./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TreeArb.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TreeArb.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 889216697607a3ef71c51d8e84a75d701eba6a2c1ee6a0bec339c47f3476a23a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 06:12:12,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 06:12:12,185 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-11 06:12:12,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 06:12:12,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 06:12:12,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 06:12:12,217 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 06:12:12,217 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 06:12:12,220 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 06:12:12,220 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 06:12:12,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 06:12:12,221 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 06:12:12,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 06:12:12,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 06:12:12,223 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 06:12:12,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 06:12:12,224 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 06:12:12,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 06:12:12,225 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 06:12:12,227 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 06:12:12,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 06:12:12,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 06:12:12,232 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 06:12:12,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 06:12:12,233 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 06:12:12,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 06:12:12,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 06:12:12,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 06:12:12,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 06:12:12,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 06:12:12,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 06:12:12,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 06:12:12,234 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 06:12:12,234 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 06:12:12,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 06:12:12,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 06:12:12,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 06:12:12,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 06:12:12,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 06:12:12,236 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 889216697607a3ef71c51d8e84a75d701eba6a2c1ee6a0bec339c47f3476a23a [2024-10-11 06:12:12,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 06:12:12,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 06:12:12,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 06:12:12,554 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 06:12:12,555 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 06:12:12,556 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TreeArb.c [2024-10-11 06:12:14,188 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 06:12:14,548 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 06:12:14,549 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TreeArb.c [2024-10-11 06:12:14,588 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/295c0abc0/a09c71cf15cb422497039d70b091bbdc/FLAG7d14adaa7 [2024-10-11 06:12:14,784 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/295c0abc0/a09c71cf15cb422497039d70b091bbdc [2024-10-11 06:12:14,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 06:12:14,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 06:12:14,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 06:12:14,794 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 06:12:14,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 06:12:14,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:12:14" (1/1) ... [2024-10-11 06:12:14,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f4bc1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:14, skipping insertion in model container [2024-10-11 06:12:14,802 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:12:14" (1/1) ... [2024-10-11 06:12:14,902 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 06:12:15,166 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TreeArb.c[1249,1262] [2024-10-11 06:12:15,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 06:12:15,597 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 06:12:15,607 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TreeArb.c[1249,1262] [2024-10-11 06:12:15,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 06:12:15,968 INFO L204 MainTranslator]: Completed translation [2024-10-11 06:12:15,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:15 WrapperNode [2024-10-11 06:12:15,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 06:12:15,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 06:12:15,971 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 06:12:15,971 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 06:12:15,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:15" (1/1) ... [2024-10-11 06:12:16,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:15" (1/1) ... [2024-10-11 06:12:16,593 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3994 [2024-10-11 06:12:16,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 06:12:16,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 06:12:16,595 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 06:12:16,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 06:12:16,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:15" (1/1) ... [2024-10-11 06:12:16,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:15" (1/1) ... [2024-10-11 06:12:16,707 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:15" (1/1) ... [2024-10-11 06:12:16,940 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 06:12:16,941 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:15" (1/1) ... [2024-10-11 06:12:16,941 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:15" (1/1) ... [2024-10-11 06:12:17,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:15" (1/1) ... [2024-10-11 06:12:17,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:15" (1/1) ... [2024-10-11 06:12:17,126 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:15" (1/1) ... [2024-10-11 06:12:17,152 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:15" (1/1) ... [2024-10-11 06:12:17,228 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 06:12:17,230 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 06:12:17,230 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 06:12:17,230 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 06:12:17,231 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:15" (1/1) ... [2024-10-11 06:12:17,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 06:12:17,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:12:17,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 06:12:17,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 06:12:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 06:12:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 06:12:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 06:12:17,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 06:12:17,847 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 06:12:17,852 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 06:12:21,308 INFO L? ?]: Removed 2723 outVars from TransFormulas that were not future-live. [2024-10-11 06:12:21,309 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 06:12:21,456 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 06:12:21,456 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 06:12:21,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:12:21 BoogieIcfgContainer [2024-10-11 06:12:21,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 06:12:21,462 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 06:12:21,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 06:12:21,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 06:12:21,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:12:14" (1/3) ... [2024-10-11 06:12:21,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e51f17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:12:21, skipping insertion in model container [2024-10-11 06:12:21,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:15" (2/3) ... [2024-10-11 06:12:21,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e51f17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:12:21, skipping insertion in model container [2024-10-11 06:12:21,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:12:21" (3/3) ... [2024-10-11 06:12:21,469 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_TreeArb.c [2024-10-11 06:12:21,489 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 06:12:21,490 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 06:12:21,641 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 06:12:21,650 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;@68268f26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 06:12:21,650 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 06:12:21,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 723 states, 721 states have (on average 1.5006934812760055) internal successors, (1082), 722 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:21,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-11 06:12:21,671 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:21,672 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:21,672 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:21,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:21,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1088420479, now seen corresponding path program 1 times [2024-10-11 06:12:21,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:21,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652212513] [2024-10-11 06:12:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:21,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:23,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:23,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652212513] [2024-10-11 06:12:23,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652212513] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:23,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:23,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:12:23,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868139738] [2024-10-11 06:12:23,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:23,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 06:12:23,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:23,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 06:12:23,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:12:23,241 INFO L87 Difference]: Start difference. First operand has 723 states, 721 states have (on average 1.5006934812760055) internal successors, (1082), 722 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:23,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:23,391 INFO L93 Difference]: Finished difference Result 1386 states and 2076 transitions. [2024-10-11 06:12:23,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 06:12:23,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-11 06:12:23,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:23,427 INFO L225 Difference]: With dead ends: 1386 [2024-10-11 06:12:23,428 INFO L226 Difference]: Without dead ends: 724 [2024-10-11 06:12:23,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:12:23,439 INFO L432 NwaCegarLoop]: 1077 mSDtfsCounter, 0 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:23,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3226 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:23,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-10-11 06:12:23,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2024-10-11 06:12:23,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 1.4965421853388658) internal successors, (1082), 723 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1082 transitions. [2024-10-11 06:12:23,549 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1082 transitions. Word has length 84 [2024-10-11 06:12:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:23,550 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 1082 transitions. [2024-10-11 06:12:23,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1082 transitions. [2024-10-11 06:12:23,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-11 06:12:23,557 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:23,558 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:23,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 06:12:23,558 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:23,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:23,559 INFO L85 PathProgramCache]: Analyzing trace with hash 620399192, now seen corresponding path program 1 times [2024-10-11 06:12:23,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:23,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099190451] [2024-10-11 06:12:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:23,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:24,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:24,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099190451] [2024-10-11 06:12:24,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099190451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:24,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:24,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:12:24,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511086362] [2024-10-11 06:12:24,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:24,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 06:12:24,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:24,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 06:12:24,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:12:24,114 INFO L87 Difference]: Start difference. First operand 724 states and 1082 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:24,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:24,178 INFO L93 Difference]: Finished difference Result 1389 states and 2076 transitions. [2024-10-11 06:12:24,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 06:12:24,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-10-11 06:12:24,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:24,185 INFO L225 Difference]: With dead ends: 1389 [2024-10-11 06:12:24,185 INFO L226 Difference]: Without dead ends: 726 [2024-10-11 06:12:24,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:12:24,191 INFO L432 NwaCegarLoop]: 1077 mSDtfsCounter, 0 mSDsluCounter, 2146 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:24,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3223 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:24,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-10-11 06:12:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2024-10-11 06:12:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 1.4951724137931035) internal successors, (1084), 725 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1084 transitions. [2024-10-11 06:12:24,228 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1084 transitions. Word has length 85 [2024-10-11 06:12:24,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:24,230 INFO L471 AbstractCegarLoop]: Abstraction has 726 states and 1084 transitions. [2024-10-11 06:12:24,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:24,231 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1084 transitions. [2024-10-11 06:12:24,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-11 06:12:24,234 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:24,235 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:24,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 06:12:24,236 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:24,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash 954540346, now seen corresponding path program 1 times [2024-10-11 06:12:24,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:24,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675555012] [2024-10-11 06:12:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:24,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:25,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:25,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675555012] [2024-10-11 06:12:25,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675555012] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:25,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:25,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:12:25,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427788244] [2024-10-11 06:12:25,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:25,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:25,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:25,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:25,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:25,634 INFO L87 Difference]: Start difference. First operand 726 states and 1084 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:25,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:25,775 INFO L93 Difference]: Finished difference Result 1398 states and 2088 transitions. [2024-10-11 06:12:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:25,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-10-11 06:12:25,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:25,781 INFO L225 Difference]: With dead ends: 1398 [2024-10-11 06:12:25,781 INFO L226 Difference]: Without dead ends: 733 [2024-10-11 06:12:25,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:12:25,784 INFO L432 NwaCegarLoop]: 1070 mSDtfsCounter, 1015 mSDsluCounter, 4271 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 5341 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:25,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 5341 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:12:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-10-11 06:12:25,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 732. [2024-10-11 06:12:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.493844049247606) internal successors, (1092), 731 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:25,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1092 transitions. [2024-10-11 06:12:25,803 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1092 transitions. Word has length 86 [2024-10-11 06:12:25,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:25,803 INFO L471 AbstractCegarLoop]: Abstraction has 732 states and 1092 transitions. [2024-10-11 06:12:25,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:25,804 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1092 transitions. [2024-10-11 06:12:25,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-11 06:12:25,805 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:25,805 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:25,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 06:12:25,806 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:25,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:25,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1090525275, now seen corresponding path program 1 times [2024-10-11 06:12:25,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:25,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127777500] [2024-10-11 06:12:25,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:25,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:26,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:26,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127777500] [2024-10-11 06:12:26,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127777500] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:26,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:26,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:12:26,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480999194] [2024-10-11 06:12:26,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:26,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:12:26,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:26,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:12:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:12:26,768 INFO L87 Difference]: Start difference. First operand 732 states and 1092 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:26,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:26,858 INFO L93 Difference]: Finished difference Result 1402 states and 2092 transitions. [2024-10-11 06:12:26,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:12:26,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-10-11 06:12:26,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:26,863 INFO L225 Difference]: With dead ends: 1402 [2024-10-11 06:12:26,863 INFO L226 Difference]: Without dead ends: 731 [2024-10-11 06:12:26,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:12:26,865 INFO L432 NwaCegarLoop]: 1073 mSDtfsCounter, 1 mSDsluCounter, 4280 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5353 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:26,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5353 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:12:26,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2024-10-11 06:12:26,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 731. [2024-10-11 06:12:26,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 1.4931506849315068) internal successors, (1090), 730 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:26,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1090 transitions. [2024-10-11 06:12:26,886 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1090 transitions. Word has length 87 [2024-10-11 06:12:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:26,887 INFO L471 AbstractCegarLoop]: Abstraction has 731 states and 1090 transitions. [2024-10-11 06:12:26,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1090 transitions. [2024-10-11 06:12:26,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-11 06:12:26,888 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:26,888 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:26,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 06:12:26,889 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:26,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:26,889 INFO L85 PathProgramCache]: Analyzing trace with hash 434866975, now seen corresponding path program 1 times [2024-10-11 06:12:26,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:26,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7110856] [2024-10-11 06:12:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:26,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:27,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:27,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7110856] [2024-10-11 06:12:27,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7110856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:27,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:27,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:12:27,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071762510] [2024-10-11 06:12:27,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:27,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:27,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:27,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:27,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:27,441 INFO L87 Difference]: Start difference. First operand 731 states and 1090 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:27,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:27,564 INFO L93 Difference]: Finished difference Result 1436 states and 2142 transitions. [2024-10-11 06:12:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:27,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-10-11 06:12:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:27,569 INFO L225 Difference]: With dead ends: 1436 [2024-10-11 06:12:27,569 INFO L226 Difference]: Without dead ends: 766 [2024-10-11 06:12:27,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:27,572 INFO L432 NwaCegarLoop]: 1072 mSDtfsCounter, 29 mSDsluCounter, 5348 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 6420 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:27,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 6420 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:12:27,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2024-10-11 06:12:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2024-10-11 06:12:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 1.4901960784313726) internal successors, (1140), 765 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1140 transitions. [2024-10-11 06:12:27,595 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1140 transitions. Word has length 87 [2024-10-11 06:12:27,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:27,596 INFO L471 AbstractCegarLoop]: Abstraction has 766 states and 1140 transitions. [2024-10-11 06:12:27,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:27,597 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1140 transitions. [2024-10-11 06:12:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-11 06:12:27,599 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:27,599 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:27,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 06:12:27,600 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:27,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:27,601 INFO L85 PathProgramCache]: Analyzing trace with hash 580037094, now seen corresponding path program 1 times [2024-10-11 06:12:27,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:27,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82763692] [2024-10-11 06:12:27,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:27,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:28,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:28,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82763692] [2024-10-11 06:12:28,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82763692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:28,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:28,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:12:28,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626159307] [2024-10-11 06:12:28,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:28,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 06:12:28,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:28,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 06:12:28,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:12:28,667 INFO L87 Difference]: Start difference. First operand 766 states and 1140 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:29,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:29,309 INFO L93 Difference]: Finished difference Result 2094 states and 3116 transitions. [2024-10-11 06:12:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 06:12:29,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-10-11 06:12:29,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:29,316 INFO L225 Difference]: With dead ends: 2094 [2024-10-11 06:12:29,316 INFO L226 Difference]: Without dead ends: 1389 [2024-10-11 06:12:29,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-11 06:12:29,320 INFO L432 NwaCegarLoop]: 1023 mSDtfsCounter, 2718 mSDsluCounter, 5109 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 6132 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:29,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2718 Valid, 6132 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 06:12:29,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2024-10-11 06:12:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 879. [2024-10-11 06:12:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 1.4874715261958997) internal successors, (1306), 878 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:29,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1306 transitions. [2024-10-11 06:12:29,351 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1306 transitions. Word has length 87 [2024-10-11 06:12:29,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:29,351 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1306 transitions. [2024-10-11 06:12:29,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:29,352 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1306 transitions. [2024-10-11 06:12:29,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-11 06:12:29,353 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:29,354 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:29,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 06:12:29,354 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:29,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:29,355 INFO L85 PathProgramCache]: Analyzing trace with hash -812423010, now seen corresponding path program 1 times [2024-10-11 06:12:29,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:29,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556061991] [2024-10-11 06:12:29,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:29,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:30,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:30,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556061991] [2024-10-11 06:12:30,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556061991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:30,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:30,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:12:30,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473491804] [2024-10-11 06:12:30,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:30,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:30,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:30,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:30,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:30,407 INFO L87 Difference]: Start difference. First operand 879 states and 1306 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:30,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:30,924 INFO L93 Difference]: Finished difference Result 2080 states and 3088 transitions. [2024-10-11 06:12:30,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:30,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-10-11 06:12:30,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:30,930 INFO L225 Difference]: With dead ends: 2080 [2024-10-11 06:12:30,931 INFO L226 Difference]: Without dead ends: 1339 [2024-10-11 06:12:30,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:12:30,934 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 2512 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:30,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2512 Valid, 5115 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 06:12:30,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2024-10-11 06:12:30,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 881. [2024-10-11 06:12:30,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 1.4840909090909091) internal successors, (1306), 880 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1306 transitions. [2024-10-11 06:12:30,963 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1306 transitions. Word has length 88 [2024-10-11 06:12:30,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:30,963 INFO L471 AbstractCegarLoop]: Abstraction has 881 states and 1306 transitions. [2024-10-11 06:12:30,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1306 transitions. [2024-10-11 06:12:30,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-11 06:12:30,964 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:30,965 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:30,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 06:12:30,965 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:30,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:30,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1594101854, now seen corresponding path program 1 times [2024-10-11 06:12:30,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:30,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595756295] [2024-10-11 06:12:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:30,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:31,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:31,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595756295] [2024-10-11 06:12:31,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595756295] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:31,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:31,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:12:31,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084081224] [2024-10-11 06:12:31,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:31,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:12:31,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:31,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:12:31,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:12:31,256 INFO L87 Difference]: Start difference. First operand 881 states and 1306 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:31,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:31,312 INFO L93 Difference]: Finished difference Result 1679 states and 2491 transitions. [2024-10-11 06:12:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:12:31,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-10-11 06:12:31,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:31,316 INFO L225 Difference]: With dead ends: 1679 [2024-10-11 06:12:31,316 INFO L226 Difference]: Without dead ends: 945 [2024-10-11 06:12:31,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:12:31,319 INFO L432 NwaCegarLoop]: 1076 mSDtfsCounter, 28 mSDsluCounter, 3220 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 4296 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:31,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 4296 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:31,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2024-10-11 06:12:31,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 945. [2024-10-11 06:12:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 944 states have (on average 1.4809322033898304) internal successors, (1398), 944 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:31,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1398 transitions. [2024-10-11 06:12:31,341 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1398 transitions. Word has length 88 [2024-10-11 06:12:31,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:31,341 INFO L471 AbstractCegarLoop]: Abstraction has 945 states and 1398 transitions. [2024-10-11 06:12:31,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1398 transitions. [2024-10-11 06:12:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-11 06:12:31,342 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:31,343 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:31,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 06:12:31,343 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:31,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:31,343 INFO L85 PathProgramCache]: Analyzing trace with hash 18569147, now seen corresponding path program 1 times [2024-10-11 06:12:31,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:31,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574248711] [2024-10-11 06:12:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:31,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:32,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:32,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574248711] [2024-10-11 06:12:32,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574248711] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:32,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:32,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:12:32,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109992382] [2024-10-11 06:12:32,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:32,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:32,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:32,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:32,048 INFO L87 Difference]: Start difference. First operand 945 states and 1398 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:32,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:32,546 INFO L93 Difference]: Finished difference Result 2255 states and 3336 transitions. [2024-10-11 06:12:32,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:32,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-10-11 06:12:32,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:32,555 INFO L225 Difference]: With dead ends: 2255 [2024-10-11 06:12:32,555 INFO L226 Difference]: Without dead ends: 1445 [2024-10-11 06:12:32,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:12:32,560 INFO L432 NwaCegarLoop]: 1023 mSDtfsCounter, 2636 mSDsluCounter, 4087 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2636 SdHoareTripleChecker+Valid, 5110 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:32,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2636 Valid, 5110 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 06:12:32,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2024-10-11 06:12:32,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 947. [2024-10-11 06:12:32,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 946 states have (on average 1.477801268498943) internal successors, (1398), 946 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:32,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1398 transitions. [2024-10-11 06:12:32,594 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1398 transitions. Word has length 88 [2024-10-11 06:12:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:32,594 INFO L471 AbstractCegarLoop]: Abstraction has 947 states and 1398 transitions. [2024-10-11 06:12:32,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1398 transitions. [2024-10-11 06:12:32,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-11 06:12:32,597 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:32,597 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:32,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 06:12:32,598 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:32,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:32,602 INFO L85 PathProgramCache]: Analyzing trace with hash -881939155, now seen corresponding path program 1 times [2024-10-11 06:12:32,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:32,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949779792] [2024-10-11 06:12:32,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:32,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:33,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:33,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949779792] [2024-10-11 06:12:33,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949779792] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:33,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:33,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:12:33,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482652312] [2024-10-11 06:12:33,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:33,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:33,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:33,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:33,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:33,461 INFO L87 Difference]: Start difference. First operand 947 states and 1398 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:33,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:33,955 INFO L93 Difference]: Finished difference Result 2070 states and 3058 transitions. [2024-10-11 06:12:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:33,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-10-11 06:12:33,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:33,962 INFO L225 Difference]: With dead ends: 2070 [2024-10-11 06:12:33,962 INFO L226 Difference]: Without dead ends: 1287 [2024-10-11 06:12:33,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:12:33,965 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 2146 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:33,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2146 Valid, 5115 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 06:12:33,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2024-10-11 06:12:33,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 949. [2024-10-11 06:12:33,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 948 states have (on average 1.4746835443037976) internal successors, (1398), 948 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1398 transitions. [2024-10-11 06:12:33,996 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1398 transitions. Word has length 89 [2024-10-11 06:12:33,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:33,996 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1398 transitions. [2024-10-11 06:12:33,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1398 transitions. [2024-10-11 06:12:33,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-11 06:12:33,998 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:33,998 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:33,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 06:12:33,998 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:33,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash -424143898, now seen corresponding path program 1 times [2024-10-11 06:12:33,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:33,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830001143] [2024-10-11 06:12:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:34,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:34,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:34,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830001143] [2024-10-11 06:12:34,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830001143] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:34,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:34,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:12:34,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359609894] [2024-10-11 06:12:34,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:34,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:34,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:34,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:34,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:34,784 INFO L87 Difference]: Start difference. First operand 949 states and 1398 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:35,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:35,226 INFO L93 Difference]: Finished difference Result 2283 states and 3366 transitions. [2024-10-11 06:12:35,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:35,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-10-11 06:12:35,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:35,232 INFO L225 Difference]: With dead ends: 2283 [2024-10-11 06:12:35,233 INFO L226 Difference]: Without dead ends: 1461 [2024-10-11 06:12:35,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:12:35,235 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 2666 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:35,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2666 Valid, 5115 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 06:12:35,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2024-10-11 06:12:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 951. [2024-10-11 06:12:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 950 states have (on average 1.471578947368421) internal successors, (1398), 950 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1398 transitions. [2024-10-11 06:12:35,261 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1398 transitions. Word has length 89 [2024-10-11 06:12:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:35,262 INFO L471 AbstractCegarLoop]: Abstraction has 951 states and 1398 transitions. [2024-10-11 06:12:35,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1398 transitions. [2024-10-11 06:12:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-11 06:12:35,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:35,263 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:35,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 06:12:35,263 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:35,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:35,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1121669815, now seen corresponding path program 1 times [2024-10-11 06:12:35,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:35,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713208438] [2024-10-11 06:12:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:35,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:36,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:36,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:36,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713208438] [2024-10-11 06:12:36,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713208438] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:36,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:36,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:12:36,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022528745] [2024-10-11 06:12:36,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:36,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 06:12:36,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:36,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 06:12:36,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:12:36,066 INFO L87 Difference]: Start difference. First operand 951 states and 1398 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:36,627 INFO L93 Difference]: Finished difference Result 2169 states and 3189 transitions. [2024-10-11 06:12:36,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 06:12:36,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-10-11 06:12:36,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:36,633 INFO L225 Difference]: With dead ends: 2169 [2024-10-11 06:12:36,634 INFO L226 Difference]: Without dead ends: 1290 [2024-10-11 06:12:36,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-11 06:12:36,636 INFO L432 NwaCegarLoop]: 1023 mSDtfsCounter, 2176 mSDsluCounter, 5109 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 6132 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:36,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2176 Valid, 6132 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 06:12:36,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2024-10-11 06:12:36,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 964. [2024-10-11 06:12:36,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 963 states have (on average 1.470404984423676) internal successors, (1416), 963 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1416 transitions. [2024-10-11 06:12:36,664 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1416 transitions. Word has length 89 [2024-10-11 06:12:36,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:36,665 INFO L471 AbstractCegarLoop]: Abstraction has 964 states and 1416 transitions. [2024-10-11 06:12:36,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:36,665 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1416 transitions. [2024-10-11 06:12:36,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-11 06:12:36,666 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:36,666 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:36,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 06:12:36,667 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:36,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:36,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1876464855, now seen corresponding path program 1 times [2024-10-11 06:12:36,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:36,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959715491] [2024-10-11 06:12:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:36,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:37,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:37,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959715491] [2024-10-11 06:12:37,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959715491] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:37,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:37,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:12:37,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541679610] [2024-10-11 06:12:37,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:37,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:12:37,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:37,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:12:37,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:12:37,247 INFO L87 Difference]: Start difference. First operand 964 states and 1416 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:37,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:37,578 INFO L93 Difference]: Finished difference Result 1981 states and 2920 transitions. [2024-10-11 06:12:37,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:12:37,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-10-11 06:12:37,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:37,584 INFO L225 Difference]: With dead ends: 1981 [2024-10-11 06:12:37,584 INFO L226 Difference]: Without dead ends: 1198 [2024-10-11 06:12:37,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:37,588 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 1953 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:37,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1953 Valid, 3077 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 06:12:37,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2024-10-11 06:12:37,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 950. [2024-10-11 06:12:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 949 states have (on average 1.4710221285563752) internal successors, (1396), 949 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1396 transitions. [2024-10-11 06:12:37,614 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1396 transitions. Word has length 90 [2024-10-11 06:12:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:37,614 INFO L471 AbstractCegarLoop]: Abstraction has 950 states and 1396 transitions. [2024-10-11 06:12:37,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1396 transitions. [2024-10-11 06:12:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-11 06:12:37,616 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:37,616 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:37,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 06:12:37,617 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:37,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:37,617 INFO L85 PathProgramCache]: Analyzing trace with hash -199225740, now seen corresponding path program 1 times [2024-10-11 06:12:37,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:37,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450842230] [2024-10-11 06:12:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:37,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:38,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:38,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450842230] [2024-10-11 06:12:38,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450842230] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:38,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:38,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 06:12:38,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100414127] [2024-10-11 06:12:38,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:38,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 06:12:38,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:38,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 06:12:38,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:12:38,759 INFO L87 Difference]: Start difference. First operand 950 states and 1396 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:39,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:39,409 INFO L93 Difference]: Finished difference Result 2214 states and 3252 transitions. [2024-10-11 06:12:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 06:12:39,410 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-10-11 06:12:39,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:39,416 INFO L225 Difference]: With dead ends: 2214 [2024-10-11 06:12:39,416 INFO L226 Difference]: Without dead ends: 1388 [2024-10-11 06:12:39,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-10-11 06:12:39,419 INFO L432 NwaCegarLoop]: 1023 mSDtfsCounter, 2480 mSDsluCounter, 6127 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2480 SdHoareTripleChecker+Valid, 7150 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:39,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2480 Valid, 7150 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 06:12:39,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2024-10-11 06:12:39,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 968. [2024-10-11 06:12:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 1.468459152016546) internal successors, (1420), 967 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:39,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1420 transitions. [2024-10-11 06:12:39,448 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1420 transitions. Word has length 90 [2024-10-11 06:12:39,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:39,448 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1420 transitions. [2024-10-11 06:12:39,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1420 transitions. [2024-10-11 06:12:39,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-11 06:12:39,450 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:39,450 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:39,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 06:12:39,450 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:39,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:39,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1761932326, now seen corresponding path program 1 times [2024-10-11 06:12:39,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:39,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145088544] [2024-10-11 06:12:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:39,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:40,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:40,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145088544] [2024-10-11 06:12:40,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145088544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:40,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:40,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:12:40,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181570206] [2024-10-11 06:12:40,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:40,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:40,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:40,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:40,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:40,255 INFO L87 Difference]: Start difference. First operand 968 states and 1420 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:40,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:40,697 INFO L93 Difference]: Finished difference Result 2169 states and 3183 transitions. [2024-10-11 06:12:40,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:40,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-10-11 06:12:40,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:40,703 INFO L225 Difference]: With dead ends: 2169 [2024-10-11 06:12:40,703 INFO L226 Difference]: Without dead ends: 1269 [2024-10-11 06:12:40,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:12:40,706 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 2134 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2134 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:40,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2134 Valid, 5115 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 06:12:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2024-10-11 06:12:40,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 969. [2024-10-11 06:12:40,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 968 states have (on average 1.4669421487603307) internal successors, (1420), 968 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1420 transitions. [2024-10-11 06:12:40,728 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1420 transitions. Word has length 90 [2024-10-11 06:12:40,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:40,728 INFO L471 AbstractCegarLoop]: Abstraction has 969 states and 1420 transitions. [2024-10-11 06:12:40,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:40,729 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1420 transitions. [2024-10-11 06:12:40,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-11 06:12:40,730 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:40,730 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:40,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 06:12:40,730 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:40,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:40,731 INFO L85 PathProgramCache]: Analyzing trace with hash 698468340, now seen corresponding path program 1 times [2024-10-11 06:12:40,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:40,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611501606] [2024-10-11 06:12:40,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:40,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:41,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:41,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:41,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611501606] [2024-10-11 06:12:41,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611501606] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:41,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:41,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:12:41,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528911235] [2024-10-11 06:12:41,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:41,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:41,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:41,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:41,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:41,389 INFO L87 Difference]: Start difference. First operand 969 states and 1420 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:41,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:41,849 INFO L93 Difference]: Finished difference Result 2243 states and 3294 transitions. [2024-10-11 06:12:41,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:41,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-10-11 06:12:41,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:41,855 INFO L225 Difference]: With dead ends: 2243 [2024-10-11 06:12:41,855 INFO L226 Difference]: Without dead ends: 1391 [2024-10-11 06:12:41,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:12:41,858 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 2476 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2476 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:41,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2476 Valid, 5115 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 06:12:41,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2024-10-11 06:12:41,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 971. [2024-10-11 06:12:41,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.4639175257731958) internal successors, (1420), 970 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1420 transitions. [2024-10-11 06:12:41,883 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1420 transitions. Word has length 91 [2024-10-11 06:12:41,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:41,884 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1420 transitions. [2024-10-11 06:12:41,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:41,884 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1420 transitions. [2024-10-11 06:12:41,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-11 06:12:41,885 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:41,885 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:41,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 06:12:41,886 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:41,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:41,886 INFO L85 PathProgramCache]: Analyzing trace with hash -67579682, now seen corresponding path program 1 times [2024-10-11 06:12:41,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:41,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829545682] [2024-10-11 06:12:41,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:41,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:42,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:42,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829545682] [2024-10-11 06:12:42,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829545682] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:42,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:42,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:12:42,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726518848] [2024-10-11 06:12:42,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:42,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:42,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:42,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:42,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:42,448 INFO L87 Difference]: Start difference. First operand 971 states and 1420 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:42,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:42,873 INFO L93 Difference]: Finished difference Result 2115 states and 3093 transitions. [2024-10-11 06:12:42,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:42,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-10-11 06:12:42,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:42,879 INFO L225 Difference]: With dead ends: 2115 [2024-10-11 06:12:42,879 INFO L226 Difference]: Without dead ends: 1208 [2024-10-11 06:12:42,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:12:42,882 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 1936 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:42,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1936 Valid, 5115 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 06:12:42,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2024-10-11 06:12:42,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 972. [2024-10-11 06:12:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.462409886714727) internal successors, (1420), 971 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1420 transitions. [2024-10-11 06:12:42,902 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1420 transitions. Word has length 91 [2024-10-11 06:12:42,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:42,902 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1420 transitions. [2024-10-11 06:12:42,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:42,903 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1420 transitions. [2024-10-11 06:12:42,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-11 06:12:42,903 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:42,904 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:42,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 06:12:42,904 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:42,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:42,905 INFO L85 PathProgramCache]: Analyzing trace with hash -875690291, now seen corresponding path program 1 times [2024-10-11 06:12:42,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:42,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523531489] [2024-10-11 06:12:42,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:42,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:43,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:43,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523531489] [2024-10-11 06:12:43,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523531489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:43,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:43,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:12:43,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776032931] [2024-10-11 06:12:43,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:43,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:43,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:43,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:43,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:43,581 INFO L87 Difference]: Start difference. First operand 972 states and 1420 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:44,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:44,010 INFO L93 Difference]: Finished difference Result 2096 states and 3070 transitions. [2024-10-11 06:12:44,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:44,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-10-11 06:12:44,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:44,018 INFO L225 Difference]: With dead ends: 2096 [2024-10-11 06:12:44,019 INFO L226 Difference]: Without dead ends: 1264 [2024-10-11 06:12:44,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:12:44,021 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 2066 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:44,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2066 Valid, 5115 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 06:12:44,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2024-10-11 06:12:44,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 972. [2024-10-11 06:12:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.458290422245108) internal successors, (1416), 971 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:44,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1416 transitions. [2024-10-11 06:12:44,045 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1416 transitions. Word has length 92 [2024-10-11 06:12:44,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:44,046 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1416 transitions. [2024-10-11 06:12:44,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:44,046 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1416 transitions. [2024-10-11 06:12:44,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-11 06:12:44,047 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:44,047 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:44,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 06:12:44,048 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:44,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:44,048 INFO L85 PathProgramCache]: Analyzing trace with hash 58032511, now seen corresponding path program 1 times [2024-10-11 06:12:44,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:44,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21296462] [2024-10-11 06:12:44,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:44,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:44,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:44,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21296462] [2024-10-11 06:12:44,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21296462] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:44,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:44,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:12:44,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200121194] [2024-10-11 06:12:44,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:44,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:12:44,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:44,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:12:44,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:12:44,489 INFO L87 Difference]: Start difference. First operand 972 states and 1416 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:44,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:44,800 INFO L93 Difference]: Finished difference Result 2057 states and 3006 transitions. [2024-10-11 06:12:44,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:12:44,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-10-11 06:12:44,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:44,804 INFO L225 Difference]: With dead ends: 2057 [2024-10-11 06:12:44,805 INFO L226 Difference]: Without dead ends: 1150 [2024-10-11 06:12:44,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:44,807 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 1935 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:44,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1935 Valid, 3077 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 06:12:44,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2024-10-11 06:12:44,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 902. [2024-10-11 06:12:44,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 901 states have (on average 1.46503884572697) internal successors, (1320), 901 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1320 transitions. [2024-10-11 06:12:44,828 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1320 transitions. Word has length 92 [2024-10-11 06:12:44,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:44,829 INFO L471 AbstractCegarLoop]: Abstraction has 902 states and 1320 transitions. [2024-10-11 06:12:44,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1320 transitions. [2024-10-11 06:12:44,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-11 06:12:44,830 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:44,830 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:44,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 06:12:44,831 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:44,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:44,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1247142796, now seen corresponding path program 1 times [2024-10-11 06:12:44,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:44,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651247900] [2024-10-11 06:12:44,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:44,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:45,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:45,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651247900] [2024-10-11 06:12:45,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651247900] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:45,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:45,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:12:45,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906917618] [2024-10-11 06:12:45,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:45,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:12:45,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:45,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:12:45,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:12:45,274 INFO L87 Difference]: Start difference. First operand 902 states and 1320 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:45,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:45,612 INFO L93 Difference]: Finished difference Result 1950 states and 2870 transitions. [2024-10-11 06:12:45,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:12:45,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-10-11 06:12:45,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:45,617 INFO L225 Difference]: With dead ends: 1950 [2024-10-11 06:12:45,617 INFO L226 Difference]: Without dead ends: 1147 [2024-10-11 06:12:45,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:45,619 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 2025 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:45,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 3077 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 06:12:45,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2024-10-11 06:12:45,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 860. [2024-10-11 06:12:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 859 states have (on average 1.4714784633294529) internal successors, (1264), 859 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1264 transitions. [2024-10-11 06:12:45,636 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1264 transitions. Word has length 93 [2024-10-11 06:12:45,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:45,636 INFO L471 AbstractCegarLoop]: Abstraction has 860 states and 1264 transitions. [2024-10-11 06:12:45,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:45,637 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1264 transitions. [2024-10-11 06:12:45,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-10-11 06:12:45,642 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:45,642 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:45,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 06:12:45,643 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:45,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:45,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1210471471, now seen corresponding path program 1 times [2024-10-11 06:12:45,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:45,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769986163] [2024-10-11 06:12:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:45,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:13:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:13:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:13:02,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:13:02,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769986163] [2024-10-11 06:13:02,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769986163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:13:02,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:13:02,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:13:02,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185327468] [2024-10-11 06:13:02,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:13:02,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:13:02,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:13:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:13:02,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:13:02,499 INFO L87 Difference]: Start difference. First operand 860 states and 1264 transitions. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:13:02,942 INFO L93 Difference]: Finished difference Result 2228 states and 3297 transitions. [2024-10-11 06:13:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:13:02,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 418 [2024-10-11 06:13:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:13:02,946 INFO L225 Difference]: With dead ends: 2228 [2024-10-11 06:13:02,946 INFO L226 Difference]: Without dead ends: 864 [2024-10-11 06:13:02,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:13:02,948 INFO L432 NwaCegarLoop]: 1277 mSDtfsCounter, 528 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 4640 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 06:13:02,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 4640 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 06:13:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2024-10-11 06:13:02,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 862. [2024-10-11 06:13:02,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 1.470383275261324) internal successors, (1266), 861 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:02,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1266 transitions. [2024-10-11 06:13:02,964 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1266 transitions. Word has length 418 [2024-10-11 06:13:02,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:13:02,964 INFO L471 AbstractCegarLoop]: Abstraction has 862 states and 1266 transitions. [2024-10-11 06:13:02,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:02,965 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1266 transitions. [2024-10-11 06:13:02,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-10-11 06:13:02,971 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:13:02,971 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:13:02,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 06:13:02,972 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:13:02,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:13:02,972 INFO L85 PathProgramCache]: Analyzing trace with hash -829954929, now seen corresponding path program 1 times [2024-10-11 06:13:02,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:13:02,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550196038] [2024-10-11 06:13:02,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:13:02,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:13:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:13:09,856 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:13:09,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:13:09,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550196038] [2024-10-11 06:13:09,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550196038] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:13:09,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:13:09,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:13:09,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088883220] [2024-10-11 06:13:09,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:13:09,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:13:09,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:13:09,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:13:09,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:13:09,860 INFO L87 Difference]: Start difference. First operand 862 states and 1266 transitions. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:10,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:13:10,392 INFO L93 Difference]: Finished difference Result 1605 states and 2369 transitions. [2024-10-11 06:13:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:13:10,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 419 [2024-10-11 06:13:10,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:13:10,397 INFO L225 Difference]: With dead ends: 1605 [2024-10-11 06:13:10,397 INFO L226 Difference]: Without dead ends: 866 [2024-10-11 06:13:10,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:13:10,399 INFO L432 NwaCegarLoop]: 813 mSDtfsCounter, 999 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 06:13:10,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 2435 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 06:13:10,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2024-10-11 06:13:10,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 864. [2024-10-11 06:13:10,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 1.4692931633835458) internal successors, (1268), 863 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:10,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1268 transitions. [2024-10-11 06:13:10,412 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1268 transitions. Word has length 419 [2024-10-11 06:13:10,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:13:10,412 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 1268 transitions. [2024-10-11 06:13:10,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1268 transitions. [2024-10-11 06:13:10,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-10-11 06:13:10,417 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:13:10,417 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:13:10,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 06:13:10,418 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:13:10,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:13:10,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1401586396, now seen corresponding path program 1 times [2024-10-11 06:13:10,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:13:10,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609437069] [2024-10-11 06:13:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:13:10,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:13:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat