18 17:27:30,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9735 to 6800. [2024-11-18 17:27:30,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6800 states, 6799 states have (on average 1.447565818502721) internal successors, (9842), 6799 states have internal predecessors, (9842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:27:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 9842 transitions. [2024-11-18 17:27:30,866 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 9842 transitions. Word has length 278 [2024-11-18 17:27:30,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:27:30,866 INFO L471 AbstractCegarLoop]: Abstraction has 6800 states and 9842 transitions. [2024-11-18 17:27:30,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.714285714285715) internal successors, (278), 7 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:27:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 9842 transitions. [2024-11-18 17:27:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-18 17:27:30,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:27:30,874 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 17:27:30,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-18 17:27:30,874 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:27:30,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:27:30,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2084833106, now seen corresponding path program 1 times [2024-11-18 17:27:30,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:27:30,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437219406] [2024-11-18 17:27:30,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:27:30,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms