./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.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 cde063dcb13ed313b2f32e49cd3dc75da2c365cf6b52ae59dd9b17042beff0a8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:41:39,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:41:39,807 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:41:39,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:41:39,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:41:39,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:41:39,839 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:41:39,839 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:41:39,840 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:41:39,841 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:41:39,842 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:41:39,842 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:41:39,843 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:41:39,843 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:41:39,845 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:41:39,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:41:39,846 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:41:39,846 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:41:39,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:41:39,847 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:41:39,847 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:41:39,850 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:41:39,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:41:39,850 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:41:39,850 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:41:39,851 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:41:39,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:41:39,851 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:41:39,852 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:41:39,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:41:39,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:41:39,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:41:39,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:41:39,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:41:39,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:41:39,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:41:39,854 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:41:39,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:41:39,855 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:41:39,855 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:41:39,855 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:41:39,856 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:41:39,856 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cde063dcb13ed313b2f32e49cd3dc75da2c365cf6b52ae59dd9b17042beff0a8 [2024-11-18 23:41:40,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:41:40,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:41:40,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:41:40,138 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:41:40,138 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:41:40,140 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.i [2024-11-18 23:41:41,552 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:41:41,765 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:41:41,765 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.i [2024-11-18 23:41:41,782 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d49f14e2/ef22895404c249b2b7f721f30031f433/FLAGadc612c5f [2024-11-18 23:41:42,112 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d49f14e2/ef22895404c249b2b7f721f30031f433 [2024-11-18 23:41:42,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:41:42,115 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:41:42,118 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:41:42,118 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:41:42,122 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:41:42,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:41:42" (1/1) ... [2024-11-18 23:41:42,124 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9c53ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42, skipping insertion in model container [2024-11-18 23:41:42,124 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:41:42" (1/1) ... [2024-11-18 23:41:42,177 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:41:42,392 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.i[916,929] [2024-11-18 23:41:42,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:41:42,576 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:41:42,586 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.i[916,929] [2024-11-18 23:41:42,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:41:42,660 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:41:42,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42 WrapperNode [2024-11-18 23:41:42,661 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:41:42,662 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:41:42,662 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:41:42,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:41:42,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42" (1/1) ... [2024-11-18 23:41:42,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42" (1/1) ... [2024-11-18 23:41:42,739 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 453 [2024-11-18 23:41:42,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:41:42,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:41:42,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:41:42,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:41:42,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42" (1/1) ... [2024-11-18 23:41:42,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42" (1/1) ... [2024-11-18 23:41:42,760 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42" (1/1) ... [2024-11-18 23:41:42,786 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 23:41:42,787 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42" (1/1) ... [2024-11-18 23:41:42,787 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42" (1/1) ... [2024-11-18 23:41:42,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42" (1/1) ... [2024-11-18 23:41:42,822 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42" (1/1) ... [2024-11-18 23:41:42,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42" (1/1) ... [2024-11-18 23:41:42,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42" (1/1) ... [2024-11-18 23:41:42,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:41:42,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:41:42,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:41:42,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:41:42,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42" (1/1) ... [2024-11-18 23:41:42,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:41:42,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:41:42,897 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 23:41:42,901 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 23:41:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:41:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:41:42,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:41:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:41:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:41:42,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:41:43,059 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:41:43,061 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:41:43,813 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2024-11-18 23:41:43,814 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:41:43,833 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:41:43,835 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:41:43,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:41:43 BoogieIcfgContainer [2024-11-18 23:41:43,835 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:41:43,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:41:43,838 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:41:43,841 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:41:43,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:41:42" (1/3) ... [2024-11-18 23:41:43,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118bde02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:41:43, skipping insertion in model container [2024-11-18 