./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8756b08be05a2754ba7f473b23db96aacdd088f16a43249dcd482c532b48d535 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:47:30,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:47:30,140 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:47:30,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:47:30,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:47:30,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:47:30,173 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:47:30,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:47:30,174 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:47:30,174 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:47:30,175 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:47:30,175 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:47:30,176 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:47:30,176 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:47:30,178 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:47:30,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:47:30,178 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:47:30,179 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:47:30,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:47:30,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:47:30,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:47:30,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:47:30,183 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:47:30,183 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:47:30,183 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:47:30,183 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:47:30,183 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:47:30,183 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:47:30,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:47:30,184 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:47:30,184 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:47:30,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:47:30,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:47:30,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:47:30,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:47:30,185 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:47:30,185 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:47:30,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:47:30,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:47:30,186 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:47:30,188 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:47:30,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:47:30,188 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8756b08be05a2754ba7f473b23db96aacdd088f16a43249dcd482c532b48d535 [2024-11-18 23:47:30,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:47:30,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:47:30,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:47:30,493 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:47:30,493 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:47:30,494 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-8.i [2024-11-18 23:47:31,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:47:32,157 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:47:32,157 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-8.i [2024-11-18 23:47:32,169 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50b7acfa1/d0599780ab9c41ae92388f1a186656bf/FLAGda4bb8514 [2024-11-18 23:47:32,490 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50b7acfa1/d0599780ab9c41ae92388f1a186656bf [2024-11-18 23:47:32,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:47:32,495 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:47:32,498 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:47:32,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:47:32,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:47:32,504 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:47:32" (1/1) ... [2024-11-18 23:47:32,505 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1272ced0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:32, skipping insertion in model container [2024-11-18 23:47:32,505 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:47:32" (1/1) ... [2024-11-18 23:47:32,559 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:47:32,751 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-8.i[915,928] [2024-11-18 23:47:32,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:47:32,927 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:47:32,942 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-8.i[915,928] [2024-11-18 23:47:33,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:47:33,079 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:47:33,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:33 WrapperNode [2024-11-18 23:47:33,080 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:47:33,081 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:47:33,081 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:47:33,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:47:33,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:33" (1/1) ... [2024-11-18 23:47:33,119 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:33" (1/1) ... [2024-11-18 23:47:33,194 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 397 [2024-11-18 23:47:33,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:47:33,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:47:33,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:47:33,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:47:33,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:33" (1/1) ... [2024-11-18 23:47:33,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:33" (1/1) ... [2024-11-18 23:47:33,219 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:33" (1/1) ... [2024-11-18 23:47:33,262 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 23:47:33,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:33" (1/1) ... [2024-11-18 23:47:33,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:33" (1/1) ... [2024-11-18 23:47:33,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:33" (1/1) ... [2024-11-18 23:47:33,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:33" (1/1) ... [2024-11-18 23:47:33,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:33" (1/1) ... [2024-11-18 23:47:33,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:33" (1/1) ... [2024-11-18 23:47:33,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:47:33,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:47:33,327 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:47:33,327 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:47:33,327 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:33" (1/1) ... [2024-11-18 23:47:33,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:47:33,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:47:33,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 23:47:33,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 23:47:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:47:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:47:33,411 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:47:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:47:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:47:33,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:47:33,533 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:47:33,536 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:47:34,279 INFO L? ?]: Removed 50 outVars from TransFormulas that were not future-live. [2024-11-18 23:47:34,279 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:47:34,299 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:47:34,299 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:47:34,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:47:34 BoogieIcfgContainer [2024-11-18 23:47:34,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:47:34,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:47:34,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:47:34,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:47:34,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:47:32" (1/3) ... [2024-11-18 23:47:34,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a72a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:47:34, skipping insertion in model container [2024-11-18 23:47:34,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:33" (2/3) ... [2024-11-18 23:47:34,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a72a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:47:34, skipping insertion in model container [2024-11-18 23:47:34,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:47:34" (3/3) ... [2024-11-18 23:47:34,312 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-8.i [2024-11-18 23:47:34,326 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:47:34,327 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:47:34,402 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:47:34,410 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;@4d6f226d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:47:34,410 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:47:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 121 states have (on average 1.5206611570247934) internal successors, (184), 122 states have internal predecessors, (184), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-18 23:47:34,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-18 23:47:34,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:34,440 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:47:34,442 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:34,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:34,447 INFO L85 PathProgramCache]: Analyzing trace with hash 859668713, now seen corresponding path program 1 times [2024-11-18 23:47:34,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:34,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332598940] [2024-11-18 23:47:34,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:34,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-18 23:47:34,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:34,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332598940] [2024-11-18 23:47:34,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332598940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:47:34,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029950149] [2024-11-18 23:47:34,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:34,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:47:34,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:47:34,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:47:34,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:47:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:35,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:47:35,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:47:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-18 23:47:35,334 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:47:35,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029950149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:35,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:47:35,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:47:35,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303136603] [2024-11-18 23:47:35,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:35,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:47:35,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:35,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:47:35,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:47:35,378 INFO L87 Difference]: Start difference. First operand has 174 states, 121 states have (on average 1.5206611570247934) internal successors, (184), 122 states have internal predecessors, (184), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:47:35,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:35,421 INFO L93 Difference]: Finished difference Result 341 states and 612 transitions. [2024-11-18 23:47:35,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:47:35,425 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) Word has length 327 [2024-11-18 23:47:35,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:35,434 INFO L225 Difference]: With dead ends: 341 [2024-11-18 23:47:35,434 INFO L226 Difference]: Without dead ends: 170 [2024-11-18 23:47:35,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:47:35,444 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:35,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:47:35,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-18 23:47:35,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-18 23:47:35,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 118 states have (on average 1.5) internal successors, (177), 118 states have internal predecessors, (177), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-18 23:47:35,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 277 transitions. [2024-11-18 23:47:35,517 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 277 transitions. Word has length 327 [2024-11-18 23:47:35,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:35,521 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 277 transitions. [2024-11-18 23:47:35,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:47:35,522 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 277 transitions. [2024-11-18 23:47:35,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-18 23:47:35,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:35,529 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:47:35,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:47:35,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:47:35,734 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:35,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:35,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1680787873, now seen corresponding path program 1 times [2024-11-18 23:47:35,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:35,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847759662] [2024-11-18 23:47:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:35,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-18 23:47:36,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:36,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847759662] [2024-11-18 23:47:36,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847759662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:36,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:47:36,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:47:36,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796895468] [2024-11-18 23:47:36,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:36,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:47:36,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:36,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:47:36,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:47:36,089 INFO L87 Difference]: Start difference. First operand 170 states and 277 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:47:36,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:36,270 INFO L93 Difference]: Finished difference Result 491 states and 799 transitions. [2024-11-18 23:47:36,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:47:36,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 327 [2024-11-18 23:47:36,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:36,278 INFO L225 Difference]: With dead ends: 491 [2024-11-18 23:47:36,279 INFO L226 Difference]: Without dead ends: 324 [2024-11-18 23:47:36,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:47:36,282 INFO L432 NwaCegarLoop]: 439 mSDtfsCounter, 244 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:36,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 664 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:47:36,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-18 23:47:36,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 322. [2024-11-18 23:47:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 219 states have (on average 1.4246575342465753) internal successors, (312), 219 states have internal predecessors, (312), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 23:47:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 512 transitions. [2024-11-18 23:47:36,336 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 512 transitions. Word has length 327 [2024-11-18 23:47:36,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:36,338 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 512 transitions. [2024-11-18 23:47:36,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:47:36,339 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 512 transitions. [2024-11-18 23:47:36,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-18 23:47:36,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:36,345 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:47:36,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:47:36,346 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:36,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:36,347 INFO L85 PathProgramCache]: Analyzing trace with hash -377571607, now seen corresponding path program 1 times [2024-11-18 23:47:36,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:36,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883406931] [2024-11-18 23:47:36,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:36,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-18 23:47:36,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:36,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883406931] [2024-11-18 23:47:36,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883406931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:36,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:47:36,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:47:36,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119241030] [2024-11-18 23:47:36,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:36,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:47:36,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:36,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:47:36,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:47:36,601 INFO L87 Difference]: Start difference. First operand 322 states and 512 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:47:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:36,743 INFO L93 Difference]: Finished difference Result 648 states and 1030 transitions. [2024-11-18 23:47:36,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:47:36,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 327 [2024-11-18 23:47:36,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:36,748 INFO L225 Difference]: With dead ends: 648 [2024-11-18 23:47:36,748 INFO L226 Difference]: Without dead ends: 329 [2024-11-18 23:47:36,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:47:36,751 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 220 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:36,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 488 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:47:36,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-18 23:47:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2024-11-18 23:47:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 224 states have (on average 1.3705357142857142) internal successors, (307), 224 states have internal predecessors, (307), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 23:47:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 507 transitions. [2024-11-18 23:47:36,788 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 507 transitions. Word has length 327 [2024-11-18 23:47:36,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:36,789 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 507 transitions. [2024-11-18 23:47:36,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:47:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 507 transitions. [2024-11-18 23:47:36,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-18 23:47:36,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:36,794 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:47:36,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:47:36,794 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:36,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:36,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1923250983, now seen corresponding path program 1 times [2024-11-18 23:47:36,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:36,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250099953] [2024-11-18 23:47:36,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:36,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-18 23:47:37,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:37,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250099953] [2024-11-18 23:47:37,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250099953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:37,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:47:37,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:47:37,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718730973] [2024-11-18 23:47:37,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:37,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:47:37,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:37,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:47:37,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:47:37,596 INFO L87 Difference]: Start difference. First operand 327 states and 507 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:47:37,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:37,705 INFO L93 Difference]: Finished difference Result 752 states and 1167 transitions. [2024-11-18 23:47:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:47:37,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 327 [2024-11-18 23:47:37,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:37,713 INFO L225 Difference]: With dead ends: 752 [2024-11-18 23:47:37,714 INFO L226 Difference]: Without dead ends: 428 [2024-11-18 23:47:37,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:47:37,717 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 233 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:37,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 650 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:47:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-18 23:47:37,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 327. [2024-11-18 23:47:37,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 224 states have (on average 1.3616071428571428) internal successors, (305), 224 states have internal predecessors, (305), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 23:47:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 505 transitions. [2024-11-18 23:47:37,780 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 505 transitions. Word has length 327 [2024-11-18 23:47:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:37,782 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 505 transitions. [2024-11-18 23:47:37,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:47:37,783 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 505 transitions. [2024-11-18 23:47:37,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-11-18 23:47:37,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:37,790 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:47:37,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:47:37,792 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:37,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:37,793 INFO L85 PathProgramCache]: Analyzing trace with hash -427317489, now seen corresponding path program 1 times [2024-11-18 23:47:37,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:37,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432387766] [2024-11-18 23:47:37,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:37,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-18 23:47:38,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:38,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432387766] [2024-11-18 23:47:38,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432387766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:38,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:47:38,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:47:38,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561527579] [2024-11-18 23:47:38,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:38,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:47:38,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:38,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:47:38,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:47:38,277 INFO L87 Difference]: Start difference. First operand 327 states and 505 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:47:38,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:38,410 INFO L93 Difference]: Finished difference Result 820 states and 1263 transitions. [2024-11-18 23:47:38,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:47:38,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 328 [2024-11-18 23:47:38,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:38,415 INFO L225 Difference]: With dead ends: 820 [2024-11-18 23:47:38,415 INFO L226 Difference]: Without dead ends: 496 [2024-11-18 23:47:38,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:47:38,417 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 142 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:38,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 490 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:47:38,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-11-18 23:47:38,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 486. [2024-11-18 23:47:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 332 states have (on average 1.3524096385542168) internal successors, (449), 332 states have internal predecessors, (449), 150 states have call successors, (150), 3 states have call predecessors, (150), 3 states have return successors, (150), 150 states have call predecessors, (150), 150 states have call successors, (150) [2024-11-18 23:47:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 749 transitions. [2024-11-18 23:47:38,476 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 749 transitions. Word has length 328 [2024-11-18 23:47:38,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:38,476 INFO L471 AbstractCegarLoop]: Abstraction has 486 states and 749 transitions. [2024-11-18 23:47:38,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:47:38,477 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 749 transitions. [2024-11-18 23:47:38,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-11-18 23:47:38,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:38,483 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:47:38,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:47:38,483 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:38,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:38,484 INFO L85 PathProgramCache]: Analyzing trace with hash -286768879, now seen corresponding path program 1 times [2024-11-18 23:47:38,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:38,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275488787] [2024-11-18 23:47:38,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:38,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 63 proven. 84 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2024-11-18 23:47:39,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:39,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275488787] [2024-11-18 23:47:39,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275488787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:47:39,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571647989] [2024-11-18 23:47:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:39,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:47:39,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:47:39,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:47:39,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 23:47:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:40,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 23:47:40,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:47:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 939 proven. 132 refuted. 0 times theorem prover too weak. 3829 trivial. 0 not checked. [2024-11-18 23:47:41,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:47:41,562 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_z_2 Int) (~var_1_4~0 Int)) (or (< ~var_1_4~0 (+ c_~var_1_8~0 1)) (< c_~var_1_34~0 (mod v_z_2 ~var_1_4~0)) (< v_z_2 0) (< 65535 v_z_2))) is different from false [2024-11-18 23:47:41,911 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_z_2 Int) (~var_1_4~0 Int)) (or (< ~var_1_4~0 (+ c_~var_1_8~0 1)) (< v_z_2 0) (< 65535 v_z_2) (< 0 (+ (* 101 (mod v_z_2 ~var_1_4~0)) (* (mod c_~var_1_46~0 256) 100))))) is different from false [2024-11-18 23:47:42,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571647989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:47:42,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:47:42,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2024-11-18 23:47:42,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251373722] [2024-11-18 23:47:42,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:47:42,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 23:47:42,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:42,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 23:47:42,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=475, Unknown=4, NotChecked=90, Total=650 [2024-11-18 23:47:42,219 INFO L87 Difference]: Start difference. First operand 486 states and 749 transitions. Second operand has 19 states, 18 states have (on average 8.833333333333334) internal successors, (159), 19 states have internal predecessors, (159), 5 states have call successors, (100), 3 states have call predecessors, (100), 5 states have return successors, (100), 4 states have call predecessors, (100), 5 states have call successors, (100) [2024-11-18 23:47:44,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:44,583 INFO L93 Difference]: Finished difference Result 1543 states and 2329 transitions. [2024-11-18 23:47:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 23:47:44,584 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 8.833333333333334) internal successors, (159), 19 states have internal predecessors, (159), 5 states have call successors, (100), 3 states have call predecessors, (100), 5 states have return successors, (100), 4 states have call predecessors, (100), 5 states have call successors, (100) Word has length 328 [2024-11-18 23:47:44,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:44,591 INFO L225 Difference]: With dead ends: 1543 [2024-11-18 23:47:44,591 INFO L226 Difference]: Without dead ends: 1060 [2024-11-18 23:47:44,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=337, Invalid=1473, Unknown=4, NotChecked=166, Total=1980 [2024-11-18 23:47:44,597 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 710 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 2136 mSolverCounterSat, 154 mSolverCounterUnsat, 52 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2136 IncrementalHoareTripleChecker+Invalid, 52 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:44,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 2874 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2136 Invalid, 52 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 23:47:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2024-11-18 23:47:44,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1036. [2024-11-18 23:47:44,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 753 states have (on average 1.3346613545816732) internal successors, (1005), 756 states have internal predecessors, (1005), 265 states have call successors, (265), 17 states have call predecessors, (265), 17 states have return successors, (265), 262 states have call predecessors, (265), 265 states have call successors, (265) [2024-11-18 23:47:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1535 transitions. [2024-11-18 23:47:44,690 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1535 transitions. Word has length 328 [2024-11-18 23:47:44,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:44,691 INFO L471 AbstractCegarLoop]: Abstraction has 1036 states and 1535 transitions. [2024-11-18 23:47:44,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 8.833333333333334) internal successors, (159), 19 states have internal predecessors, (159), 5 states have call successors, (100), 3 states have call predecessors, (100), 5 states have return successors, (100), 4 states have call predecessors, (100), 5 states have call successors, (100) [2024-11-18 23:47:44,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1535 transitions. [2024-11-18 23:47:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-11-18 23:47:44,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:44,696 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:47:44,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 23:47:44,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 23:47:44,897 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:44,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:44,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2086612944, now seen corresponding path program 1 times [2024-11-18 23:47:44,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:44,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593119756] [2024-11-18 23:47:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:44,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-18 23:47:45,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:45,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593119756] [2024-11-18 23:47:45,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593119756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:45,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:47:45,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:47:45,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373916430] [2024-11-18 23:47:45,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:45,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:47:45,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:45,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:47:45,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:47:45,319 INFO L87 Difference]: Start difference. First operand 1036 states and 1535 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:47:45,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:45,635 INFO L93 Difference]: Finished difference Result 1837 states and 2732 transitions. [2024-11-18 23:47:45,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:47:45,636 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), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 331 [2024-11-18 23:47:45,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:45,644 INFO L225 Difference]: With dead ends: 1837 [2024-11-18 23:47:45,645 INFO L226 Difference]: Without dead ends: 1038 [2024-11-18 23:47:45,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:47:45,648 INFO L432 NwaCegarLoop]: 468 mSDtfsCounter, 231 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:45,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1034 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:47:45,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2024-11-18 23:47:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1036. [2024-11-18 23:47:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 753 states have (on average 1.3306772908366533) internal successors, (1002), 756 states have internal predecessors, (1002), 265 states have call successors, (265), 17 states have call predecessors, (265), 17 states have return successors, (265), 262 states have call predecessors, (265), 265 states have call successors, (265) [2024-11-18 23:47:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1532 transitions. [2024-11-18 23:47:45,736 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1532 transitions. Word has length 331 [2024-11-18 23:47:45,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:45,737 INFO L471 AbstractCegarLoop]: Abstraction has 1036 states and 1532 transitions. [2024-11-18 23:47:45,737 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), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:47:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1532 transitions. [2024-11-18 23:47:45,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-11-18 23:47:45,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:45,741 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:47:45,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:47:45,742 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:45,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:45,742 INFO L85 PathProgramCache]: Analyzing trace with hash -986520794, now seen corresponding path program 1 times [2024-11-18 23:47:45,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:45,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857109705] [2024-11-18 23:47:45,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:45,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 87 proven. 60 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2024-11-18 23:47:48,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:48,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857109705] [2024-11-18 23:47:48,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857109705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:47:48,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91728032] [2024-11-18 23:47:48,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:48,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:47:48,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:47:48,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:47:48,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 23:47:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:48,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-18 23:47:48,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:47:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 3105 proven. 249 refuted. 0 times theorem prover too weak. 1546 trivial. 0 not checked. [2024-11-18 23:47:52,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:47:59,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91728032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:47:59,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:47:59,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20] total 28 [2024-11-18 23:47:59,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517211177] [2024-11-18 23:47:59,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:47:59,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 23:47:59,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 23:47:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=1104, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 23:47:59,355 INFO L87 Difference]: Start difference. First operand 1036 states and 1532 transitions. Second operand has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 26 states have internal predecessors, (187), 9 states have call successors, (100), 7 states have call predecessors, (100), 11 states have return successors, (100), 9 states have call predecessors, (100), 9 states have call successors, (100) [2024-11-18 23:48:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:03,849 INFO L93 Difference]: Finished difference Result 3647 states and 5191 transitions. [2024-11-18 23:48:03,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-18 23:48:03,850 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 26 states have internal predecessors, (187), 9 states have call successors, (100), 7 states have call predecessors, (100), 11 states have return successors, (100), 9 states have call predecessors, (100), 9 states have call successors, (100) Word has length 331 [2024-11-18 23:48:03,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:03,864 INFO L225 Difference]: With dead ends: 3647 [2024-11-18 23:48:03,865 INFO