./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/insertion_sort-1-2.c --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/loops/insertion_sort-1-2.c -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 36d1103e69366c6d9110aa7e24b0c4765120510facc121d7623fcf9373a67e96 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:12:29,824 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:12:29,918 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:12:29,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:12:29,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:12:29,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:12:29,948 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:12:29,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:12:29,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:12:29,949 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:12:29,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:12:29,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:12:29,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:12:29,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:12:29,952 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:12:29,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:12:29,952 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:12:29,953 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:12:29,953 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:12:29,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:12:29,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:12:29,958 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:12:29,958 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:12:29,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:12:29,958 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:12:29,959 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:12:29,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:12:29,959 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:12:29,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:12:29,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:12:29,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:12:29,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:12:29,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:12:29,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:12:29,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:12:29,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:12:29,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:12:29,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:12:29,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:12:29,964 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:12:29,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:12:29,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:12:29,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36d1103e69366c6d9110aa7e24b0c4765120510facc121d7623fcf9373a67e96 [2024-11-18 13:12:30,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:12:30,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:12:30,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:12:30,256 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:12:30,257 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:12:30,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/insertion_sort-1-2.c [2024-11-18 13:12:31,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:12:31,929 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:12:31,930 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/insertion_sort-1-2.c [2024-11-18 13:12:31,939 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a087aa48/943951e3560c485d9628d8cb0259a151/FLAGe6dd7dfb3 [2024-11-18 13:12:31,956 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a087aa48/943951e3560c485d9628d8cb0259a151 [2024-11-18 13:12:31,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:12:31,961 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:12:31,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:12:31,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:12:31,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:12:31,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:12:31" (1/1) ... [2024-11-18 13:12:31,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@731fcb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:31, skipping insertion in model container [2024-11-18 13:12:31,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:12:31" (1/1) ... [2024-11-18 13:12:31,992 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:12:32,173 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/loops/insertion_sort-1-2.c[330,343] [2024-11-18 13:12:32,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:12:32,205 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:12:32,213 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/loops/insertion_sort-1-2.c[330,343] [2024-11-18 13:12:32,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:12:32,237 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:12:32,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:32 WrapperNode [2024-11-18 13:12:32,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:12:32,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:12:32,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:12:32,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:12:32,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:32" (1/1) ... [2024-11-18 13:12:32,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:32" (1/1) ... [2024-11-18 13:12:32,270 INFO L138 Inliner]: procedures = 15, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2024-11-18 13:12:32,271 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:12:32,271 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:12:32,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:12:32,272 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:12:32,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:32" (1/1) ... [2024-11-18 13:12:32,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:32" (1/1) ... [2024-11-18 13:12:32,283 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:32" (1/1) ... [2024-11-18 13:12:32,298 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-18 13:12:32,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:32" (1/1) ... [2024-11-18 13:12:32,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:32" (1/1) ... [2024-11-18 13:12:32,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:32" (1/1) ... [2024-11-18 13:12:32,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:32" (1/1) ... [2024-11-18 13:12:32,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:32" (1/1) ... [2024-11-18 13:12:32,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:32" (1/1) ... [2024-11-18 13:12:32,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:12:32,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:12:32,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:12:32,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:12:32,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:32" (1/1) ... [2024-11-18 13:12:32,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:12:32,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:12:32,357 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 13:12:32,362 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 13:12:32,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:12:32,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:12:32,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 13:12:32,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 13:12:32,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 13:12:32,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 13:12:32,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:12:32,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:12:32,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 13:12:32,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 13:12:32,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 13:12:32,481 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:12:32,483 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:12:32,663 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-18 13:12:32,663 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:12:32,678 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:12:32,679 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-18 13:12:32,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:12:32 BoogieIcfgContainer [2024-11-18 13:12:32,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:12:32,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:12:32,683 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:12:32,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:12:32,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:12:31" (1/3) ... [2024-11-18 13:12:32,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfed197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:12:32, skipping insertion in model container [2024-11-18 13:12:32,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:12:32" (2/3) ... [2024-11-18 13:12:32,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfed197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:12:32, skipping insertion in model container [2024-11-18 13:12:32,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:12:32" (3/3) ... [2024-11-18 13:12:32,690 INFO L112 eAbstractionObserver]: Analyzing ICFG insertion_sort-1-2.c [2024-11-18 13:12:32,705 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:12:32,705 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:12:32,757 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:12:32,764 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;@7314e9fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:12:32,764 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:12:32,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 13:12:32,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:32,773 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:32,774 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:32,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:32,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1491357889, now seen corresponding path program 1 times [2024-11-18 13:12:32,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:32,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266113390] [2024-11-18 13:12:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:32,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:12:32,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:32,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266113390] [2024-11-18 13:12:32,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266113390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:12:32,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:12:32,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 13:12:32,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123171541] [2024-11-18 13:12:32,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:12:32,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:12:32,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:12:32,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:12:32,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:12:32,968 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:32,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:32,979 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2024-11-18 13:12:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:12:32,980 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-18 13:12:32,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:32,985 INFO L225 Difference]: With dead ends: 45 [2024-11-18 13:12:32,985 INFO L226 Difference]: Without dead ends: 21 [2024-11-18 13:12:32,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 13:12:32,990 INFO L432 NwaCegarLoop]: 31 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, 31 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 13:12:32,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:12:33,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-18 13:12:33,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-18 13:12:33,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2024-11-18 13:12:33,015 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 10 [2024-11-18 13:12:33,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:33,015 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2024-11-18 13:12:33,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:33,016 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-11-18 13:12:33,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 13:12:33,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:33,017 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:33,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 13:12:33,017 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:33,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:33,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1773554617, now seen corresponding path program 1 times [2024-11-18 13:12:33,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:33,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952240458] [2024-11-18 13:12:33,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:33,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:12:33,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:33,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952240458] [2024-11-18 13:12:33,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952240458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:12:33,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:12:33,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:12:33,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919446000] [2024-11-18 13:12:33,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:12:33,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:12:33,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:12:33,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:12:33,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:12:33,337 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:33,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:33,395 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2024-11-18 13:12:33,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:12:33,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-18 13:12:33,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:33,399 INFO L225 Difference]: With dead ends: 37 [2024-11-18 13:12:33,399 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 13:12:33,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:12:33,401 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:12:33,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 74 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:12:33,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 13:12:33,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2024-11-18 13:12:33,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-18 13:12:33,407 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 10 [2024-11-18 13:12:33,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:33,407 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-18 13:12:33,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:33,408 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-18 13:12:33,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 13:12:33,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:33,408 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:33,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:12:33,409 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:33,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:33,409 INFO L85 PathProgramCache]: Analyzing trace with hash 385530252, now seen corresponding path program 1 times [2024-11-18 13:12:33,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:33,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768759404] [2024-11-18 13:12:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:33,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:12:33,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:33,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768759404] [2024-11-18 13:12:33,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768759404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:12:33,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:12:33,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:12:33,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501500140] [2024-11-18 13:12:33,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:12:33,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:12:33,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:12:33,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:12:33,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:12:33,589 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:33,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:33,628 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2024-11-18 13:12:33,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:12:33,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-18 13:12:33,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:33,631 INFO L225 Difference]: With dead ends: 41 [2024-11-18 13:12:33,631 INFO L226 Difference]: Without dead ends: 24 [2024-11-18 13:12:33,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:12:33,632 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:12:33,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:12:33,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-18 13:12:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2024-11-18 13:12:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:33,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-11-18 13:12:33,642 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 16 [2024-11-18 13:12:33,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:33,643 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-11-18 13:12:33,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:33,644 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-11-18 13:12:33,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 13:12:33,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:33,644 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:33,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 13:12:33,644 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:33,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:33,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1021685782, now seen corresponding path program 1 times [2024-11-18 13:12:33,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:33,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520457288] [2024-11-18 13:12:33,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:33,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:33,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:12:33,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:33,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520457288] [2024-11-18 13:12:33,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520457288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:12:33,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726176029] [2024-11-18 13:12:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:33,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:33,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:12:33,876 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 13:12:33,878 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 13:12:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:33,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 13:12:33,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:12:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:12:34,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:12:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:12:34,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726176029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:12:34,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:12:34,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-18 13:12:34,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368649736] [2024-11-18 13:12:34,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:12:34,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 13:12:34,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:12:34,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 13:12:34,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:12:34,119 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:34,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:34,188 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2024-11-18 13:12:34,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:12:34,189 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-18 13:12:34,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:34,189 INFO L225 Difference]: With dead ends: 50 [2024-11-18 13:12:34,190 INFO L226 Difference]: Without dead ends: 33 [2024-11-18 13:12:34,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:12:34,191 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:12:34,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 88 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:12:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-18 13:12:34,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2024-11-18 13:12:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-18 13:12:34,201 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 18 [2024-11-18 13:12:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:34,202 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-18 13:12:34,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:34,202 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-18 13:12:34,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-18 13:12:34,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:34,203 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:34,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 13:12:34,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:34,405 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:34,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:34,406 INFO L85 PathProgramCache]: Analyzing trace with hash -441596216, now seen corresponding path program 2 times [2024-11-18 13:12:34,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:34,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248539209] [2024-11-18 13:12:34,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:12:34,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:34,476 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:12:34,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:12:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:12:35,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:35,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248539209] [2024-11-18 13:12:35,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248539209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:12:35,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562364008] [2024-11-18 13:12:35,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:12:35,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:35,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:12:35,480 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 13:12:35,481 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 13:12:35,548 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:12:35,548 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:12:35,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 13:12:35,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:12:35,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-18 13:12:35,823 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:12:35,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-18 13:12:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:12:35,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:12:35,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2024-11-18 13:12:36,023 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-18 13:12:36,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 66 [2024-11-18 13:12:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:12:36,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562364008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:12:36,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:12:36,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 26 [2024-11-18 13:12:36,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550644722] [2024-11-18 13:12:36,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:12:36,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 13:12:36,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:12:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 13:12:36,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2024-11-18 13:12:36,117 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:36,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:36,847 INFO L93 Difference]: Finished difference Result 95 states and 128 transitions. [2024-11-18 13:12:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 13:12:36,847 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-18 13:12:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:36,848 INFO L225 Difference]: With dead ends: 95 [2024-11-18 13:12:36,848 INFO L226 Difference]: Without dead ends: 80 [2024-11-18 13:12:36,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=373, Invalid=1519, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 13:12:36,850 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 118 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:12:36,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 129 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:12:36,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-18 13:12:36,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 42. [2024-11-18 13:12:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2024-11-18 13:12:36,857 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 20 [2024-11-18 13:12:36,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:36,858 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2024-11-18 13:12:36,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2024-11-18 13:12:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 13:12:36,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:36,859 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:36,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 13:12:37,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:37,065 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:37,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:37,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1096856990, now seen corresponding path program 1 times [2024-11-18 13:12:37,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:37,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421995425] [2024-11-18 13:12:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:37,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:12:37,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:37,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421995425] [2024-11-18 13:12:37,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421995425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:12:37,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243302963] [2024-11-18 13:12:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:37,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:37,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:12:37,261 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 13:12:37,262 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 13:12:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:37,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 13:12:37,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:12:37,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:12:37,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:12:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:12:37,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243302963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:12:37,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:12:37,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-18 13:12:37,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740078775] [2024-11-18 13:12:37,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:12:37,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 13:12:37,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:12:37,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 13:12:37,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:12:37,601 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:37,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:37,727 INFO L93 Difference]: Finished difference Result 132 states and 172 transitions. [2024-11-18 13:12:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:12:37,728 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-18 13:12:37,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:37,738 INFO L225 Difference]: With dead ends: 132 [2024-11-18 13:12:37,738 INFO L226 Difference]: Without dead ends: 93 [2024-11-18 13:12:37,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:12:37,740 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 55 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:12:37,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 165 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:12:37,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-18 13:12:37,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 72. [2024-11-18 13:12:37,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.267605633802817) internal successors, (90), 71 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2024-11-18 13:12:37,752 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 24 [2024-11-18 13:12:37,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:37,752 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2024-11-18 13:12:37,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2024-11-18 13:12:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-18 13:12:37,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:37,753 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:37,776 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 13:12:37,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:37,958 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:37,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:37,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1110592866, now seen corresponding path program 1 times [2024-11-18 13:12:37,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:37,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343322443] [2024-11-18 13:12:37,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:37,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:12:38,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:38,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343322443] [2024-11-18 13:12:38,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343322443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:12:38,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223878419] [2024-11-18 13:12:38,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:38,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:38,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:12:38,605 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 13:12:38,607 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 13:12:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:38,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-18 13:12:38,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:12:38,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2024-11-18 13:12:38,932 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:12:38,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2024-11-18 13:12:39,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:12:39,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 12 [2024-11-18 13:12:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:12:39,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:12:39,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 56 [2024-11-18 13:12:39,494 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-18 13:12:39,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 334 treesize of output 282 [2024-11-18 13:12:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:12:39,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223878419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:12:39,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:12:39,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 12] total 37 [2024-11-18 13:12:39,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578008092] [2024-11-18 13:12:39,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:12:39,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 13:12:39,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:12:39,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 13:12:39,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1157, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 13:12:39,590 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:46,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-18 13:12:46,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:46,932 INFO L93 Difference]: Finished difference Result 158 states and 207 transitions. [2024-11-18 13:12:46,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-18 13:12:46,933 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-18 13:12:46,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:46,935 INFO L225 Difference]: With dead ends: 158 [2024-11-18 13:12:46,935 INFO L226 Difference]: Without dead ends: 88 [2024-11-18 13:12:46,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=805, Invalid=4745, Unknown=0, NotChecked=0, Total=5550 [2024-11-18 13:12:46,938 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 129 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-18 13:12:46,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 161 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 977 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2024-11-18 13:12:46,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-18 13:12:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 45. [2024-11-18 13:12:46,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 44 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:46,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-11-18 13:12:46,945 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 25 [2024-11-18 13:12:46,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:46,946 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-11-18 13:12:46,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:46,946 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-11-18 13:12:46,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 13:12:46,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:46,947 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:46,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 13:12:47,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:47,148 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:47,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:47,149 INFO L85 PathProgramCache]: Analyzing trace with hash 820049039, now seen corresponding path program 2 times [2024-11-18 13:12:47,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:47,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510612244] [2024-11-18 13:12:47,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:12:47,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:47,179 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:12:47,179 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:12:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:12:47,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:47,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510612244] [2024-11-18 13:12:47,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510612244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:12:47,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899694956] [2024-11-18 13:12:47,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:12:47,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:47,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:12:47,717 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:12:47,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:12:47,780 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:12:47,780 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:12:47,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-18 13:12:47,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:12:47,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-18 13:12:48,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:12:48,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-18 13:12:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:12:48,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:12:48,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2024-11-18 13:12:48,292 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-18 13:12:48,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 58 [2024-11-18 13:12:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:12:48,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899694956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:12:48,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:12:48,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 26 [2024-11-18 13:12:48,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745942177] [2024-11-18 13:12:48,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:12:48,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 13:12:48,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:12:48,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 13:12:48,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-11-18 13:12:48,320 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:48,868 INFO L93 Difference]: Finished difference Result 137 states and 175 transitions. [2024-11-18 13:12:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 13:12:48,868 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-18 13:12:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:48,869 INFO L225 Difference]: With dead ends: 137 [2024-11-18 13:12:48,869 INFO L226 Difference]: Without dead ends: 115 [2024-11-18 13:12:48,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 13:12:48,871 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 157 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:12:48,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 316 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:12:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-18 13:12:48,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 71. [2024-11-18 13:12:48,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:48,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 90 transitions. [2024-11-18 13:12:48,883 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 90 transitions. Word has length 32 [2024-11-18 13:12:48,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:48,884 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 90 transitions. [2024-11-18 13:12:48,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:48,884 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 90 transitions. [2024-11-18 13:12:48,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 13:12:48,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:48,885 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:48,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 13:12:49,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:49,086 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:49,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:49,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1076471781, now seen corresponding path program 3 times [2024-11-18 13:12:49,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:49,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758937804] [2024-11-18 13:12:49,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:12:49,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:49,109 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:12:49,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:12:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:12:49,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:49,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758937804] [2024-11-18 13:12:49,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758937804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:12:49,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603927749] [2024-11-18 13:12:49,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:12:49,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:49,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:12:49,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:12:49,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:12:49,368 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:12:49,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:12:49,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 13:12:49,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:12:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:12:49,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:12:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:12:49,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603927749] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:12:49,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:12:49,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-18 13:12:49,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784276514] [2024-11-18 13:12:49,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:12:49,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 13:12:49,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:12:49,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 13:12:49,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-18 13:12:49,644 INFO L87 Difference]: Start difference. First operand 71 states and 90 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:49,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:49,803 INFO L93 Difference]: Finished difference Result 142 states and 183 transitions. [2024-11-18 13:12:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:12:49,805 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-18 13:12:49,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:49,806 INFO L225 Difference]: With dead ends: 142 [2024-11-18 13:12:49,806 INFO L226 Difference]: Without dead ends: 126 [2024-11-18 13:12:49,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-11-18 13:12:49,807 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 51 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:12:49,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 331 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:12:49,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-18 13:12:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 100. [2024-11-18 13:12:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.303030303030303) internal successors, (129), 99 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:49,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 129 transitions. [2024-11-18 13:12:49,819 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 129 transitions. Word has length 36 [2024-11-18 13:12:49,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:49,819 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 129 transitions. [2024-11-18 13:12:49,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:49,819 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 129 transitions. [2024-11-18 13:12:49,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 13:12:49,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:49,820 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:49,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 13:12:50,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:50,025 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:50,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 948644129, now seen corresponding path program 1 times [2024-11-18 13:12:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:50,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856252383] [2024-11-18 13:12:50,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:50,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:12:50,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:50,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856252383] [2024-11-18 13:12:50,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856252383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:12:50,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066558229] [2024-11-18 13:12:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:50,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:50,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:12:50,840 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:12:50,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 13:12:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:50,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-18 13:12:50,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:12:51,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2024-11-18 13:12:51,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:12:51,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2024-11-18 13:12:51,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:12:51,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2024-11-18 13:12:51,499 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:12:51,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:12:51,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2024-11-18 13:12:51,948 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2024-11-18 13:12:51,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 252 treesize of output 216 [2024-11-18 13:12:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:12:52,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066558229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:12:52,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:12:52,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 15] total 43 [2024-11-18 13:12:52,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975567682] [2024-11-18 13:12:52,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:12:52,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-18 13:12:52,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:12:52,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-18 13:12:52,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1588, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 13:12:52,105 INFO L87 Difference]: Start difference. First operand 100 states and 129 transitions. Second operand has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 43 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:54,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:54,337 INFO L93 Difference]: Finished difference Result 245 states and 325 transitions. [2024-11-18 13:12:54,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-18 13:12:54,337 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 43 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-18 13:12:54,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:54,338 INFO L225 Difference]: With dead ends: 245 [2024-11-18 13:12:54,339 INFO L226 Difference]: Without dead ends: 166 [2024-11-18 13:12:54,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1825 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=788, Invalid=5374, Unknown=0, NotChecked=0, Total=6162 [2024-11-18 13:12:54,343 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 264 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 13:12:54,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 345 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 13:12:54,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-18 13:12:54,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 102. [2024-11-18 13:12:54,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2673267326732673) internal successors, (128), 101 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 128 transitions. [2024-11-18 13:12:54,367 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 128 transitions. Word has length 37 [2024-11-18 13:12:54,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:54,367 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 128 transitions. [2024-11-18 13:12:54,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 43 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 128 transitions. [2024-11-18 13:12:54,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 13:12:54,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:54,369 