23:41:43,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:42" (2/3) ... [2024-11-18 23:41:43,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118bde02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:41:43, skipping insertion in model container [2024-11-18 23:41:43,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:41:43" (3/3) ... [2024-11-18 23:41:43,845 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-27.i [2024-11-18 23:41:43,861 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:41:43,861 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:41:43,942 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:41:43,948 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;@3847bc00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:41:43,948 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:41:43,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 136 states have (on average 1.5) internal successors, (204), 137 states have internal predecessors, (204), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-18 23:41:43,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-11-18 23:41:43,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:43,976 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:43,976 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:43,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:43,982 INFO L85 PathProgramCache]: Analyzing trace with hash -916589466, now seen corresponding path program 1 times [2024-11-18 23:41:43,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:43,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005191999] [2024-11-18 23:41:43,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:43,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2024-11-18 23:41:44,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:44,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005191999] [2024-11-18 23:41:44,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005191999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:41:44,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127039731] [2024-11-18 23:41:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:44,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:41:44,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:41:44,574 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 23:41:44,575 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 23:41:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:44,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:41:44,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:41:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2024-11-18 23:41:44,939 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:41:44,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127039731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:41:44,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:41:44,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:41:44,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405561071] [2024-11-18 23:41:44,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:41:44,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:41:44,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:41:44,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:41:44,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:41:44,978 INFO L87 Difference]: Start difference. First operand has 190 states, 136 states have (on average 1.5) internal successors, (204), 137 states have internal predecessors, (204), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) [2024-11-18 23:41:45,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:41:45,017 INFO L93 Difference]: Finished difference Result 372 states and 655 transitions. [2024-11-18 23:41:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:41:45,019 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) Word has length 340 [2024-11-18 23:41:45,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:41:45,027 INFO L225 Difference]: With dead ends: 372 [2024-11-18 23:41:45,027 INFO L226 Difference]: Without dead ends: 185 [2024-11-18 23:41:45,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 341 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 23:41:45,034 INFO L432 NwaCegarLoop]: 295 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, 295 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 23:41:45,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:41:45,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-18 23:41:45,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-18 23:41:45,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 132 states have (on average 1.4621212121212122) internal successors, (193), 132 states have internal predecessors, (193), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-18 23:41:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 295 transitions. [2024-11-18 23:41:45,098 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 295 transitions. Word has length 340 [2024-11-18 23:41:45,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:41:45,099 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 295 transitions. [2024-11-18 23:41:45,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) [2024-11-18 23:41:45,100 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 295 transitions. [2024-11-18 23:41:45,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-11-18 23:41:45,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:45,113 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:45,133 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 23:41:45,314 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 23:41:45,315 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:45,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:45,315 INFO L85 PathProgramCache]: Analyzing trace with hash 563962084, now seen corresponding path program 1 times [2024-11-18 23:41:45,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:45,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727930866] [2024-11-18 23:41:45,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:45,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:46,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-11-18 23:41:46,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:46,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727930866] [2024-11-18 23:41:46,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727930866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:41:46,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:41:46,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:41:47,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452853567] [2024-11-18 23:41:47,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:41:47,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:41:47,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:41:47,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:41:47,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:41:47,006 INFO L87 Difference]: Start difference. First operand 185 states and 295 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2024-11-18 23:41:47,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:41:47,558 INFO L93 Difference]: Finished difference Result 632 states and 1009 transitions. [2024-11-18 23:41:47,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:41:47,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 341 [2024-11-18 23:41:47,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:41:47,567 INFO L225 Difference]: With dead ends: 632 [2024-11-18 23:41:47,567 INFO L226 Difference]: Without dead ends: 450 [2024-11-18 23:41:47,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:41:47,571 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 378 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:41:47,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 1166 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:41:47,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-11-18 23:41:47,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 367. [2024-11-18 23:41:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 283 states have (on average 1.5017667844522968) internal successors, (425), 284 states have internal predecessors, (425), 81 states have call successors, (81), 2 states have call predecessors, (81), 2 states have return successors, (81), 80 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 23:41:47,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 587 transitions. [2024-11-18 23:41:47,629 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 587 transitions. Word has length 341 [2024-11-18 23:41:47,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:41:47,633 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 587 transitions. [2024-11-18 23:41:47,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2024-11-18 23:41:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 587 transitions. [2024-11-18 23:41:47,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-11-18 23:41:47,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:47,640 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:47,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:41:47,640 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:47,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:47,642 INFO L85 PathProgramCache]: Analyzing trace with hash 210873702, now seen corresponding path program 1 times [2024-11-18 23:41:47,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:47,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402185629] [2024-11-18 23:41:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:47,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-11-18 23:41:47,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:47,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402185629] [2024-11-18 23:41:47,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402185629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:41:47,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:41:47,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:41:47,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402164776] [2024-11-18 23:41:47,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:41:47,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:41:47,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:41:47,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:41:47,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:41:47,866 INFO L87 Difference]: Start difference. First operand 367 states and 587 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2024-11-18 23:41:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:41:47,920 INFO L93 Difference]: Finished difference Result 737 states and 1179 transitions. [2024-11-18 23:41:47,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:41:47,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 341 [2024-11-18 23:41:47,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:41:47,928 INFO L225 Difference]: With dead ends: 737 [2024-11-18 23:41:47,929 INFO L226 Difference]: Without dead ends: 373 [2024-11-18 23:41:47,930 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 23:41:47,932 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 150 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:41:47,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 652 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:41:47,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-18 23:41:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2024-11-18 23:41:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 287 states have (on average 1.5017421602787457) internal successors, (431), 288 states have internal predecessors, (431), 81 states have call successors, (81), 2 states have call predecessors, (81), 2 states have return successors, (81), 80 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-18 23:41:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 593 transitions. [2024-11-18 23:41:47,963 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 593 transitions. Word has length 341 [2024-11-18 23:41:47,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:41:47,964 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 593 transitions. [2024-11-18 23:41:47,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2024-11-18 23:41:47,965 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 593 transitions. [2024-11-18 23:41:47,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-11-18 23:41:47,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:47,970 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:47,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:41:47,970 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:47,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:47,971 INFO L85 PathProgramCache]: Analyzing trace with hash -270206556, now seen corresponding path program 1 times [2024-11-18 23:41:47,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:47,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777116875] [2024-11-18 23:41:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:47,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-11-18 23:41:48,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:48,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777116875] [2024-11-18 23:41:48,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777116875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:41:48,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:41:48,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:41:48,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795384826] [2024-11-18 23:41:48,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:41:48,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:41:48,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:41:48,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:41:48,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:41:48,505 INFO L87 Difference]: Start difference. First operand 371 states and 593 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2024-11-18 23:41:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:41:48,759 INFO L93 Difference]: Finished difference Result 969 states and 1545 transitions. [2024-11-18 23:41:48,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:41:48,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 341 [2024-11-18 23:41:48,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:41:48,768 INFO L225 Difference]: With dead ends: 969 [2024-11-18 23:41:48,768 INFO L226 Difference]: Without dead ends: 601 [2024-11-18 23:41:48,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:41:48,771 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 198 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:41:48,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 856 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:41:48,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-11-18 23:41:48,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 464. [2024-11-18 23:41:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 327 states have (on average 1.4403669724770642) internal successors, (471), 328 states have internal predecessors, (471), 132 states have call successors, (132), 4 states have call predecessors, (132), 4 states have return successors, (132), 131 states have call predecessors, (132), 132 states have call successors, (132) [2024-11-18 23:41:48,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 735 transitions. [2024-11-18 23:41:48,869 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 735 transitions. Word has length 341 [2024-11-18 23:41:48,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:41:48,873 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 735 transitions. [2024-11-18 23:41:48,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2024-11-18 23:41:48,874 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 735 transitions. [2024-11-18 23:41:48,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-18 23:41:48,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:48,880 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:48,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:41:48,882 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:48,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:48,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1672617457, now seen corresponding path program 1 times [2024-11-18 23:41:48,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:48,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725831627] [2024-11-18 23:41:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:48,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-11-18 23:41:49,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:49,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725831627] [2024-11-18 23:41:49,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725831627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:41:49,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:41:49,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:41:49,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232870200] [2024-11-18 23:41:49,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:41:49,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:41:49,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:41:49,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:41:49,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:41:49,875 INFO L87 Difference]: Start difference. First operand 464 states and 735 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2024-11-18 23:41:50,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:41:50,571 INFO L93 Difference]: Finished difference Result 1071 states and 1694 transitions. [2024-11-18 23:41:50,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:41:50,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 342 [2024-11-18 23:41:50,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:41:50,578 INFO L225 Difference]: With dead ends: 1071 [2024-11-18 23:41:50,578 INFO L226 Difference]: Without dead ends: 703 [2024-11-18 23:41:50,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:41:50,583 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 536 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:41:50,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 740 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 23:41:50,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-18 23:41:50,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 515. [2024-11-18 23:41:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 376 states have (on average 1.4308510638297873) internal successors, (538), 377 states have internal predecessors, (538), 132 states have call successors, (132), 6 states have call predecessors, (132), 6 states have return successors, (132), 131 states have call predecessors, (132), 132 states have call successors, (132) [2024-11-18 23:41:50,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 802 transitions. [2024-11-18 23:41:50,666 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 802 transitions. Word has length 342 [2024-11-18 23:41:50,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:41:50,667 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 802 transitions. [2024-11-18 23:41:50,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2024-11-18 23:41:50,667 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 802 transitions. [2024-11-18 23:41:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-11-18 23:41:50,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:50,673 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:50,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:41:50,673 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:50,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:50,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1855721011, now seen corresponding path program 1 times [2024-11-18 23:41:50,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:50,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148117183] [2024-11-18 23:41:50,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:50,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 87 proven. 207 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2024-11-18 23:41:52,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:52,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148117183] [2024-11-18 23:41:52,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148117183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:41:52,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076871448] [2024-11-18 23:41:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:52,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:41:52,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:41:52,083 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 23:41:52,085 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 23:41:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:52,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 23:41:52,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:41:53,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 3155 proven. 192 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2024-11-18 23:41:53,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:41:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 102 proven. 195 refuted. 0 times theorem prover too weak. 4803 trivial. 0 not checked. [2024-11-18 23:41:54,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076871448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:41:54,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:41:54,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 19 [2024-11-18 23:41:54,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464418566] [2024-11-18 23:41:54,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:41:54,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 23:41:54,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:41:54,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 23:41:54,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-18 23:41:54,085 INFO L87 Difference]: Start difference. First operand 515 states and 802 transitions. Second operand has 19 states, 19 states have (on average 12.473684210526315) internal successors, (237), 19 states have internal predecessors, (237), 7 states have call successors, (133), 3 states have call predecessors, (133), 7 states have return successors, (135), 7 states have call predecessors, (135), 7 states have call successors, (135) [2024-11-18 23:41:55,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:41:55,572 INFO L93 Difference]: Finished difference Result 1274 states and 1948 transitions. [2024-11-18 23:41:55,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-18 23:41:55,573 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.473684210526315) internal successors, (237), 19 states have internal predecessors, (237), 7 states have call successors, (133), 3 states have call predecessors, (133), 7 states have return successors, (135), 7 states have call predecessors, (135), 7 states have call successors, (135) Word has length 343 [2024-11-18 23:41:55,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:41:55,578 INFO L225 Difference]: With dead ends: 1274 [2024-11-18 23:41:55,578 INFO L226 Difference]: Without dead ends: 859 [2024-11-18 23:41:55,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 680 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=477, Invalid=1245, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 23:41:55,582 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 1297 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:41:55,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 1102 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 23:41:55,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-11-18 23:41:55,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 845. [2024-11-18 23:41:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 675 states have (on average 1.4325925925925926) internal successors, (967), 678 states have internal predecessors, (967), 148 states have call successors, (148), 21 states have call predecessors, (148), 21 states have return successors, (148), 145 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 23:41:55,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1263 transitions. [2024-11-18 23:41:55,676 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1263 transitions. Word has length 343 [2024-11-18 23:41:55,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:41:55,677 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1263 transitions. [2024-11-18 23:41:55,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.473684210526315) internal successors, (237), 19 states have internal predecessors, (237), 7 states have call successors, (133), 3 states have call predecessors, (133), 7 states have return successors, (135), 7 states have call predecessors, (135), 7 states have call successors, (135) [2024-11-18 23:41:55,678 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1263 transitions. [2024-11-18 23:41:55,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-18 23:41:55,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:55,683 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:55,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 23:41:55,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 23:41:55,888 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:55,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:55,888 INFO L85 PathProgramCache]: Analyzing trace with hash -264850712, now seen corresponding path program 1 times [2024-11-18 23:41:55,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:55,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552647442] [2024-11-18 23:41:55,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:55,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 108 proven. 42 refuted. 0 times theorem prover too weak. 4950 trivial. 0 not checked. [2024-11-18 23:41:59,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:59,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552647442] [2024-11-18 23:41:59,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552647442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:41:59,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012261610] [2024-11-18 23:41:59,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:59,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:41:59,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:41:59,454 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 23:41:59,456 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 23:41:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:59,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-18 23:41:59,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:42:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 3884 proven. 444 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2024-11-18 23:42:04,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:42:19,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012261610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:42:19,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:42:19,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 28] total 39 [2024-11-18 23:42:19,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890079971] [2024-11-18 23:42:19,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:42:19,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-18 23:42:19,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:19,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-18 23:42:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2268, Unknown=2, NotChecked=0, Total=2652 [2024-11-18 23:42:19,470 INFO L87 Difference]: Start difference. First operand 845 states and 1263 transitions. Second operand has 39 states, 39 states have (on average 5.153846153846154) internal successors, (201), 38 states have internal predecessors, (201), 9 states have call successors, (102), 8 states have call predecessors, (102), 14 states have return successors, (102), 9 states have call predecessors, (102), 9 states have call successors, (102) [2024-11-18 23:42:32,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:32,185 INFO L93 Difference]: Finished difference Result 6069 states and 8998 transitions. [2024-11-18 23:42:32,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2024-11-18 23:42:32,186 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.153846153846154) internal successors, (201), 38 states have internal predecessors, (201), 9 states have call successors, (102), 8 states have call predecessors, (102), 14 states have return successors, (102), 9 states have call predecessors, (102), 9 states have call successors, (102) Word has length 345 [2024-11-18 23:42:32,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:32,216 INFO L225 Difference]: With dead ends: 6069 [2024-11-18 23:42:32,217 INFO L226 Difference]: Without dead ends: 5344 [2024-11-18 23:42:32,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12042 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=6225, Invalid=30063, Unknown=2, NotChecked=0, Total=36290 [2024-11-18 23:42:32,229 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 2626 mSDsluCounter, 3797 mSDsCounter, 0 mSdLazyCounter, 6211 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2645 SdHoareTripleChecker+Valid, 4123 SdHoareTripleChecker+Invalid, 7075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 6211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:32,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2645 Valid, 4123 Invalid, 7075 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [864 Valid, 6211 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-18 23:42:32,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2024-11-18 23:42:32,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 3953. [2024-11-18 23:42:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3408 states have (on average 1.460387323943662) internal successors, (4977), 3423 states have internal predecessors, (4977), 435 states have call successors, (435), 109 states have call predecessors, (435), 109 states have return successors, (435), 420 states have call predecessors, (435), 435 states have call successors, (435) [2024-11-18 23:42:32,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5847 transitions. [2024-11-18 23:42:32,507 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 5847 transitions. Word has length 345 [2024-11-18 23:42:32,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:32,508 INFO L471 AbstractCegarLoop]: Abstraction has 3953 states and 5847 transitions. [2024-11-18 23:42:32,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.153846153846154) internal successors, (201), 38 states have internal predecessors, (201), 9 states have call successors, (102), 8 states have call predecessors, (102), 14 states have return successors, (102), 9 states have call predecessors, (102), 9 states have call successors, (102) [2024-11-18 23:42:32,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 5847 transitions. [2024-11-18 23:42:32,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-18 23:42:32,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:32,513 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:32,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 23:42:32,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:42:32,718 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:32,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash -774323802, now seen corresponding path program 1 times [2024-11-18 23:42:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:32,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394296647] [2024-11-18 23:42:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:32,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 183 proven. 111 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2024-11-18 23:42:35,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:35,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394296647] [2024-11-18 23:42:35,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394296647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:42:35,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852464279] [2024-11-18 23:42:35,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:35,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:42:35,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:42:35,233 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:42:35,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 23:42:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:35,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-18 23:42:35,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:42:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 3746 proven. 297 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2024-11-18 23:42:39,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:42:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 393 proven. 327 refuted. 0 times theorem prover too weak. 4380 trivial. 0 not checked. [2024-11-18 23:42:42,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852464279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:42:42,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:42:42,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21, 22] total 52 [2024-11-18 23:42:42,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157829747] [2024-11-18 23:42:42,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:42:42,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-18 23:42:42,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-18 23:42:42,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=2197, Unknown=0, NotChecked=0, Total=2652 [2024-11-18 23:42:42,989 INFO L87 Difference]: Start difference. First operand 3953 states and 5847 transitions. Second operand has 52 states, 50 states have (on average 5.66) internal successors, (283), 48 states have internal predecessors, (283), 15 states have call successors, (153), 7 states have call predecessors, (153), 16 states have return successors, (153), 15 states have call predecessors, (153), 15 states have call successors, (153)