L226 Difference]: Without dead ends: 2614 [2024-11-18 23:48:03,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2958 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2222, Invalid=7090, Unknown=0, NotChecked=0, Total=9312 [2024-11-18 23:48:03,871 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 2262 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 1119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 3553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1119 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:03,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2362 Valid, 2131 Invalid, 3553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1119 Valid, 2434 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-18 23:48:03,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2024-11-18 23:48:04,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2233. [2024-11-18 23:48:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2233 states, 1674 states have (on average 1.2998805256869772) internal successors, (2176), 1687 states have internal predecessors, (2176), 503 states have call successors, (503), 55 states have call predecessors, (503), 55 states have return successors, (503), 490 states have call predecessors, (503), 503 states have call successors, (503) [2024-11-18 23:48:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 3182 transitions. [2024-11-18 23:48:04,076 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 3182 transitions. Word has length 331 [2024-11-18 23:48:04,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:04,077 INFO L471 AbstractCegarLoop]: Abstraction has 2233 states and 3182 transitions. [2024-11-18 23:48:04,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 26 states have internal predecessors, (187), 9 states have call successors, (100), 7 states have call predecessors, (100), 11 states have return successors, (100), 9 states have call predecessors, (100), 9 states have call successors, (100) [2024-11-18 23:48:04,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 3182 transitions. [2024-11-18 23:48:04,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-18 23:48:04,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:04,085 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:04,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 23:48:04,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:48:04,290 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:04,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:04,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1201607615, now seen corresponding path program 1 times [2024-11-18 23:48:04,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:04,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721359694] [2024-11-18 23:48:04,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:04,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-18 23:48:04,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:04,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721359694] [2024-11-18 23:48:04,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721359694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:04,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:04,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 23:48:04,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522639161] [2024-11-18 23:48:04,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:04,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 23:48:04,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:04,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 23:48:04,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:48:04,940 INFO L87 Difference]: Start difference. First operand 2233 states and 3182 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:48:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:06,514 INFO L93 Difference]: Finished difference Result 3022 states and 4328 transitions. [2024-11-18 23:48:06,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:48:06,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 332 [2024-11-18 23:48:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:06,531 INFO L225 Difference]: With dead ends: 3022 [2024-11-18 23:48:06,531 INFO L226 Difference]: Without dead ends: 2698 [2024-11-18 23:48:06,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:48:06,535 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 694 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:06,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 1218 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 23:48:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2024-11-18 23:48:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2642. [2024-11-18 23:48:06,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 1996 states have (on average 1.3066132264529058) internal successors, (2608), 2013 states have internal predecessors, (2608), 571 states have call successors, (571), 74 states have call predecessors, (571), 74 states have return successors, (571), 554 states have call predecessors, (571), 571 states have call successors, (571) [2024-11-18 23:48:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3750 transitions. [2024-11-18 23:48:06,809 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3750 transitions. Word has length 332 [2024-11-18 23:48:06,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:06,810 INFO L471 AbstractCegarLoop]: Abstraction has 2642 states and 3750 transitions. [2024-11-18 23:48:06,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:48:06,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3750 transitions. [2024-11-18 23:48:06,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-18 23:48:06,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:06,816 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:06,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 23:48:06,817 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:06,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:06,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1273994173, now seen corresponding path program 1 times [2024-11-18 23:48:06,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:06,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852560970] [2024-11-18 23:48:06,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:06,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-18 23:48:07,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:07,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852560970] [2024-11-18 23:48:07,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852560970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:07,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:07,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 23:48:07,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490850442] [2024-11-18 23:48:07,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:07,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:48:07,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:07,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:48:07,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:48:07,900 INFO L87 Difference]: Start difference. First operand 2642 states and 3750 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:48:09,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:09,468 INFO L93 Difference]: Finished difference Result 3859 states and 5555 transitions. [2024-11-18 23:48:09,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:48:09,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 332 [2024-11-18 23:48:09,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:09,488 INFO L225 Difference]: With dead ends: 3859 [2024-11-18 23:48:09,488 INFO L226 Difference]: Without dead ends: 3384 [2024-11-18 23:48:09,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:48:09,492 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 794 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:09,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1248 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 23:48:09,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2024-11-18 23:48:09,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 2760. [2024-11-18 23:48:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2760 states, 2096 states have (on average 1.3120229007633588) internal successors, (2750), 2114 states have internal predecessors, (2750), 586 states have call successors, (586), 77 states have call predecessors, (586), 77 states have return successors, (586), 568 states have call predecessors, (586), 586 states have call successors, (586) [2024-11-18 23:48:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 3922 transitions. [2024-11-18 23:48:09,841 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 3922 transitions. Word has length 332 [2024-11-18 23:48:09,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:09,842 INFO L471 AbstractCegarLoop]: Abstraction has 2760 states and 3922 transitions. [2024-11-18 23:48:09,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:48:09,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 3922 transitions. [2024-11-18 23:48:09,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-18 23:48:09,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:09,848 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:09,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 23:48:09,848 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:09,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:09,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1211954559, now seen corresponding path program 1 times [2024-11-18 23:48:09,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:09,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339029220] [2024-11-18 23:48:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:09,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-18 23:48:10,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:10,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339029220] [2024-11-18 23:48:10,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339029220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:10,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:10,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:48:10,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279784633] [2024-11-18 23:48:10,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:10,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:48:10,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:10,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:48:10,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:48:10,384 INFO L87 Difference]: Start difference. First operand 2760 states and 3922 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:48:10,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:10,978 INFO L93 Difference]: Finished difference Result 3712 states and 5323 transitions. [2024-11-18 23:48:10,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:48:10,979 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), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 332 [2024-11-18 23:48:10,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:10,992 INFO L225 Difference]: With dead ends: 3712 [2024-11-18 23:48:10,992 INFO L226 Difference]: Without dead ends: 2414 [2024-11-18 23:48:10,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:48:10,998 INFO L432 NwaCegarLoop]: 444 mSDtfsCounter, 367 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:10,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 689 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:48:11,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2024-11-18 23:48:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2398. [2024-11-18 23:48:11,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 1809 states have (on average 1.2962962962962963) internal successors, (2345), 1823 states have internal predecessors, (2345), 518 states have call successors, (518), 70 states have call predecessors, (518), 70 states have return successors, (518), 504 states have call predecessors, (518), 518 states have call successors, (518) [2024-11-18 23:48:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3381 transitions. [2024-11-18 23:48:11,319 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3381 transitions. Word has length 332 [2024-11-18 23:48:11,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:11,320 INFO L471 AbstractCegarLoop]: Abstraction has 2398 states and 3381 transitions. [2024-11-18 23:48:11,320 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), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:48:11,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3381 transitions. [2024-11-18 23:48:11,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-18 23:48:11,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:11,324 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:11,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 23:48:11,324 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:11,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:11,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1658713339, now seen corresponding path program 1 times [2024-11-18 23:48:11,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:11,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449629033] [2024-11-18 23:48:11,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:11,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 21 proven. 126 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2024-11-18 23:48:12,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:12,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449629033] [2024-11-18 23:48:12,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449629033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:48:12,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921275908] [2024-11-18 23:48:12,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:12,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:48:12,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:48:12,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:48:12,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 23:48:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:12,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 23:48:12,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:48:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2747 proven. 126 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2024-11-18 23:48:12,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:48:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 21 proven. 126 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2024-11-18 23:48:13,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921275908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:48:13,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:48:13,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-18 23:48:13,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326261169] [2024-11-18 23:48:13,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:48:13,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 23:48:13,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 23:48:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:48:13,086 INFO L87 Difference]: Start difference. First operand 2398 states and 3381 transitions. Second operand has 11 states, 11 states have (on average 14.545454545454545) internal successors, (160), 11 states have internal predecessors, (160), 6 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (135), 6 states have call predecessors, (135), 6 states have call successors, (135) [2024-11-18 23:48:13,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:13,638 INFO L93 Difference]: Finished difference Result 3444 states and 4834 transitions. [2024-11-18 23:48:13,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 23:48:13,639 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.545454545454545) internal successors, (160), 11 states have internal predecessors, (160), 6 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (135), 6 states have call predecessors, (135), 6 states have call successors, (135) Word has length 332 [2024-11-18 23:48:13,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:13,653 INFO L225 Difference]: With dead ends: 3444 [2024-11-18 23:48:13,653 INFO L226 Difference]: Without dead ends: 2270 [2024-11-18 23:48:13,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 659 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2024-11-18 23:48:13,659 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 512 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:13,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 487 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:48:13,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2024-11-18 23:48:13,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2216. [2024-11-18 23:48:13,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 1676 states have (on average 1.279832935560859) internal successors, (2145), 1689 states have internal predecessors, (2145), 455 states have call successors, (455), 84 states have call predecessors, (455), 84 states have return successors, (455), 442 states have call predecessors, (455), 455 states have call successors, (455) [2024-11-18 23:48:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3055 transitions. [2024-11-18 23:48:13,983 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3055 transitions. Word has length 332 [2024-11-18 23:48:13,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:13,983 INFO L471 AbstractCegarLoop]: Abstraction has 2216 states and 3055 transitions. [2024-11-18 23:48:13,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.545454545454545) internal successors, (160), 11 states have internal predecessors, (160), 6 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (135), 6 states have call predecessors, (135), 6 states have call successors, (135) [2024-11-18 23:48:13,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3055 transitions. [2024-11-18 23:48:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-18 23:48:13,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:13,988 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:14,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 23:48:14,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:48:14,189 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:14,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:14,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1337549613, now seen corresponding path program 1 times [2024-11-18 23:48:14,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:14,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488408624] [2024-11-18 23:48:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:14,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:48:14,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474897010] [2024-11-18 23:48:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:14,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:48:14,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:48:14,843 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:48:14,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 23:48:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:15,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 23:48:15,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:48:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1947 proven. 108 refuted. 0 times theorem prover too weak. 2845 trivial. 0 not checked. [2024-11-18 23:48:16,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:48:16,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488408624] [2024-11-18 23:48:16,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 23:48:16,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474897010] [2024-11-18 23:48:16,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474897010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:48:16,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:48:16,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-11-18 23:48:16,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96299727] [2024-11-18 23:48:16,419 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 23:48:16,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 23:48:16,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:16,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 23:48:16,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:48:16,420 INFO L87 Difference]: Start difference. First operand 2216 states and 3055 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:48:17,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:17,120 INFO L93 Difference]: Finished difference Result 4459 states and 6131 transitions. [2024-11-18 23:48:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 23:48:17,121 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), 2 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 332 [2024-11-18 23:48:17,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:17,134 INFO L225 Difference]: With dead ends: 4459 [2024-11-18 23:48:17,135 INFO L226 Difference]: Without dead ends: 2246 [2024-11-18 23:48:17,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:48:17,141 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 318 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:17,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 825 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:48:17,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2024-11-18 23:48:17,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2232. [2024-11-18 23:48:17,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 1688 states have (on average 1.2731042654028435) internal successors, (2149), 1701 states have internal predecessors, (2149), 455 states have call successors, (455), 88 states have call predecessors, (455), 88 states have return successors, (455), 442 states have call predecessors, (455), 455 states have call successors, (455) [2024-11-18 23:48:17,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 3059 transitions. [2024-11-18 23:48:17,484 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 3059 transitions. Word has length 332 [2024-11-18 23:48:17,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:17,485 INFO L471 AbstractCegarLoop]: Abstraction has 2232 states and 3059 transitions. [2024-11-18 23:48:17,485 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), 2 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:48:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 3059 transitions. [2024-11-18 23:48:17,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-18 23:48:17,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:17,488 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:17,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 23:48:17,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 23:48:17,689 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:17,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:17,690 INFO L85 PathProgramCache]: Analyzing trace with hash -467888721, now seen corresponding path program 1 times [2024-11-18 23:48:17,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:17,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546490327] [2024-11-18 23:48:17,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:17,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:48:18,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370229262] [2024-11-18 23:48:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:18,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:48:18,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:48:18,097 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:48:18,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 23:48:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:18,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-18 23:48:18,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:48:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2852 proven. 491 refuted. 0 times theorem prover too weak. 1557 trivial. 0 not checked. [2024-11-18 23:48:20,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:48:43,073 WARN L286 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 4 DAG size of output: 1 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)