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:54,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 13:12:54,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:54,570 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:54,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:54,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2113228104, now seen corresponding path program 4 times [2024-11-18 13:12:54,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:54,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409777953] [2024-11-18 13:12:54,571 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:12:54,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:54,596 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:12:54,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:12:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 13:12:54,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:54,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409777953] [2024-11-18 13:12:54,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409777953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:12:54,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49035674] [2024-11-18 13:12:54,772 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:12:54,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:54,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:12:54,774 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:12:54,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 13:12:54,852 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:12:54,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:12:54,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 13:12:54,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:12:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 13:12:54,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:12:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 13:12:55,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49035674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:12:55,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:12:55,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-18 13:12:55,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882433975] [2024-11-18 13:12:55,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:12:55,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 13:12:55,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:12:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 13:12:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-18 13:12:55,177 INFO L87 Difference]: Start difference. First operand 102 states and 128 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:55,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:55,324 INFO L93 Difference]: Finished difference Result 224 states and 290 transitions. [2024-11-18 13:12:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:12:55,324 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-18 13:12:55,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:55,325 INFO L225 Difference]: With dead ends: 224 [2024-11-18 13:12:55,325 INFO L226 Difference]: Without dead ends: 168 [2024-11-18 13:12:55,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-18 13:12:55,326 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 93 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:12:55,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 455 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:12:55,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-18 13:12:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2024-11-18 13:12:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.2348484848484849) internal successors, (163), 132 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2024-11-18 13:12:55,347 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 42 [2024-11-18 13:12:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:55,348 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2024-11-18 13:12:55,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:12:55,348 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2024-11-18 13:12:55,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 13:12:55,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:55,352 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:55,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 13:12:55,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 13:12:55,553 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:55,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:55,553 INFO L85 PathProgramCache]: Analyzing trace with hash -45413167, now seen corresponding path program 1 times [2024-11-18 13:12:55,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:55,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758061817] [2024-11-18 13:12:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:55,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:12:56,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:56,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758061817] [2024-11-18 13:12:56,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758061817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:12:56,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556337228] [2024-11-18 13:12:56,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:56,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:56,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:12:56,968 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:12:56,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 13:12:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:57,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-18 13:12:57,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:12:57,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:12:57,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 18 [2024-11-18 13:12:57,278 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:12:57,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2024-11-18 13:12:57,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:12:57,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 28 [2024-11-18 13:12:57,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:12:57,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:12:57,566 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2024-11-18 13:12:57,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 34 [2024-11-18 13:12:57,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:12:57,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-18 13:12:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:12:57,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:13:06,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 79 [2024-11-18 13:13:06,990 INFO L349 Elim1Store]: treesize reduction 24, result has 27.3 percent of original size [2024-11-18 13:13:06,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 491 treesize of output 409 [2024-11-18 13:13:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:13:15,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556337228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:13:15,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:13:15,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 20] total 52 [2024-11-18 13:13:15,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810248607] [2024-11-18 13:13:15,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:13:15,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-18 13:13:15,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:13:15,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-18 13:13:15,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=2312, Unknown=4, NotChecked=0, Total=2652 [2024-11-18 13:13:15,060 INFO L87 Difference]: Start difference. First operand 133 states and 163 transitions. Second operand has 52 states, 52 states have (on average 1.8846153846153846) internal successors, (98), 52 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:20,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-18 13:13:25,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-18 13:13:29,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-18 13:13:33,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-18 13:13:37,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-18 13:13:41,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-18 13:13:45,220 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse6 (+ |c_ULTIMATE.start_main_~#v~0#1.offset| 4)) (.cse7 (+ |c_ULTIMATE.start_main_~#v~0#1.offset| 8)) (.cse8 (+ .cse1 |c_ULTIMATE.start_main_~#v~0#1.offset| 4)) (.cse0 (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#v~0#1.base|))) (and (= |c_ULTIMATE.start_main_~j~0#1| 2) (or (< |c_ULTIMATE.start_main_~key~0#1| (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#v~0#1.offset|))) (< 2 |c_ULTIMATE.start_main_~j~0#1|) (not |c_ULTIMATE.start_main_#t~short9#1|) (< |c_ULTIMATE.start_main_~j~0#1| 1) (forall ((v_ArrVal_221 Int) (v_ArrVal_219 Int)) (let ((.cse3 (* |c_ULTIMATE.start_main_~j~0#1| 4))) (let ((.cse2 (store .cse0 .cse8 |c_ULTIMATE.start_main_~key~0#1|)) (.cse4 (+ |c_ULTIMATE.start_main_~#v~0#1.offset| .cse3))) (or (< (select .cse2 (+ |c_ULTIMATE.start_main_~#v~0#1.offset| (- 4) .cse3)) v_ArrVal_221) (< v_ArrVal_219 (select .cse2 .cse4)) (let ((.cse5 (store (store .cse2 (+ |c_ULTIMATE.start_main_~#v~0#1.offset| .cse3 4) v_ArrVal_219) .cse4 v_ArrVal_221))) (< (select .cse5 .cse6) (+ (select .cse5 .cse7) 1)))))))) (let ((.cse9 (store .cse0 (+ .cse1 4) |c_ULTIMATE.start_main_~key~0#1|))) (<= (select .cse9 4) (select .cse9 8))) (forall ((|ULTIMATE.start_main_~key~0#1| Int)) (let ((.cse10 (store .cse0 .cse8 |ULTIMATE.start_main_~key~0#1|))) (< (select .cse10 .cse6) (+ (select .cse10 .cse7) 1)))) (<= (select .cse0 4) (select .cse0 8)) (= |c_ULTIMATE.start_main_~#v~0#1.offset| 0)))) is different from false