./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-78.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-78.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 ce36ae11817d8408b28b87366201df9141e6e75d787dae6b6223431c24a32438 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:44:41,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:44:41,825 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:44:41,831 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:44:41,832 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:44:41,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:44:41,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:44:41,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:44:41,860 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:44:41,861 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:44:41,862 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:44:41,862 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:44:41,863 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:44:41,864 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:44:41,864 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:44:41,865 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:44:41,865 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:44:41,865 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:44:41,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:44:41,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:44:41,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:44:41,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:44:41,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:44:41,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:44:41,869 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:44:41,869 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:44:41,869 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:44:41,869 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:44:41,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:44:41,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:44:41,870 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:44:41,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:44:41,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:44:41,871 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:44:41,871 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:44:41,871 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:44:41,871 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:44:41,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:44:41,871 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:44:41,872 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:44:41,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:44:41,873 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:44:41,874 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce36ae11817d8408b28b87366201df9141e6e75d787dae6b6223431c24a32438 [2024-11-22 11:44:42,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:44:42,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:44:42,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:44:42,120 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:44:42,120 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:44:42,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-78.i [2024-11-22 11:44:43,375 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:44:43,563 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:44:43,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-78.i [2024-11-22 11:44:43,575 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e000eed/3a5481b197044d76a318ae9089ba40be/FLAG91e7288b1 [2024-11-22 11:44:43,586 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e000eed/3a5481b197044d76a318ae9089ba40be [2024-11-22 11:44:43,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:44:43,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:44:43,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:44:43,590 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:44:43,595 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:44:43,596 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:44:43" (1/1) ... [2024-11-22 11:44:43,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@331c4088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:43, skipping insertion in model container [2024-11-22 11:44:43,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:44:43" (1/1) ... [2024-11-22 11:44:43,641 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:44:43,823 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-78.i[916,929] [2024-11-22 11:44:43,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:44:43,952 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:44:43,963 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-78.i[916,929] [2024-11-22 11:44:44,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:44:44,045 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:44:44,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:44 WrapperNode [2024-11-22 11:44:44,046 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:44:44,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:44:44,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:44:44,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:44:44,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:44" (1/1) ... [2024-11-22 11:44:44,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:44" (1/1) ... [2024-11-22 11:44:44,126 INFO L138 Inliner]: procedures = 26, calls = 69, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 479 [2024-11-22 11:44:44,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:44:44,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:44:44,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:44:44,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:44:44,136 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:44" (1/1) ... [2024-11-22 11:44:44,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:44" (1/1) ... [2024-11-22 11:44:44,147 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:44" (1/1) ... [2024-11-22 11:44:44,178 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]. [2024-11-22 11:44:44,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:44" (1/1) ... [2024-11-22 11:44:44,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:44" (1/1) ... [2024-11-22 11:44:44,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:44" (1/1) ... [2024-11-22 11:44:44,210 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:44" (1/1) ... [2024-11-22 11:44:44,220 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:44" (1/1) ... [2024-11-22 11:44:44,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:44" (1/1) ... [2024-11-22 11:44:44,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:44:44,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:44:44,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:44:44,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:44:44,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:44" (1/1) ... [2024-11-22 11:44:44,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:44:44,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:44,265 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) [2024-11-22 11:44:44,267 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 [2024-11-22 11:44:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:44:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:44:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:44:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:44:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:44:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:44:44,393 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:44:44,394 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:44:45,172 INFO L? ?]: Removed 46 outVars from TransFormulas that were not future-live. [2024-11-22 11:44:45,172 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:44:45,191 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:44:45,192 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:44:45,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:44:45 BoogieIcfgContainer [2024-11-22 11:44:45,193 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:44:45,195 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:44:45,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:44:45,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:44:45,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:44:43" (1/3) ... [2024-11-22 11:44:45,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0d7417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:44:45, skipping insertion in model container [2024-11-22 11:44:45,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:44:44" (2/3) ... [2024-11-22 11:44:45,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0d7417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:44:45, skipping insertion in model container [2024-11-22 11:44:45,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:44:45" (3/3) ... [2024-11-22 11:44:45,200 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-78.i [2024-11-22 11:44:45,213 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:44:45,214 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:44:45,274 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:44:45,279 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;@4fd79c00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:44:45,280 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:44:45,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 143 states have (on average 1.5174825174825175) internal successors, (217), 144 states have internal predecessors, (217), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-22 11:44:45,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-22 11:44:45,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:45,302 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:45,303 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:45,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash 762461382, now seen corresponding path program 1 times [2024-11-22 11:44:45,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:45,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579543939] [2024-11-22 11:44:45,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:45,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:45,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2024-11-22 11:44:45,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:45,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579543939] [2024-11-22 11:44:45,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579543939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:44:45,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357722105] [2024-11-22 11:44:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:45,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:45,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:45,757 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) [2024-11-22 11:44:45,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 11:44:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:45,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:44:45,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:44:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2024-11-22 11:44:46,028 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:44:46,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357722105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:46,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:44:46,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:44:46,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334436212] [2024-11-22 11:44:46,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:46,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:44:46,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:46,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:44:46,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:44:46,057 INFO L87 Difference]: Start difference. First operand has 202 states, 143 states have (on average 1.5174825174825175) internal successors, (217), 144 states have internal predecessors, (217), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-22 11:44:46,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:46,099 INFO L93 Difference]: Finished difference Result 397 states and 708 transitions. [2024-11-22 11:44:46,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:44:46,102 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) Word has length 365 [2024-11-22 11:44:46,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:46,109 INFO L225 Difference]: With dead ends: 397 [2024-11-22 11:44:46,109 INFO L226 Difference]: Without dead ends: 198 [2024-11-22 11:44:46,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:44:46,117 INFO L432 NwaCegarLoop]: 322 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, 322 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 [2024-11-22 11:44:46,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:44:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-22 11:44:46,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2024-11-22 11:44:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 140 states have (on average 1.5) internal successors, (210), 140 states have internal predecessors, (210), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-22 11:44:46,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 322 transitions. [2024-11-22 11:44:46,169 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 322 transitions. Word has length 365 [2024-11-22 11:44:46,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:46,169 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 322 transitions. [2024-11-22 11:44:46,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-22 11:44:46,170 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 322 transitions. [2024-11-22 11:44:46,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-22 11:44:46,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:46,175 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:46,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 11:44:46,376 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 [2024-11-22 11:44:46,377 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:46,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash -66166458, now seen corresponding path program 1 times [2024-11-22 11:44:46,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:46,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573613723] [2024-11-22 11:44:46,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:46,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2024-11-22 11:44:46,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:46,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573613723] [2024-11-22 11:44:46,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573613723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:46,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:46,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:44:46,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760449908] [2024-11-22 11:44:46,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:46,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:44:46,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:46,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:44:46,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:44:46,733 INFO L87 Difference]: Start difference. First operand 198 states and 322 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-22 11:44:46,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:46,860 INFO L93 Difference]: Finished difference Result 585 states and 954 transitions. [2024-11-22 11:44:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:44:46,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 365 [2024-11-22 11:44:46,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:46,867 INFO L225 Difference]: With dead ends: 585 [2024-11-22 11:44:46,870 INFO L226 Difference]: Without dead ends: 390 [2024-11-22 11:44:46,871 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 [2024-11-22 11:44:46,872 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 297 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:46,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 643 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:44:46,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-22 11:44:46,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 386. [2024-11-22 11:44:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 271 states have (on average 1.4612546125461254) internal successors, (396), 271 states have internal predecessors, (396), 112 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-22 11:44:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 620 transitions. [2024-11-22 11:44:46,925 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 620 transitions. Word has length 365 [2024-11-22 11:44:46,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:46,929 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 620 transitions. [2024-11-22 11:44:46,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-22 11:44:46,930 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 620 transitions. [2024-11-22 11:44:46,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-22 11:44:46,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:46,934 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:46,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:44:46,934 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:46,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:46,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1809895298, now seen corresponding path program 1 times [2024-11-22 11:44:46,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:46,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146193501] [2024-11-22 11:44:46,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:46,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2024-11-22 11:44:47,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:47,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146193501] [2024-11-22 11:44:47,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146193501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:47,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:47,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:44:47,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440064645] [2024-11-22 11:44:47,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:47,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:44:47,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:47,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:44:47,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:44:47,137 INFO L87 Difference]: Start difference. First operand 386 states and 620 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-22 11:44:47,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:47,223 INFO L93 Difference]: Finished difference Result 779 states and 1253 transitions. [2024-11-22 11:44:47,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:44:47,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 366 [2024-11-22 11:44:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:47,228 INFO L225 Difference]: With dead ends: 779 [2024-11-22 11:44:47,228 INFO L226 Difference]: Without dead ends: 396 [2024-11-22 11:44:47,229 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 [2024-11-22 11:44:47,230 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 281 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:47,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 770 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:44:47,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-22 11:44:47,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 392. [2024-11-22 11:44:47,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 277 states have (on average 1.44043321299639) internal successors, (399), 277 states have internal predecessors, (399), 112 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-22 11:44:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 623 transitions. [2024-11-22 11:44:47,272 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 623 transitions. Word has length 366 [2024-11-22 11:44:47,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:47,274 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 623 transitions. [2024-11-22 11:44:47,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-22 11:44:47,274 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 623 transitions. [2024-11-22 11:44:47,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-22 11:44:47,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:47,278 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:47,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:44:47,279 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:47,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:47,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1667423548, now seen corresponding path program 1 times [2024-11-22 11:44:47,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:47,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900340968] [2024-11-22 11:44:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:47,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2024-11-22 11:44:48,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:48,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900340968] [2024-11-22 11:44:48,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900340968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:48,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:48,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 11:44:48,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282159841] [2024-11-22 11:44:48,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:48,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:44:48,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:48,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:44:48,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:44:48,355 INFO L87 Difference]: Start difference. First operand 392 states and 623 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-22 11:44:49,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:49,049 INFO L93 Difference]: Finished difference Result 1422 states and 2257 transitions. [2024-11-22 11:44:49,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 11:44:49,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 366 [2024-11-22 11:44:49,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:49,056 INFO L225 Difference]: With dead ends: 1422 [2024-11-22 11:44:49,056 INFO L226 Difference]: Without dead ends: 1033 [2024-11-22 11:44:49,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:44:49,059 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 803 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:49,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1788 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 11:44:49,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2024-11-22 11:44:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 771. [2024-11-22 11:44:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 550 states have (on average 1.4363636363636363) internal successors, (790), 551 states have internal predecessors, (790), 216 states have call successors, (216), 4 states have call predecessors, (216), 4 states have return successors, (216), 215 states have call predecessors, (216), 216 states have call successors, (216) [2024-11-22 11:44:49,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1222 transitions. [2024-11-22 11:44:49,120 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1222 transitions. Word has length 366 [2024-11-22 11:44:49,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:49,121 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 1222 transitions. [2024-11-22 11:44:49,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-22 11:44:49,122 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1222 transitions. [2024-11-22 11:44:49,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-11-22 11:44:49,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:49,124 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:49,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 11:44:49,124 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:49,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:49,125 INFO L85 PathProgramCache]: Analyzing trace with hash -242125332, now seen corresponding path program 1 times [2024-11-22 11:44:49,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:49,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263075567] [2024-11-22 11:44:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:49,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2024-11-22 11:44:49,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:49,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263075567] [2024-11-22 11:44:49,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263075567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:49,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:49,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:44:49,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451107478] [2024-11-22 11:44:49,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:49,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:44:49,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:49,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:44:49,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:44:49,832 INFO L87 Difference]: Start difference. First operand 771 states and 1222 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-22 11:44:50,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:50,232 INFO L93 Difference]: Finished difference Result 2835 states and 4486 transitions. [2024-11-22 11:44:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:44:50,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 367 [2024-11-22 11:44:50,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:50,245 INFO L225 Difference]: With dead ends: 2835 [2024-11-22 11:44:50,246 INFO L226 Difference]: Without dead ends: 2067 [2024-11-22 11:44:50,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:44:50,251 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 667 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:50,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 919 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:44:50,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2024-11-22 11:44:50,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 1619. [2024-11-22 11:44:50,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1234 states have (on average 1.46677471636953) internal successors, (1810), 1239 states have internal predecessors, (1810), 376 states have call successors, (376), 8 states have call predecessors, (376), 8 states have return successors, (376), 371 states have call predecessors, (376), 376 states have call successors, (376) [2024-11-22 11:44:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2562 transitions. [2024-11-22 11:44:50,398 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2562 transitions. Word has length 367 [2024-11-22 11:44:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:50,400 INFO L471 AbstractCegarLoop]: Abstraction has 1619 states and 2562 transitions. [2024-11-22 11:44:50,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-22 11:44:50,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2562 transitions. [2024-11-22 11:44:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-11-22 11:44:50,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:50,405 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:50,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 11:44:50,405 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:50,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:50,406 INFO L85 PathProgramCache]: Analyzing trace with hash -723205590, now seen corresponding path program 1 times [2024-11-22 11:44:50,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:50,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661602978] [2024-11-22 11:44:50,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:50,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2024-11-22 11:44:50,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:50,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661602978] [2024-11-22 11:44:50,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661602978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:50,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:50,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:44:50,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505243752] [2024-11-22 11:44:50,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:50,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:44:50,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:50,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:44:50,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:44:50,768 INFO L87 Difference]: Start difference. First operand 1619 states and 2562 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-22 11:44:50,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:50,909 INFO L93 Difference]: Finished difference Result 4067 states and 6443 transitions. [2024-11-22 11:44:50,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:44:50,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 367 [2024-11-22 11:44:50,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:50,923 INFO L225 Difference]: With dead ends: 4067 [2024-11-22 11:44:50,923 INFO L226 Difference]: Without dead ends: 2451 [2024-11-22 11:44:50,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:44:50,929 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 214 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:50,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 779 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:44:50,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2024-11-22 11:44:51,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2449. [2024-11-22 11:44:51,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2449 states, 1803 states have (on average 1.442595673876872) internal successors, (2601), 1810 states have internal predecessors, (2601), 632 states have call successors, (632), 13 states have call predecessors, (632), 13 states have return successors, (632), 625 states have call predecessors, (632), 632 states have call successors, (632) [2024-11-22 11:44:51,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 3865 transitions. [2024-11-22 11:44:51,118 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 3865 transitions. Word has length 367 [2024-11-22 11:44:51,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:51,119 INFO L471 AbstractCegarLoop]: Abstraction has 2449 states and 3865 transitions. [2024-11-22 11:44:51,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-22 11:44:51,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 3865 transitions. [2024-11-22 11:44:51,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2024-11-22 11:44:51,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:51,123 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:51,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 11:44:51,123 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:51,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:51,123 INFO L85 PathProgramCache]: Analyzing trace with hash -927492285, now seen corresponding path program 1 times [2024-11-22 11:44:51,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:51,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347612246] [2024-11-22 11:44:51,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:51,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2024-11-22 11:44:51,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:51,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347612246] [2024-11-22 11:44:51,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347612246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:44:51,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:44:51,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:44:51,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559845876] [2024-11-22 11:44:51,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:44:51,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:44:51,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:51,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:44:51,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:44:51,420 INFO L87 Difference]: Start difference. First operand 2449 states and 3865 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-22 11:44:51,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:51,734 INFO L93 Difference]: Finished difference Result 6263 states and 9885 transitions. [2024-11-22 11:44:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:44:51,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 368 [2024-11-22 11:44:51,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:51,755 INFO L225 Difference]: With dead ends: 6263 [2024-11-22 11:44:51,756 INFO L226 Difference]: Without dead ends: 3885 [2024-11-22 11:44:51,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:44:51,765 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 196 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:51,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 733 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:44:51,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2024-11-22 11:44:52,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3883. [2024-11-22 11:44:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3883 states, 2853 states have (on average 1.4332281808622502) internal successors, (4089), 2865 states have internal predecessors, (4089), 1008 states have call successors, (1008), 21 states have call predecessors, (1008), 21 states have return successors, (1008), 996 states have call predecessors, (1008), 1008 states have call successors, (1008) [2024-11-22 11:44:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 6105 transitions. [2024-11-22 11:44:52,116 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 6105 transitions. Word has length 368 [2024-11-22 11:44:52,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:52,117 INFO L471 AbstractCegarLoop]: Abstraction has 3883 states and 6105 transitions. [2024-11-22 11:44:52,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-22 11:44:52,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 6105 transitions. [2024-11-22 11:44:52,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2024-11-22 11:44:52,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:52,121 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:52,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 11:44:52,122 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:52,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:52,123 INFO L85 PathProgramCache]: Analyzing trace with hash 135217386, now seen corresponding path program 1 times [2024-11-22 11:44:52,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:52,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714616049] [2024-11-22 11:44:52,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:52,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2024-11-22 11:44:53,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:53,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714616049] [2024-11-22 11:44:53,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714616049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:44:53,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885250250] [2024-11-22 11:44:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:53,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:53,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:53,179 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) [2024-11-22 11:44:53,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 11:44:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:53,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 11:44:53,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:44:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 1329 proven. 18 refuted. 0 times theorem prover too weak. 4813 trivial. 0 not checked. [2024-11-22 11:44:53,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:44:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 147 proven. 18 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2024-11-22 11:44:53,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885250250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:44:53,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:44:53,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2024-11-22 11:44:53,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802037659] [2024-11-22 11:44:53,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:44:53,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 11:44:53,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:53,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 11:44:53,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-22 11:44:53,834 INFO L87 Difference]: Start difference. First operand 3883 states and 6105 transitions. Second operand has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) [2024-11-22 11:44:55,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:44:55,447 INFO L93 Difference]: Finished difference Result 8134 states and 12711 transitions. [2024-11-22 11:44:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 11:44:55,448 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) Word has length 368 [2024-11-22 11:44:55,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:44:55,474 INFO L225 Difference]: With dead ends: 8134 [2024-11-22 11:44:55,474 INFO L226 Difference]: Without dead ends: 4208 [2024-11-22 11:44:55,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 737 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2024-11-22 11:44:55,489 INFO L432 NwaCegarLoop]: 363 mSDtfsCounter, 847 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:44:55,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1845 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 11:44:55,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4208 states. [2024-11-22 11:44:55,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4208 to 3421. [2024-11-22 11:44:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3421 states, 2595 states have (on average 1.4354527938342967) internal successors, (3725), 2602 states have internal predecessors, (3725), 784 states have call successors, (784), 41 states have call predecessors, (784), 41 states have return successors, (784), 777 states have call predecessors, (784), 784 states have call successors, (784) [2024-11-22 11:44:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 5293 transitions. [2024-11-22 11:44:55,827 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 5293 transitions. Word has length 368 [2024-11-22 11:44:55,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:44:55,828 INFO L471 AbstractCegarLoop]: Abstraction has 3421 states and 5293 transitions. [2024-11-22 11:44:55,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) [2024-11-22 11:44:55,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 5293 transitions. [2024-11-22 11:44:55,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-22 11:44:55,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:44:55,831 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:44:55,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 11:44:56,036 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,SelfDestructingSolverStorable7 [2024-11-22 11:44:56,037 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:44:56,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:44:56,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1653746121, now seen corresponding path program 1 times [2024-11-22 11:44:56,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:44:56,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078609134] [2024-11-22 11:44:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:56,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:44:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 45 proven. 279 refuted. 0 times theorem prover too weak. 5836 trivial. 0 not checked. [2024-11-22 11:44:57,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:44:57,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078609134] [2024-11-22 11:44:57,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078609134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:44:57,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798021965] [2024-11-22 11:44:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:44:57,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:44:57,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:44:57,248 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) [2024-11-22 11:44:57,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 11:44:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:44:57,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 11:44:57,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:44:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2905 proven. 267 refuted. 0 times theorem prover too weak. 2988 trivial. 0 not checked. [2024-11-22 11:44:59,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:44:59,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798021965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:44:59,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 11:44:59,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 18 [2024-11-22 11:44:59,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136448861] [2024-11-22 11:44:59,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 11:44:59,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 11:44:59,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:44:59,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 11:44:59,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-11-22 11:44:59,578 INFO L87 Difference]: Start difference. First operand 3421 states and 5293 transitions. Second operand has 18 states, 17 states have (on average 10.117647058823529) internal successors, (172), 18 states have internal predecessors, (172), 7 states have call successors, (109), 4 states have call predecessors, (109), 6 states have return successors, (109), 6 states have call predecessors, (109), 7 states have call successors, (109) [2024-11-22 11:45:03,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:03,800 INFO L93 Difference]: Finished difference Result 12480 states and 18554 transitions. [2024-11-22 11:45:03,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-22 11:45:03,801 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 10.117647058823529) internal successors, (172), 18 states have internal predecessors, (172), 7 states have call successors, (109), 4 states have call predecessors, (109), 6 states have return successors, (109), 6 states have call predecessors, (109), 7 states have call successors, (109) Word has length 369 [2024-11-22 11:45:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:03,841 INFO L225 Difference]: With dead ends: 12480 [2024-11-22 11:45:03,841 INFO L226 Difference]: Without dead ends: 9134 [2024-11-22 11:45:03,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1723 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1195, Invalid=5125, Unknown=0, NotChecked=0, Total=6320 [2024-11-22 11:45:03,851 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 2668 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 2477 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2669 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 2477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:03,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2669 Valid, 1873 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 2477 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-22 11:45:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9134 states. [2024-11-22 11:45:04,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9134 to 5948. [2024-11-22 11:45:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 4965 states have (on average 1.4300100704934542) internal successors, (7100), 4987 states have internal predecessors, (7100), 814 states have call successors, (814), 168 states have call predecessors, (814), 168 states have return successors, (814), 792 states have call predecessors, (814), 814 states have call successors, (814) [2024-11-22 11:45:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 8728 transitions. [2024-11-22 11:45:04,260 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 8728 transitions. Word has length 369 [2024-11-22 11:45:04,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:04,263 INFO L471 AbstractCegarLoop]: Abstraction has 5948 states and 8728 transitions. [2024-11-22 11:45:04,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 10.117647058823529) internal successors, (172), 18 states have internal predecessors, (172), 7 states have call successors, (109), 4 states have call predecessors, (109), 6 states have return successors, (109), 6 states have call predecessors, (109), 7 states have call successors, (109) [2024-11-22 11:45:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 8728 transitions. [2024-11-22 11:45:04,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2024-11-22 11:45:04,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:04,266 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:45:04,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 11:45:04,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:45:04,471 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:04,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:04,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2083951521, now seen corresponding path program 1 times [2024-11-22 11:45:04,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:04,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106121844] [2024-11-22 11:45:04,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:04,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:05,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 6 proven. 159 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2024-11-22 11:45:05,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:05,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106121844] [2024-11-22 11:45:05,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106121844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:45:05,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560671463] [2024-11-22 11:45:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:05,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:45:05,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:45:05,414 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) [2024-11-22 11:45:05,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 11:45:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:05,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 11:45:05,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:45:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2406 proven. 540 refuted. 0 times theorem prover too weak. 3214 trivial. 0 not checked. [2024-11-22 11:45:08,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:45:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 84 proven. 243 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2024-11-22 11:45:09,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560671463] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:45:09,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:45:09,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18, 12] total 33 [2024-11-22 11:45:09,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188443440] [2024-11-22 11:45:09,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:45:09,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-22 11:45:09,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:10,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-22 11:45:10,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=821, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 11:45:10,003 INFO L87 Difference]: Start difference. First operand 5948 states and 8728 transitions. Second operand has 33 states, 32 states have (on average 7.875) internal successors, (252), 31 states have internal predecessors, (252), 11 states have call successors, (162), 6 states have call predecessors, (162), 10 states have return successors, (163), 11 states have call predecessors, (163), 11 states have call successors, (163) [2024-11-22 11:45:16,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:16,651 INFO L93 Difference]: Finished difference Result 27239 states and 39425 transitions. [2024-11-22 11:45:16,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-11-22 11:45:16,652 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 7.875) internal successors, (252), 31 states have internal predecessors, (252), 11 states have call successors, (162), 6 states have call predecessors, (162), 10 states have return successors, (163), 11 states have call predecessors, (163), 11 states have call successors, (163) Word has length 370 [2024-11-22 11:45:16,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:16,763 INFO L225 Difference]: With dead ends: 27239 [2024-11-22 11:45:16,764 INFO L226 Difference]: Without dead ends: 21394 [2024-11-22 11:45:16,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 734 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5954 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3667, Invalid=13625, Unknown=0, NotChecked=0, Total=17292 [2024-11-22 11:45:16,782 INFO L432 NwaCegarLoop]: 372 mSDtfsCounter, 3381 mSDsluCounter, 3302 mSDsCounter, 0 mSdLazyCounter, 3865 mSolverCounterSat, 578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3383 SdHoareTripleChecker+Valid, 3674 SdHoareTripleChecker+Invalid, 4443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 3865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:16,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3383 Valid, 3674 Invalid, 4443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 3865 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-22 11:45:16,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21394 states. [2024-11-22 11:45:17,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21394 to 10549. [2024-11-22 11:45:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10549 states, 8616 states have (on average 1.4179433611884866) internal successors, (12217), 8653 states have internal predecessors, (12217), 1558 states have call successors, (1558), 374 states have call predecessors, (1558), 374 states have return successors, (1558), 1521 states have call predecessors, (1558), 1558 states have call successors, (1558) [2024-11-22 11:45:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10549 states to 10549 states and 15333 transitions. [2024-11-22 11:45:17,984 INFO L78 Accepts]: Start accepts. Automaton has 10549 states and 15333 transitions. Word has length 370 [2024-11-22 11:45:17,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:17,984 INFO L471 AbstractCegarLoop]: Abstraction has 10549 states and 15333 transitions. [2024-11-22 11:45:17,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 7.875) internal successors, (252), 31 states have internal predecessors, (252), 11 states have call successors, (162), 6 states have call predecessors, (162), 10 states have return successors, (163), 11 states have call predecessors, (163), 11 states have call successors, (163) [2024-11-22 11:45:17,985 INFO L276 IsEmpty]: Start isEmpty. Operand 10549 states and 15333 transitions. [2024-11-22 11:45:17,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2024-11-22 11:45:17,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:17,990 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:45:17,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 11:45:18,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:45:18,191 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:18,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:18,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1543035803, now seen corresponding path program 1 times [2024-11-22 11:45:18,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:18,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111034189] [2024-11-22 11:45:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:18,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:19,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 45 proven. 279 refuted. 0 times theorem prover too weak. 5836 trivial. 0 not checked. [2024-11-22 11:45:19,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:19,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111034189] [2024-11-22 11:45:19,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111034189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:45:19,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166729944] [2024-11-22 11:45:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:19,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:45:19,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:45:19,487 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) [2024-11-22 11:45:19,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 11:45:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:19,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-22 11:45:19,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:45:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 1934 proven. 1029 refuted. 0 times theorem prover too weak. 3197 trivial. 0 not checked. [2024-11-22 11:45:22,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:45:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 105 proven. 381 refuted. 0 times theorem prover too weak. 5674 trivial. 0 not checked. [2024-11-22 11:45:24,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166729944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:45:24,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:45:24,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 26, 17] total 51 [2024-11-22 11:45:24,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024981227] [2024-11-22 11:45:24,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:45:24,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-22 11:45:24,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:24,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-22 11:45:24,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=2204, Unknown=0, NotChecked=0, Total=2550 [2024-11-22 11:45:24,609 INFO L87 Difference]: Start difference. First operand 10549 states and 15333 transitions. Second operand has 51 states, 49 states have (on average 5.448979591836735) internal successors, (267), 48 states have internal predecessors, (267), 13 states have call successors, (163), 7 states have call predecessors, (163), 13 states have return successors, (165), 12 states have call predecessors, (165), 13 states have call successors, (165) [2024-11-22 11:45:47,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:47,765 INFO L93 Difference]: Finished difference Result 47491 states and 68029 transitions. [2024-11-22 11:45:47,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 321 states. [2024-11-22 11:45:47,766 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 49 states have (on average 5.448979591836735) internal successors, (267), 48 states have internal predecessors, (267), 13 states have call successors, (163), 7 states have call predecessors, (163), 13 states have return successors, (165), 12 states have call predecessors, (165), 13 states have call successors, (165) Word has length 370 [2024-11-22 11:45:47,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:47,843 INFO L225 Difference]: With dead ends: 47491 [2024-11-22 11:45:47,843 INFO L226 Difference]: Without dead ends: 37053 [2024-11-22 11:45:47,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1107 GetRequests, 739 SyntacticMatches, 0 SemanticMatches, 368 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54491 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=16992, Invalid=119538, Unknown=0, NotChecked=0, Total=136530 [2024-11-22 11:45:47,878 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 9760 mSDsluCounter, 5866 mSDsCounter, 0 mSdLazyCounter, 8281 mSolverCounterSat, 1581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9760 SdHoareTripleChecker+Valid, 6233 SdHoareTripleChecker+Invalid, 9862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1581 IncrementalHoareTripleChecker+Valid, 8281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:47,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9760 Valid, 6233 Invalid, 9862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1581 Valid, 8281 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-22 11:45:47,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37053 states. [2024-11-22 11:45:49,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37053 to 10296. [2024-11-22 11:45:49,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10296 states, 9020 states have (on average 1.4828159645232817) internal successors, (13375), 9029 states have internal predecessors, (13375), 1032 states have call successors, (1032), 243 states have call predecessors, (1032), 243 states have return successors, (1032), 1023 states have call predecessors, (1032), 1032 states have call successors, (1032) [2024-11-22 11:45:49,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10296 states to 10296 states and 15439 transitions. [2024-11-22 11:45:49,075 INFO L78 Accepts]: Start accepts. Automaton has 10296 states and 15439 transitions. Word has length 370 [2024-11-22 11:45:49,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:49,076 INFO L471 AbstractCegarLoop]: Abstraction has 10296 states and 15439 transitions. [2024-11-22 11:45:49,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 49 states have (on average 5.448979591836735) internal successors, (267), 48 states have internal predecessors, (267), 13 states have call successors, (163), 7 states have call predecessors, (163), 13 states have return successors, (165), 12 states have call predecessors, (165), 13 states have call successors, (165) [2024-11-22 11:45:49,077 INFO L276 IsEmpty]: Start isEmpty. Operand 10296 states and 15439 transitions. [2024-11-22 11:45:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2024-11-22 11:45:49,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:49,081 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:45:49,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 11:45:49,281 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,SelfDestructingSolverStorable10 [2024-11-22 11:45:49,282 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:49,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1730863139, now seen corresponding path program 1 times [2024-11-22 11:45:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:49,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583653783] [2024-11-22 11:45:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:49,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 81 proven. 243 refuted. 0 times theorem prover too weak. 5836 trivial. 0 not checked. [2024-11-22 11:45:50,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:50,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583653783] [2024-11-22 11:45:50,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583653783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:45:50,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372250417] [2024-11-22 11:45:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:50,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:45:50,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:45:50,523 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) [2024-11-22 11:45:50,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 11:45:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:50,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 11:45:50,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:45:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2434 proven. 516 refuted. 0 times theorem prover too weak. 3210 trivial. 0 not checked. [2024-11-22 11:45:52,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:45:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 108 proven. 378 refuted. 0 times theorem prover too weak. 5674 trivial. 0 not checked. [2024-11-22 11:45:53,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372250417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:45:53,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:45:53,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 13] total 31 [2024-11-22 11:45:53,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244038301] [2024-11-22 11:45:53,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:45:53,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-22 11:45:53,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:53,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-22 11:45:53,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2024-11-22 11:45:53,107 INFO L87 Difference]: Start difference. First operand 10296 states and 15439 transitions. Second operand has 31 states, 29 states have (on average 8.793103448275861) internal successors, (255), 29 states have internal predecessors, (255), 13 states have call successors, (161), 6 states have call predecessors, (161), 11 states have return successors, (163), 11 states have call predecessors, (163), 13 states have call successors, (163) [2024-11-22 11:45:55,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:55,619 INFO L93 Difference]: Finished difference Result 20530 states and 30623 transitions. [2024-11-22 11:45:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-22 11:45:55,620 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 8.793103448275861) internal successors, (255), 29 states have internal predecessors, (255), 13 states have call successors, (161), 6 states have call predecessors, (161), 11 states have return successors, (163), 11 states have call predecessors, (163), 13 states have call successors, (163) Word has length 370 [2024-11-22 11:45:55,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:55,666 INFO L225 Difference]: With dead ends: 20530 [2024-11-22 11:45:55,666 INFO L226 Difference]: Without dead ends: 10345 [2024-11-22 11:45:55,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1047, Invalid=2735, Unknown=0, NotChecked=0, Total=3782 [2024-11-22 11:45:55,683 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 1704 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:55,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 1210 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 11:45:55,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10345 states. [2024-11-22 11:45:56,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10345 to 7357. [2024-11-22 11:45:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7357 states, 6355 states have (on average 1.4154209284028325) internal successors, (8995), 6362 states have internal predecessors, (8995), 784 states have call successors, (784), 217 states have call predecessors, (784), 217 states have return successors, (784), 777 states have call predecessors, (784), 784 states have call successors, (784) [2024-11-22 11:45:56,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7357 states to 7357 states and 10563 transitions. [2024-11-22 11:45:56,397 INFO L78 Accepts]: Start accepts. Automaton has 7357 states and 10563 transitions. Word has length 370 [2024-11-22 11:45:56,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:56,398 INFO L471 AbstractCegarLoop]: Abstraction has 7357 states and 10563 transitions. [2024-11-22 11:45:56,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 8.793103448275861) internal successors, (255), 29 states have internal predecessors, (255), 13 states have call successors, (161), 6 states have call predecessors, (161), 11 states have return successors, (163), 11 states have call predecessors, (163), 13 states have call successors, (163) [2024-11-22 11:45:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 7357 states and 10563 transitions. [2024-11-22 11:45:56,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-11-22 11:45:56,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:56,402 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:45:56,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 11:45:56,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:45:56,603 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:56,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:56,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2076889683, now seen corresponding path program 1 times [2024-11-22 11:45:56,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:56,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549613382] [2024-11-22 11:45:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:56,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2024-11-22 11:45:57,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:57,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549613382] [2024-11-22 11:45:57,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549613382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:45:57,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:45:57,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:45:57,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766964705] [2024-11-22 11:45:57,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:45:57,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:45:57,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:57,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:45:57,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:45:57,007 INFO L87 Difference]: Start difference. First operand 7357 states and 10563 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-22 11:45:57,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:45:57,843 INFO L93 Difference]: Finished difference Result 16210 states and 23399 transitions. [2024-11-22 11:45:57,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 11:45:57,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 372 [2024-11-22 11:45:57,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:45:57,866 INFO L225 Difference]: With dead ends: 16210 [2024-11-22 11:45:57,866 INFO L226 Difference]: Without dead ends: 8972 [2024-11-22 11:45:57,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 11:45:57,878 INFO L432 NwaCegarLoop]: 442 mSDtfsCounter, 340 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:45:57,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1034 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:45:57,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8972 states. [2024-11-22 11:45:58,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8972 to 7376. [2024-11-22 11:45:58,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7376 states, 6374 states have (on average 1.4152808283652338) internal successors, (9021), 6381 states have internal predecessors, (9021), 784 states have call successors, (784), 217 states have call predecessors, (784), 217 states have return successors, (784), 777 states have call predecessors, (784), 784 states have call successors, (784) [2024-11-22 11:45:58,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7376 states to 7376 states and 10589 transitions. [2024-11-22 11:45:58,633 INFO L78 Accepts]: Start accepts. Automaton has 7376 states and 10589 transitions. Word has length 372 [2024-11-22 11:45:58,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:45:58,634 INFO L471 AbstractCegarLoop]: Abstraction has 7376 states and 10589 transitions. [2024-11-22 11:45:58,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-22 11:45:58,634 INFO L276 IsEmpty]: Start isEmpty. Operand 7376 states and 10589 transitions. [2024-11-22 11:45:58,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-11-22 11:45:58,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:45:58,638 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:45:58,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 11:45:58,638 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:45:58,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:45:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1736997355, now seen corresponding path program 1 times [2024-11-22 11:45:58,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:45:58,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422462163] [2024-11-22 11:45:58,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:45:58,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:45:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:45:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2024-11-22 11:45:58,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:45:58,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422462163] [2024-11-22 11:45:58,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422462163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:45:58,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:45:58,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 11:45:58,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85263686] [2024-11-22 11:45:58,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:45:58,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 11:45:58,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:45:58,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 11:45:58,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 11:45:58,908 INFO L87 Difference]: Start difference. First operand 7376 states and 10589 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-22 11:46:00,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:46:00,396 INFO L93 Difference]: Finished difference Result 17977 states and 25764 transitions. [2024-11-22 11:46:00,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:46:00,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 372 [2024-11-22 11:46:00,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:46:00,424 INFO L225 Difference]: With dead ends: 17977 [2024-11-22 11:46:00,424 INFO L226 Difference]: Without dead ends: 13144 [2024-11-22 11:46:00,434 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 [2024-11-22 11:46:00,434 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 324 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:46:00,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 897 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:46:00,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13144 states. [2024-11-22 11:46:01,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13144 to 13142. [2024-11-22 11:46:01,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13142 states, 11192 states have (on average 1.4040385989992852) internal successors, (15714), 11205 states have internal predecessors, (15714), 1528 states have call successors, (1528), 421 states have call predecessors, (1528), 421 states have return successors, (1528), 1515 states have call predecessors, (1528), 1528 states have call successors, (1528) [2024-11-22 11:46:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13142 states to 13142 states and 18770 transitions. [2024-11-22 11:46:01,847 INFO L78 Accepts]: Start accepts. Automaton has 13142 states and 18770 transitions. Word has length 372 [2024-11-22 11:46:01,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:46:01,847 INFO L471 AbstractCegarLoop]: Abstraction has 13142 states and 18770 transitions. [2024-11-22 11:46:01,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-22 11:46:01,848 INFO L276 IsEmpty]: Start isEmpty. Operand 13142 states and 18770 transitions. [2024-11-22 11:46:01,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-11-22 11:46:01,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:46:01,852 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:46:01,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 11:46:01,852 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:46:01,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:46:01,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1965739542, now seen corresponding path program 1 times [2024-11-22 11:46:01,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:46:01,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246811083] [2024-11-22 11:46:01,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:46:01,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:46:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat