./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.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 36737b7958ca72f0774fc0f7ccab03861500afa24766b605f5269ead47c0b677 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:25:34,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:25:34,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:25:34,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:25:34,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:25:34,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:25:34,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:25:34,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:25:34,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:25:34,690 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:25:34,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:25:34,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:25:34,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:25:34,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:25:34,692 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:25:34,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:25:34,693 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:25:34,693 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:25:34,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:25:34,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:25:34,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:25:34,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:25:34,698 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:25:34,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:25:34,698 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:25:34,698 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:25:34,699 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:25:34,699 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:25:34,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:25:34,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:25:34,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:25:34,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:25:34,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:25:34,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:25:34,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:25:34,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:25:34,700 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:25:34,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:25:34,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:25:34,702 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:25:34,702 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:25:34,703 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:25:34,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36737b7958ca72f0774fc0f7ccab03861500afa24766b605f5269ead47c0b677 [2024-11-18 23:25:34,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:25:34,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:25:34,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:25:34,992 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:25:34,993 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:25:34,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.i [2024-11-18 23:25:36,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:25:36,666 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:25:36,668 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.i [2024-11-18 23:25:36,678 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/217826cbc/d1bfe42f856e45448c0ba1121e2ac6e1/FLAG708f3a673 [2024-11-18 23:25:36,691 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/217826cbc/d1bfe42f856e45448c0ba1121e2ac6e1 [2024-11-18 23:25:36,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:25:36,694 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:25:36,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:25:36,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:25:36,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:25:36,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:25:36" (1/1) ... [2024-11-18 23:25:36,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522e74d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:36, skipping insertion in model container [2024-11-18 23:25:36,703 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:25:36" (1/1) ... [2024-11-18 23:25:36,741 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:25:36,910 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_amount100_file-20.i[916,929] [2024-11-18 23:25:37,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:25:37,014 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:25:37,029 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_amount100_file-20.i[916,929] [2024-11-18 23:25:37,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:25:37,112 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:25:37,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:37 WrapperNode [2024-11-18 23:25:37,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:25:37,114 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:25:37,114 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:25:37,114 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:25:37,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:37" (1/1) ... [2024-11-18 23:25:37,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:37" (1/1) ... [2024-11-18 23:25:37,211 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 261 [2024-11-18 23:25:37,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:25:37,214 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:25:37,214 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:25:37,214 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:25:37,225 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:37" (1/1) ... [2024-11-18 23:25:37,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:37" (1/1) ... [2024-11-18 23:25:37,231 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:37" (1/1) ... [2024-11-18 23:25:37,280 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 23:25:37,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:37" (1/1) ... [2024-11-18 23:25:37,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:37" (1/1) ... [2024-11-18 23:25:37,304 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:37" (1/1) ... [2024-11-18 23:25:37,313 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:37" (1/1) ... [2024-11-18 23:25:37,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:37" (1/1) ... [2024-11-18 23:25:37,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:37" (1/1) ... [2024-11-18 23:25:37,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:25:37,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:25:37,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:25:37,341 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:25:37,342 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:37" (1/1) ... [2024-11-18 23:25:37,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:25:37,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:25:37,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 23:25:37,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 23:25:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:25:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:25:37,436 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:25:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:25:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:25:37,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:25:37,542 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:25:37,545 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:25:38,075 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-11-18 23:25:38,076 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:25:38,106 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:25:38,106 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:25:38,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:25:38 BoogieIcfgContainer [2024-11-18 23:25:38,107 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:25:38,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:25:38,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:25:38,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:25:38,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:25:36" (1/3) ... [2024-11-18 23:25:38,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b14cd60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:25:38, skipping insertion in model container [2024-11-18 23:25:38,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:37" (2/3) ... [2024-11-18 23:25:38,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b14cd60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:25:38, skipping insertion in model container [2024-11-18 23:25:38,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:25:38" (3/3) ... [2024-11-18 23:25:38,146 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-20.i [2024-11-18 23:25:38,188 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:25:38,191 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:25:38,254 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:25:38,260 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;@4a6e35ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:25:38,261 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:25:38,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 83 states have internal predecessors, (118), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 23:25:38,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-18 23:25:38,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:25:38,279 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:25:38,280 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:25:38,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:25:38,286 INFO L85 PathProgramCache]: Analyzing trace with hash -188708125, now seen corresponding path program 1 times [2024-11-18 23:25:38,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:25:38,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300992873] [2024-11-18 23:25:38,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:25:38,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:25:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:25:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-18 23:25:38,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:25:38,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300992873] [2024-11-18 23:25:38,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300992873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:25:38,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193885730] [2024-11-18 23:25:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:25:38,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:25:38,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:25:38,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:25:38,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:25:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:25:38,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:25:38,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:25:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-18 23:25:39,023 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:25:39,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193885730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:25:39,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:25:39,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:25:39,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358397510] [2024-11-18 23:25:39,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:25:39,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:25:39,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:25:39,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:25:39,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:25:39,065 INFO L87 Difference]: Start difference. First operand has 116 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 83 states have internal predecessors, (118), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-18 23:25:39,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:25:39,102 INFO L93 Difference]: Finished difference Result 225 states and 385 transitions. [2024-11-18 23:25:39,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:25:39,104 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 204 [2024-11-18 23:25:39,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:25:39,111 INFO L225 Difference]: With dead ends: 225 [2024-11-18 23:25:39,111 INFO L226 Difference]: Without dead ends: 112 [2024-11-18 23:25:39,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:25:39,117 INFO L432 NwaCegarLoop]: 173 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, 173 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:25:39,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:25:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-18 23:25:39,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-18 23:25:39,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 79 states have (on average 1.4050632911392404) internal successors, (111), 79 states have internal predecessors, (111), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 23:25:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 173 transitions. [2024-11-18 23:25:39,166 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 173 transitions. Word has length 204 [2024-11-18 23:25:39,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:25:39,166 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 173 transitions. [2024-11-18 23:25:39,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-18 23:25:39,167 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 173 transitions. [2024-11-18 23:25:39,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-18 23:25:39,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:25:39,171 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:25:39,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:25:39,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:25:39,373 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:25:39,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:25:39,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1828239895, now seen corresponding path program 1 times [2024-11-18 23:25:39,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:25:39,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955311622] [2024-11-18 23:25:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:25:39,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:25:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:25:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:25:39,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:25:39,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955311622] [2024-11-18 23:25:39,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955311622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:25:39,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:25:39,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:25:39,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124074205] [2024-11-18 23:25:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:25:39,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:25:39,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:25:39,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:25:39,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:25:39,973 INFO L87 Difference]: Start difference. First operand 112 states and 173 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:40,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:25:40,359 INFO L93 Difference]: Finished difference Result 364 states and 565 transitions. [2024-11-18 23:25:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:25:40,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-11-18 23:25:40,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:25:40,365 INFO L225 Difference]: With dead ends: 364 [2024-11-18 23:25:40,366 INFO L226 Difference]: Without dead ends: 255 [2024-11-18 23:25:40,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:25:40,368 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 169 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:25:40,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 737 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:25:40,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-18 23:25:40,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 244. [2024-11-18 23:25:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 179 states have (on average 1.4022346368715084) internal successors, (251), 179 states have internal predecessors, (251), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 23:25:40,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 375 transitions. [2024-11-18 23:25:40,398 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 375 transitions. Word has length 204 [2024-11-18 23:25:40,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:25:40,399 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 375 transitions. [2024-11-18 23:25:40,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:40,400 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 375 transitions. [2024-11-18 23:25:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-18 23:25:40,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:25:40,403 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:25:40,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:25:40,403 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:25:40,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:25:40,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2066247177, now seen corresponding path program 1 times [2024-11-18 23:25:40,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:25:40,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251323991] [2024-11-18 23:25:40,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:25:40,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:25:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:25:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:25:40,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:25:40,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251323991] [2024-11-18 23:25:40,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251323991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:25:40,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:25:40,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:25:40,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563430643] [2024-11-18 23:25:40,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:25:40,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:25:40,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:25:40,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:25:40,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:25:40,856 INFO L87 Difference]: Start difference. First operand 244 states and 375 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:41,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:25:41,161 INFO L93 Difference]: Finished difference Result 709 states and 1090 transitions. [2024-11-18 23:25:41,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:25:41,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 205 [2024-11-18 23:25:41,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:25:41,174 INFO L225 Difference]: With dead ends: 709 [2024-11-18 23:25:41,174 INFO L226 Difference]: Without dead ends: 468 [2024-11-18 23:25:41,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:25:41,181 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 143 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:25:41,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 581 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:25:41,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-18 23:25:41,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 319. [2024-11-18 23:25:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 254 states have (on average 1.4488188976377954) internal successors, (368), 254 states have internal predecessors, (368), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 23:25:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 492 transitions. [2024-11-18 23:25:41,249 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 492 transitions. Word has length 205 [2024-11-18 23:25:41,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:25:41,252 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 492 transitions. [2024-11-18 23:25:41,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 492 transitions. [2024-11-18 23:25:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 23:25:41,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:25:41,255 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:25:41,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:25:41,257 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:25:41,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:25:41,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1587730258, now seen corresponding path program 1 times [2024-11-18 23:25:41,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:25:41,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349466726] [2024-11-18 23:25:41,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:25:41,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:25:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:25:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:25:41,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:25:41,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349466726] [2024-11-18 23:25:41,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349466726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:25:41,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:25:41,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 23:25:41,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740364681] [2024-11-18 23:25:41,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:25:41,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 23:25:41,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:25:41,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 23:25:41,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:25:41,882 INFO L87 Difference]: Start difference. First operand 319 states and 492 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:42,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:25:42,531 INFO L93 Difference]: Finished difference Result 929 states and 1406 transitions. [2024-11-18 23:25:42,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 23:25:42,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-18 23:25:42,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:25:42,540 INFO L225 Difference]: With dead ends: 929 [2024-11-18 23:25:42,541 INFO L226 Difference]: Without dead ends: 613 [2024-11-18 23:25:42,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:25:42,544 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 145 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:25:42,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 947 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 23:25:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-18 23:25:42,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 531. [2024-11-18 23:25:42,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 452 states have (on average 1.4623893805309736) internal successors, (661), 454 states have internal predecessors, (661), 74 states have call successors, (74), 4 states have call predecessors, (74), 4 states have return successors, (74), 72 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-18 23:25:42,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 809 transitions. [2024-11-18 23:25:42,598 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 809 transitions. Word has length 206 [2024-11-18 23:25:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:25:42,600 INFO L471 AbstractCegarLoop]: Abstraction has 531 states and 809 transitions. [2024-11-18 23:25:42,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:42,600 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 809 transitions. [2024-11-18 23:25:42,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 23:25:42,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:25:42,604 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:25:42,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:25:42,604 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:25:42,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:25:42,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1165028432, now seen corresponding path program 1 times [2024-11-18 23:25:42,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:25:42,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084763918] [2024-11-18 23:25:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:25:42,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:25:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:25:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:25:44,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:25:44,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084763918] [2024-11-18 23:25:44,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084763918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:25:44,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:25:44,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:25:44,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005676104] [2024-11-18 23:25:44,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:25:44,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:25:44,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:25:44,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:25:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:25:44,880 INFO L87 Difference]: Start difference. First operand 531 states and 809 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:46,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:25:46,495 INFO L93 Difference]: Finished difference Result 1594 states and 2395 transitions. [2024-11-18 23:25:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:25:46,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-18 23:25:46,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:25:46,503 INFO L225 Difference]: With dead ends: 1594 [2024-11-18 23:25:46,504 INFO L226 Difference]: Without dead ends: 1066 [2024-11-18 23:25:46,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:25:46,506 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 217 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:25:46,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 808 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 23:25:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2024-11-18 23:25:46,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 602. [2024-11-18 23:25:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 523 states have (on average 1.4703632887189293) internal successors, (769), 525 states have internal predecessors, (769), 74 states have call successors, (74), 4 states have call predecessors, (74), 4 states have return successors, (74), 72 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-18 23:25:46,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 917 transitions. [2024-11-18 23:25:46,553 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 917 transitions. Word has length 206 [2024-11-18 23:25:46,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:25:46,554 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 917 transitions. [2024-11-18 23:25:46,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:46,554 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 917 transitions. [2024-11-18 23:25:46,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 23:25:46,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:25:46,558 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:25:46,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:25:46,559 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:25:46,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:25:46,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1850075186, now seen corresponding path program 1 times [2024-11-18 23:25:46,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:25:46,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572874100] [2024-11-18 23:25:46,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:25:46,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:25:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:25:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:25:48,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:25:48,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572874100] [2024-11-18 23:25:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572874100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:25:48,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:25:48,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:25:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634667167] [2024-11-18 23:25:48,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:25:48,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:25:48,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:25:48,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:25:48,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:25:48,178 INFO L87 Difference]: Start difference. First operand 602 states and 917 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:49,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:25:49,670 INFO L93 Difference]: Finished difference Result 1628 states and 2413 transitions. [2024-11-18 23:25:49,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:25:49,671 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-18 23:25:49,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:25:49,676 INFO L225 Difference]: With dead ends: 1628 [2024-11-18 23:25:49,676 INFO L226 Difference]: Without dead ends: 1029 [2024-11-18 23:25:49,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:25:49,680 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 405 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:25:49,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 649 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 23:25:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2024-11-18 23:25:49,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 667. [2024-11-18 23:25:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 588 states have (on average 1.477891156462585) internal successors, (869), 590 states have internal predecessors, (869), 74 states have call successors, (74), 4 states have call predecessors, (74), 4 states have return successors, (74), 72 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-18 23:25:49,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1017 transitions. [2024-11-18 23:25:49,720 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1017 transitions. Word has length 206 [2024-11-18 23:25:49,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:25:49,723 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 1017 transitions. [2024-11-18 23:25:49,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:49,724 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1017 transitions. [2024-11-18 23:25:49,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 23:25:49,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:25:49,727 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:25:49,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:25:49,727 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:25:49,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:25:49,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1453716752, now seen corresponding path program 1 times [2024-11-18 23:25:49,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:25:49,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229779190] [2024-11-18 23:25:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:25:49,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:25:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:25:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:25:51,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:25:51,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229779190] [2024-11-18 23:25:51,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229779190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:25:51,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:25:51,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:25:51,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329888230] [2024-11-18 23:25:51,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:25:51,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:25:51,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:25:51,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:25:51,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:25:51,542 INFO L87 Difference]: Start difference. First operand 667 states and 1017 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:52,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:25:52,591 INFO L93 Difference]: Finished difference Result 2172 states and 3292 transitions. [2024-11-18 23:25:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:25:52,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-18 23:25:52,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:25:52,599 INFO L225 Difference]: With dead ends: 2172 [2024-11-18 23:25:52,599 INFO L226 Difference]: Without dead ends: 1508 [2024-11-18 23:25:52,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:25:52,602 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 344 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:25:52,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 631 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 23:25:52,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2024-11-18 23:25:52,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 793. [2024-11-18 23:25:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 714 states have (on average 1.4943977591036415) internal successors, (1067), 716 states have internal predecessors, (1067), 74 states have call successors, (74), 4 states have call predecessors, (74), 4 states have return successors, (74), 72 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-18 23:25:52,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1215 transitions. [2024-11-18 23:25:52,647 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1215 transitions. Word has length 206 [2024-11-18 23:25:52,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:25:52,647 INFO L471 AbstractCegarLoop]: Abstraction has 793 states and 1215 transitions. [2024-11-18 23:25:52,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:52,648 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1215 transitions. [2024-11-18 23:25:52,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 23:25:52,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:25:52,652 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:25:52,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:25:52,653 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:25:52,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:25:52,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1031014926, now seen corresponding path program 1 times [2024-11-18 23:25:52,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:25:52,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039471477] [2024-11-18 23:25:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:25:52,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:25:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:25:54,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:25:54,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:25:54,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039471477] [2024-11-18 23:25:54,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039471477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:25:54,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:25:54,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 23:25:54,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940794538] [2024-11-18 23:25:54,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:25:54,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:25:54,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:25:54,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:25:54,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:25:54,298 INFO L87 Difference]: Start difference. First operand 793 states and 1215 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:55,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:25:55,299 INFO L93 Difference]: Finished difference Result 2088 states and 3113 transitions. [2024-11-18 23:25:55,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:25:55,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-18 23:25:55,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:25:55,306 INFO L225 Difference]: With dead ends: 2088 [2024-11-18 23:25:55,307 INFO L226 Difference]: Without dead ends: 1298 [2024-11-18 23:25:55,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:25:55,310 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 241 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:25:55,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 712 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 23:25:55,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2024-11-18 23:25:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 763. [2024-11-18 23:25:55,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 684 states have (on average 1.4912280701754386) internal successors, (1020), 686 states have internal predecessors, (1020), 74 states have call successors, (74), 4 states have call predecessors, (74), 4 states have return successors, (74), 72 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-18 23:25:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1168 transitions. [2024-11-18 23:25:55,348 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1168 transitions. Word has length 206 [2024-11-18 23:25:55,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:25:55,348 INFO L471 AbstractCegarLoop]: Abstraction has 763 states and 1168 transitions. [2024-11-18 23:25:55,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:55,349 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1168 transitions. [2024-11-18 23:25:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 23:25:55,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:25:55,353 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:25:55,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 23:25:55,353 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:25:55,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:25:55,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1079332166, now seen corresponding path program 1 times [2024-11-18 23:25:55,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:25:55,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352440103] [2024-11-18 23:25:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:25:55,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:25:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:25:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:25:56,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:25:56,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352440103] [2024-11-18 23:25:56,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352440103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:25:56,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:25:56,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:25:56,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941239199] [2024-11-18 23:25:56,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:25:56,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:25:56,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:25:56,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:25:56,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:25:56,982 INFO L87 Difference]: Start difference. First operand 763 states and 1168 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:25:58,624 INFO L93 Difference]: Finished difference Result 2856 states and 4327 transitions. [2024-11-18 23:25:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 23:25:58,625 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-18 23:25:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:25:58,633 INFO L225 Difference]: With dead ends: 2856 [2024-11-18 23:25:58,634 INFO L226 Difference]: Without dead ends: 2096 [2024-11-18 23:25:58,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:25:58,638 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 492 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:25:58,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 710 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 23:25:58,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2024-11-18 23:25:58,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 763. [2024-11-18 23:25:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 684 states have (on average 1.4912280701754386) internal successors, (1020), 686 states have internal predecessors, (1020), 74 states have call successors, (74), 4 states have call predecessors, (74), 4 states have return successors, (74), 72 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-18 23:25:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1168 transitions. [2024-11-18 23:25:58,685 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1168 transitions. Word has length 206 [2024-11-18 23:25:58,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:25:58,686 INFO L471 AbstractCegarLoop]: Abstraction has 763 states and 1168 transitions. [2024-11-18 23:25:58,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:58,686 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1168 transitions. [2024-11-18 23:25:58,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 23:25:58,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:25:58,689 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:25:58,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 23:25:58,689 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:25:58,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:25:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1272800966, now seen corresponding path program 1 times [2024-11-18 23:25:58,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:25:58,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307410884] [2024-11-18 23:25:58,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:25:58,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:25:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:25:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:25:58,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:25:58,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307410884] [2024-11-18 23:25:58,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307410884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:25:58,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:25:58,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:25:58,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155472875] [2024-11-18 23:25:58,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:25:58,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:25:58,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:25:58,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:25:58,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:25:58,789 INFO L87 Difference]: Start difference. First operand 763 states and 1168 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:58,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:25:58,889 INFO L93 Difference]: Finished difference Result 1920 states and 2939 transitions. [2024-11-18 23:25:58,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:25:58,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-11-18 23:25:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:25:58,897 INFO L225 Difference]: With dead ends: 1920 [2024-11-18 23:25:58,897 INFO L226 Difference]: Without dead ends: 1160 [2024-11-18 23:25:58,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:25:58,899 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 149 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:25:58,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 456 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:25:58,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2024-11-18 23:25:58,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 955. [2024-11-18 23:25:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 876 states have (on average 1.5114155251141552) internal successors, (1324), 878 states have internal predecessors, (1324), 74 states have call successors, (74), 4 states have call predecessors, (74), 4 states have return successors, (74), 72 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-18 23:25:58,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1472 transitions. [2024-11-18 23:25:58,944 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1472 transitions. Word has length 206 [2024-11-18 23:25:58,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:25:58,945 INFO L471 AbstractCegarLoop]: Abstraction has 955 states and 1472 transitions. [2024-11-18 23:25:58,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:58,945 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1472 transitions. [2024-11-18 23:25:58,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-18 23:25:58,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:25:58,948 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:25:58,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 23:25:58,949 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:25:58,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:25:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash -514735654, now seen corresponding path program 1 times [2024-11-18 23:25:58,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:25:58,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048916893] [2024-11-18 23:25:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:25:58,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:25:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:25:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:25:59,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:25:59,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048916893] [2024-11-18 23:25:59,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048916893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:25:59,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:25:59,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:25:59,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141977525] [2024-11-18 23:25:59,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:25:59,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:25:59,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:25:59,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:25:59,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:25:59,151 INFO L87 Difference]: Start difference. First operand 955 states and 1472 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:25:59,581 INFO L93 Difference]: Finished difference Result 2316 states and 3565 transitions. [2024-11-18 23:25:59,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:25:59,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 207 [2024-11-18 23:25:59,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:25:59,588 INFO L225 Difference]: With dead ends: 2316 [2024-11-18 23:25:59,588 INFO L226 Difference]: Without dead ends: 1364 [2024-11-18 23:25:59,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:25:59,590 INFO L432 NwaCegarLoop]: 309 mSDtfsCounter, 154 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:25:59,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 657 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:25:59,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2024-11-18 23:25:59,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 967. [2024-11-18 23:25:59,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 888 states have (on average 1.509009009009009) internal successors, (1340), 890 states have internal predecessors, (1340), 74 states have call successors, (74), 4 states have call predecessors, (74), 4 states have return successors, (74), 72 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-18 23:25:59,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1488 transitions. [2024-11-18 23:25:59,636 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1488 transitions. Word has length 207 [2024-11-18 23:25:59,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:25:59,636 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 1488 transitions. [2024-11-18 23:25:59,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1488 transitions. [2024-11-18 23:25:59,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 23:25:59,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:25:59,639 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:25:59,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 23:25:59,640 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:25:59,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:25:59,640 INFO L85 PathProgramCache]: Analyzing trace with hash -163722389, now seen corresponding path program 1 times [2024-11-18 23:25:59,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:25:59,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937542997] [2024-11-18 23:25:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:25:59,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:25:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:25:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:25:59,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:25:59,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937542997] [2024-11-18 23:25:59,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937542997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:25:59,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:25:59,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:25:59,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945311180] [2024-11-18 23:25:59,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:25:59,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:25:59,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:25:59,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:25:59,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:25:59,717 INFO L87 Difference]: Start difference. First operand 967 states and 1488 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:59,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:25:59,794 INFO L93 Difference]: Finished difference Result 1888 states and 2917 transitions. [2024-11-18 23:25:59,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:25:59,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 208 [2024-11-18 23:25:59,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:25:59,801 INFO L225 Difference]: With dead ends: 1888 [2024-11-18 23:25:59,801 INFO L226 Difference]: Without dead ends: 1341 [2024-11-18 23:25:59,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:25:59,803 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 155 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:25:59,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 376 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:25:59,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2024-11-18 23:25:59,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1339. [2024-11-18 23:25:59,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1221 states have (on average 1.4398034398034398) internal successors, (1758), 1224 states have internal predecessors, (1758), 111 states have call successors, (111), 6 states have call predecessors, (111), 6 states have return successors, (111), 108 states have call predecessors, (111), 111 states have call successors, (111) [2024-11-18 23:25:59,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1980 transitions. [2024-11-18 23:25:59,864 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1980 transitions. Word has length 208 [2024-11-18 23:25:59,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:25:59,865 INFO L471 AbstractCegarLoop]: Abstraction has 1339 states and 1980 transitions. [2024-11-18 23:25:59,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:25:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1980 transitions. [2024-11-18 23:25:59,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 23:25:59,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:25:59,868 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:25:59,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 23:25:59,869 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:25:59,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:25:59,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1852938955, now seen corresponding path program 1 times [2024-11-18 23:25:59,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:25:59,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53096672] [2024-11-18 23:25:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:25:59,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:25:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-18 23:26:00,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:26:00,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53096672] [2024-11-18 23:26:00,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53096672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:26:00,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815209557] [2024-11-18 23:26:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:00,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:26:00,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:26:00,235 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:26:00,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 23:26:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:00,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 23:26:00,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:26:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 872 proven. 114 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2024-11-18 23:26:01,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:26:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-18 23:26:01,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815209557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:26:01,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:26:01,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 7] total 21 [2024-11-18 23:26:01,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690669038] [2024-11-18 23:26:01,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:26:01,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 23:26:01,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:26:01,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 23:26:01,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-11-18 23:26:01,806 INFO L87 Difference]: Start difference. First operand 1339 states and 1980 transitions. Second operand has 21 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 6 states have call successors, (82), 4 states have call predecessors, (82), 7 states have return successors, (83), 6 states have call predecessors, (83), 6 states have call successors, (83) [2024-11-18 23:26:03,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:26:03,988 INFO L93 Difference]: Finished difference Result 2938 states and 4299 transitions. [2024-11-18 23:26:03,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-18 23:26:03,989 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 6 states have call successors, (82), 4 states have call predecessors, (82), 7 states have return successors, (83), 6 states have call predecessors, (83), 6 states have call successors, (83) Word has length 208 [2024-11-18 23:26:03,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:26:03,999 INFO L225 Difference]: With dead ends: 2938 [2024-11-18 23:26:03,999 INFO L226 Difference]: Without dead ends: 1602 [2024-11-18 23:26:04,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=568, Invalid=2294, Unknown=0, NotChecked=0, Total=2862 [2024-11-18 23:26:04,003 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 846 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:26:04,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1564 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 23:26:04,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2024-11-18 23:26:04,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 933. [2024-11-18 23:26:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 775 states have (on average 1.3496774193548386) internal successors, (1046), 779 states have internal predecessors, (1046), 142 states have call successors, (142), 15 states have call predecessors, (142), 15 states have return successors, (142), 138 states have call predecessors, (142), 142 states have call successors, (142) [2024-11-18 23:26:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1330 transitions. [2024-11-18 23:26:04,099 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1330 transitions. Word has length 208 [2024-11-18 23:26:04,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:26:04,099 INFO L471 AbstractCegarLoop]: Abstraction has 933 states and 1330 transitions. [2024-11-18 23:26:04,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 6 states have call successors, (82), 4 states have call predecessors, (82), 7 states have return successors, (83), 6 states have call predecessors, (83), 6 states have call successors, (83) [2024-11-18 23:26:04,100 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1330 transitions. [2024-11-18 23:26:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 23:26:04,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:26:04,103 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:26:04,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 23:26:04,303 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,SelfDestructingSolverStorable12 [2024-11-18 23:26:04,304 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:26:04,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:26:04,305 INFO L85 PathProgramCache]: Analyzing trace with hash 423265007, now seen corresponding path program 1 times [2024-11-18 23:26:04,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:26:04,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588131139] [2024-11-18 23:26:04,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:04,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:26:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:04,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:26:04,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:26:04,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588131139] [2024-11-18 23:26:04,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588131139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:26:04,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:26:04,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:26:04,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796357672] [2024-11-18 23:26:04,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:26:04,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:26:04,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:26:04,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:26:04,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:26:04,509 INFO L87 Difference]: Start difference. First operand 933 states and 1330 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:26:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:26:04,659 INFO L93 Difference]: Finished difference Result 1123 states and 1599 transitions. [2024-11-18 23:26:04,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:26:04,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 208 [2024-11-18 23:26:04,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:26:04,664 INFO L225 Difference]: With dead ends: 1123 [2024-11-18 23:26:04,664 INFO L226 Difference]: Without dead ends: 565 [2024-11-18 23:26:04,665 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 [2024-11-18 23:26:04,666 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 151 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:26:04,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 410 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:26:04,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-18 23:26:04,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 563. [2024-11-18 23:26:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 446 states have (on average 1.2757847533632287) internal successors, (569), 449 states have internal predecessors, (569), 105 states have call successors, (105), 11 states have call predecessors, (105), 11 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-18 23:26:04,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 779 transitions. [2024-11-18 23:26:04,726 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 779 transitions. Word has length 208 [2024-11-18 23:26:04,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:26:04,726 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 779 transitions. [2024-11-18 23:26:04,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:26:04,727 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 779 transitions. [2024-11-18 23:26:04,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 23:26:04,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:26:04,728 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:26:04,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 23:26:04,729 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:26:04,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:26:04,729 INFO L85 PathProgramCache]: Analyzing trace with hash 289251501, now seen corresponding path program 1 times [2024-11-18 23:26:04,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:26:04,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755136785] [2024-11-18 23:26:04,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:04,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:26:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:08,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:26:08,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:26:08,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755136785] [2024-11-18 23:26:08,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755136785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:26:08,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:26:08,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:26:08,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819157939] [2024-11-18 23:26:08,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:26:08,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:26:08,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:26:08,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:26:08,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:26:08,752 INFO L87 Difference]: Start difference. First operand 563 states and 779 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:26:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:26:10,641 INFO L93 Difference]: Finished difference Result 1351 states and 1835 transitions. [2024-11-18 23:26:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 23:26:10,642 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 208 [2024-11-18 23:26:10,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:26:10,646 INFO L225 Difference]: With dead ends: 1351 [2024-11-18 23:26:10,646 INFO L226 Difference]: Without dead ends: 852 [2024-11-18 23:26:10,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:26:10,649 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 411 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:26:10,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 566 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 23:26:10,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-11-18 23:26:10,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 569. [2024-11-18 23:26:10,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 452 states have (on average 1.2787610619469028) internal successors, (578), 455 states have internal predecessors, (578), 105 states have call successors, (105), 11 states have call predecessors, (105), 11 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-18 23:26:10,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 788 transitions. [2024-11-18 23:26:10,708 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 788 transitions. Word has length 208 [2024-11-18 23:26:10,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:26:10,709 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 788 transitions. [2024-11-18 23:26:10,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:26:10,709 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 788 transitions. [2024-11-18 23:26:10,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 23:26:10,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:26:10,711 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:26:10,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 23:26:10,711 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:26:10,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:26:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash -721865749, now seen corresponding path program 1 times [2024-11-18 23:26:10,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:26:10,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012824646] [2024-11-18 23:26:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:10,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:26:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:26:12,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:26:12,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012824646] [2024-11-18 23:26:12,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012824646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:26:12,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:26:12,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:26:12,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999841410] [2024-11-18 23:26:12,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:26:12,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:26:12,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:26:12,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:26:12,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:26:12,966 INFO L87 Difference]: Start difference. First operand 569 states and 788 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:26:14,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:26:14,519 INFO L93 Difference]: Finished difference Result 1402 states and 1895 transitions. [2024-11-18 23:26:14,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 23:26:14,520 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 208 [2024-11-18 23:26:14,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:26:14,525 INFO L225 Difference]: With dead ends: 1402 [2024-11-18 23:26:14,526 INFO L226 Difference]: Without dead ends: 897 [2024-11-18 23:26:14,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:26:14,528 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 446 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:26:14,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 446 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 23:26:14,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2024-11-18 23:26:14,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 569. [2024-11-18 23:26:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 452 states have (on average 1.2787610619469028) internal successors, (578), 455 states have internal predecessors, (578), 105 states have call successors, (105), 11 states have call predecessors, (105), 11 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-18 23:26:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 788 transitions. [2024-11-18 23:26:14,585 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 788 transitions. Word has length 208 [2024-11-18 23:26:14,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:26:14,586 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 788 transitions. [2024-11-18 23:26:14,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-18 23:26:14,586 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 788 transitions. [2024-11-18 23:26:14,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 23:26:14,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:26:14,588 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:26:14,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 23:26:14,588 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:26:14,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:26:14,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1884157805, now seen corresponding path program 1 times [2024-11-18 23:26:14,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:26:14,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204766125] [2024-11-18 23:26:14,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:14,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:26:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:26:15,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:26:15,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204766125] [2024-11-18 23:26:15,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204766125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:26:15,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:26:15,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 23:26:15,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380488303] [2024-11-18 23:26:15,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:26:15,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:26:15,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:26:15,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:26:15,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:26:15,036 INFO L87 Difference]: Start difference. First operand 569 states and 788 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-18 23:26:16,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:26:16,029 INFO L93 Difference]: Finished difference Result 1578 states and 2172 transitions. [2024-11-18 23:26:16,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:26:16,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 208 [2024-11-18 23:26:16,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:26:16,036 INFO L225 Difference]: With dead ends: 1578 [2024-11-18 23:26:16,036 INFO L226 Difference]: Without dead ends: 1073 [2024-11-18 23:26:16,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-11-18 23:26:16,041 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 402 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:26:16,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1111 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 23:26:16,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2024-11-18 23:26:16,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 835. [2024-11-18 23:26:16,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 665 states have (on average 1.281203007518797) internal successors, (852), 670 states have internal predecessors, (852), 152 states have call successors, (152), 17 states have call predecessors, (152), 17 states have return successors, (152), 147 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-18 23:26:16,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1156 transitions. [2024-11-18 23:26:16,166 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1156 transitions. Word has length 208 [2024-11-18 23:26:16,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:26:16,167 INFO L471 AbstractCegarLoop]: Abstraction has 835 states and 1156 transitions. [2024-11-18 23:26:16,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-18 23:26:16,167 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1156 transitions. [2024-11-18 23:26:16,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-18 23:26:16,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:26:16,169 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:26:16,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 23:26:16,170 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:26:16,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:26:16,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1292471947, now seen corresponding path program 1 times [2024-11-18 23:26:16,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:26:16,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694841359] [2024-11-18 23:26:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:16,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:26:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 27 proven. 63 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-18 23:26:17,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:26:17,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694841359] [2024-11-18 23:26:17,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694841359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:26:17,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960796590] [2024-11-18 23:26:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:17,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:26:17,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:26:17,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:26:17,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 23:26:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:17,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 23:26:17,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:26:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 482 proven. 150 refuted. 0 times theorem prover too weak. 1228 trivial. 0 not checked. [2024-11-18 23:26:17,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:26:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 12 proven. 78 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-18 23:26:18,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960796590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:26:18,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:26:18,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 6] total 20 [2024-11-18 23:26:18,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665423349] [2024-11-18 23:26:18,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:26:18,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 23:26:18,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:26:18,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 23:26:18,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-18 23:26:18,118 INFO L87 Difference]: Start difference. First operand 835 states and 1156 transitions. Second operand has 20 states, 20 states have (on average 6.25) internal successors, (125), 19 states have internal predecessors, (125), 5 states have call successors, (83), 3 states have call predecessors, (83), 5 states have return successors, (85), 5 states have call predecessors, (85), 5 states have call successors, (85) [2024-11-18 23:26:22,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:26:22,548 INFO L93 Difference]: Finished difference Result 1963 states and 2607 transitions. [2024-11-18 23:26:22,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-18 23:26:22,549 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 19 states have internal predecessors, (125), 5 states have call successors, (83), 3 states have call predecessors, (83), 5 states have return successors, (85), 5 states have call predecessors, (85), 5 states have call successors, (85) Word has length 209 [2024-11-18 23:26:22,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:26:22,555 INFO L225 Difference]: With dead ends: 1963 [2024-11-18 23:26:22,556 INFO L226 Difference]: Without dead ends: 1192 [2024-11-18 23:26:22,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1242, Invalid=5898, Unknown=0, NotChecked=0, Total=7140 [2024-11-18 23:26:22,560 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 1002 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:26:22,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1403 Invalid, 2457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 23:26:22,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2024-11-18 23:26:22,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 569. [2024-11-18 23:26:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 435 states have (on average 1.2091954022988505) internal successors, (526), 439 states have internal predecessors, (526), 109 states have call successors, (109), 24 states have call predecessors, (109), 24 states have return successors, (109), 105 states have call predecessors, (109), 109 states have call successors, (109) [2024-11-18 23:26:22,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 744 transitions. [2024-11-18 23:26:22,650 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 744 transitions. Word has length 209 [2024-11-18 23:26:22,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:26:22,650 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 744 transitions. [2024-11-18 23:26:22,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 19 states have internal predecessors, (125), 5 states have call successors, (83), 3 states have call predecessors, (83), 5 states have return successors, (85), 5 states have call predecessors, (85), 5 states have call successors, (85) [2024-11-18 23:26:22,651 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 744 transitions. [2024-11-18 23:26:22,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-18 23:26:22,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:26:22,651 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:26:22,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 23:26:22,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 23:26:22,852 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:26:22,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:26:22,853 INFO L85 PathProgramCache]: Analyzing trace with hash -160590480, now seen corresponding path program 1 times [2024-11-18 23:26:22,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:26:22,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438306770] [2024-11-18 23:26:22,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:22,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:26:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-18 23:26:38,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:26:38,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438306770] [2024-11-18 23:26:38,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438306770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:26:38,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:26:38,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 23:26:38,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121908149] [2024-11-18 23:26:38,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:26:38,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 23:26:38,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:26:38,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 23:26:38,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-18 23:26:38,003 INFO L87 Difference]: Start difference. First operand 569 states and 744 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31)