./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-10.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_loopvsstraightlinecode_50-while_file-10.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 dffb49b583bf1b2953c0c17a06d6fc63bf48c484ad06befbc2660a12f206f89f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:13:03,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:13:03,643 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:13:03,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:13:03,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:13:03,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:13:03,670 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:13:03,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:13:03,671 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:13:03,671 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:13:03,671 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:13:03,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:13:03,672 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:13:03,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:13:03,673 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:13:03,674 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:13:03,674 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:13:03,674 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:13:03,675 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:13:03,675 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:13:03,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:13:03,676 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:13:03,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:13:03,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:13:03,683 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:13:03,683 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:13:03,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:13:03,684 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:13:03,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:13:03,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:13:03,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:13:03,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:13:03,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:13:03,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:13:03,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:13:03,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:13:03,690 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:13:03,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:13:03,691 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:13:03,691 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:13:03,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:13:03,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:13:03,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dffb49b583bf1b2953c0c17a06d6fc63bf48c484ad06befbc2660a12f206f89f [2024-11-18 23:13:03,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:13:03,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:13:03,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:13:03,982 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:13:03,982 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:13:03,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-10.i [2024-11-18 23:13:05,386 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:13:05,598 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:13:05,598 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-10.i [2024-11-18 23:13:05,611 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c134ec233/7e9eaa13fc7e4ce5be4982b6d0691a75/FLAGf45e40a12 [2024-11-18 23:13:05,629 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c134ec233/7e9eaa13fc7e4ce5be4982b6d0691a75 [2024-11-18 23:13:05,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:13:05,636 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:13:05,637 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:13:05,637 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:13:05,643 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:13:05,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:13:05" (1/1) ... [2024-11-18 23:13:05,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e190dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05, skipping insertion in model container [2024-11-18 23:13:05,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:13:05" (1/1) ... [2024-11-18 23:13:05,676 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:13:05,852 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_loopvsstraightlinecode_50-while_file-10.i[915,928] [2024-11-18 23:13:05,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:13:05,932 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:13:05,943 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_loopvsstraightlinecode_50-while_file-10.i[915,928] [2024-11-18 23:13:05,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:13:05,997 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:13:05,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05 WrapperNode [2024-11-18 23:13:05,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:13:05,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:13:05,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:13:05,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:13:06,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05" (1/1) ... [2024-11-18 23:13:06,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05" (1/1) ... [2024-11-18 23:13:06,064 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 166 [2024-11-18 23:13:06,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:13:06,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:13:06,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:13:06,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:13:06,081 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05" (1/1) ... [2024-11-18 23:13:06,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05" (1/1) ... [2024-11-18 23:13:06,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05" (1/1) ... [2024-11-18 23:13:06,110 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 23:13:06,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05" (1/1) ... [2024-11-18 23:13:06,111 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05" (1/1) ... [2024-11-18 23:13:06,153 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05" (1/1) ... [2024-11-18 23:13:06,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05" (1/1) ... [2024-11-18 23:13:06,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05" (1/1) ... [2024-11-18 23:13:06,177 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05" (1/1) ... [2024-11-18 23:13:06,183 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:13:06,188 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:13:06,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:13:06,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:13:06,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05" (1/1) ... [2024-11-18 23:13:06,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:13:06,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:13:06,245 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 23:13:06,248 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 23:13:06,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:13:06,299 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:13:06,300 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:13:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:13:06,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:13:06,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:13:06,390 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:13:06,392 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:13:06,790 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-18 23:13:06,790 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:13:06,808 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:13:06,808 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:13:06,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:13:06 BoogieIcfgContainer [2024-11-18 23:13:06,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:13:06,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:13:06,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:13:06,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:13:06,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:13:05" (1/3) ... [2024-11-18 23:13:06,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d572827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:13:06, skipping insertion in model container [2024-11-18 23:13:06,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:13:05" (2/3) ... [2024-11-18 23:13:06,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d572827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:13:06, skipping insertion in model container [2024-11-18 23:13:06,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:13:06" (3/3) ... [2024-11-18 23:13:06,822 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-10.i [2024-11-18 23:13:06,835 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:13:06,836 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:13:06,901 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:13:06,908 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;@6aabf0d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:13:06,909 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:13:06,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 54 states have internal predecessors, (74), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-18 23:13:06,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-18 23:13:06,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:13:06,929 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:06,930 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:13:06,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:13:06,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1915142532, now seen corresponding path program 1 times [2024-11-18 23:13:06,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:13:06,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253604604] [2024-11-18 23:13:06,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:13:06,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:13:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:13:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-18 23:13:07,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:13:07,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253604604] [2024-11-18 23:13:07,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253604604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:13:07,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:13:07,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:13:07,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886539525] [2024-11-18 23:13:07,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:13:07,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:13:07,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:13:07,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:13:07,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:13:07,956 INFO L87 Difference]: Start difference. First operand has 74 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 54 states have internal predecessors, (74), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-18 23:13:08,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:13:08,244 INFO L93 Difference]: Finished difference Result 209 states and 357 transitions. [2024-11-18 23:13:08,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:13:08,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 122 [2024-11-18 23:13:08,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:13:08,259 INFO L225 Difference]: With dead ends: 209 [2024-11-18 23:13:08,260 INFO L226 Difference]: Without dead ends: 138 [2024-11-18 23:13:08,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:13:08,267 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 72 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:13:08,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 384 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:13:08,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-18 23:13:08,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 104. [2024-11-18 23:13:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 65 states have internal predecessors, (82), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-18 23:13:08,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2024-11-18 23:13:08,329 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 122 [2024-11-18 23:13:08,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:13:08,332 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2024-11-18 23:13:08,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-18 23:13:08,332 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2024-11-18 23:13:08,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 23:13:08,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:13:08,336 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:08,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 23:13:08,336 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:13:08,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:13:08,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2009744545, now seen corresponding path program 1 times [2024-11-18 23:13:08,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:13:08,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756496211] [2024-11-18 23:13:08,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:13:08,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:13:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:13:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-18 23:13:27,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:13:27,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756496211] [2024-11-18 23:13:27,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756496211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:13:27,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:13:27,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 23:13:27,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332369232] [2024-11-18 23:13:27,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:13:27,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 23:13:27,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:13:27,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 23:13:27,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:13:27,713 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 23:13:29,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:13:29,502 INFO L93 Difference]: Finished difference Result 341 states and 493 transitions. [2024-11-18 23:13:29,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 23:13:29,503 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 123 [2024-11-18 23:13:29,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:13:29,506 INFO L225 Difference]: With dead ends: 341 [2024-11-18 23:13:29,507 INFO L226 Difference]: Without dead ends: 274 [2024-11-18 23:13:29,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2024-11-18 23:13:29,513 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 701 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:13:29,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 522 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 23:13:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-18 23:13:29,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 187. [2024-11-18 23:13:29,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 128 states have (on average 1.296875) internal successors, (166), 129 states have internal predecessors, (166), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 23:13:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 274 transitions. [2024-11-18 23:13:29,572 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 274 transitions. Word has length 123 [2024-11-18 23:13:29,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:13:29,573 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 274 transitions. [2024-11-18 23:13:29,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 23:13:29,573 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 274 transitions. [2024-11-18 23:13:29,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 23:13:29,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:13:29,576 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:29,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:13:29,576 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:13:29,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:13:29,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1329686175, now seen corresponding path program 1 times [2024-11-18 23:13:29,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:13:29,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567571860] [2024-11-18 23:13:29,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:13:29,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:13:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:14:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-18 23:14:27,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:14:27,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567571860] [2024-11-18 23:14:27,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567571860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:14:27,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:14:27,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 23:14:27,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876319845] [2024-11-18 23:14:27,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:14:27,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 23:14:27,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:14:27,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 23:14:27,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:14:27,134 INFO L87 Difference]: Start difference. First operand 187 states and 274 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 23:14:28,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:14:28,864 INFO L93 Difference]: Finished difference Result 343 states and 492 transitions. [2024-11-18 23:14:28,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 23:14:28,865 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 123 [2024-11-18 23:14:28,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:14:28,870 INFO L225 Difference]: With dead ends: 343 [2024-11-18 23:14:28,870 INFO L226 Difference]: Without dead ends: 276 [2024-11-18 23:14:28,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2024-11-18 23:14:28,872 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 476 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:14:28,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 528 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 23:14:28,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-18 23:14:28,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 187. [2024-11-18 23:14:28,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 128 states have (on average 1.296875) internal successors, (166), 129 states have internal predecessors, (166), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 23:14:28,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 274 transitions. [2024-11-18 23:14:28,895 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 274 transitions. Word has length 123 [2024-11-18 23:14:28,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:14:28,896 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 274 transitions. [2024-11-18 23:14:28,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 23:14:28,897 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 274 transitions. [2024-11-18 23:14:28,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 23:14:28,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:14:28,902 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:14:28,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:14:28,903 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:14:28,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:14:28,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1137097311, now seen corresponding path program 1 times [2024-11-18 23:14:28,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:14:28,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330766375] [2024-11-18 23:14:28,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:14:28,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:14:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat