./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-41.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-41.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 66faedc76e2888a747bab206dd9951b65d0513a976e7d390b67897d185d819f3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:43:21,628 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:43:21,674 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:43:21,680 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:43:21,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:43:21,699 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:43:21,699 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:43:21,699 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:43:21,700 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:43:21,701 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:43:21,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:43:21,702 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:43:21,702 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:43:21,702 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:43:21,704 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:43:21,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:43:21,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:43:21,705 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:43:21,705 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:43:21,705 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:43:21,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:43:21,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:43:21,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:43:21,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:43:21,706 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:43:21,706 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:43:21,706 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:43:21,707 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:43:21,707 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:43:21,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:43:21,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:43:21,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:43:21,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:43:21,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:43:21,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:43:21,709 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:43:21,709 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:43:21,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:43:21,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:43:21,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:43:21,710 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:43:21,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:43:21,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66faedc76e2888a747bab206dd9951b65d0513a976e7d390b67897d185d819f3 [2024-11-18 23:43:21,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:43:21,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:43:21,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:43:21,946 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:43:21,946 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:43:21,947 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-41.i [2024-11-18 23:43:23,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:43:23,334 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:43:23,335 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-41.i [2024-11-18 23:43:23,345 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eb52a295/23d8776c87c849dda3782e91d24c48a4/FLAG6838b8c48 [2024-11-18 23:43:23,683 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eb52a295/23d8776c87c849dda3782e91d24c48a4 [2024-11-18 23:43:23,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:43:23,686 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:43:23,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:43:23,687 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:43:23,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:43:23,693 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:43:23" (1/1) ... [2024-11-18 23:43:23,694 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3edf6aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:23, skipping insertion in model container [2024-11-18 23:43:23,694 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:43:23" (1/1) ... [2024-11-18 23:43:23,724 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:43:23,866 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-41.i[916,929] [2024-11-18 23:43:23,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:43:23,986 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:43:23,996 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-41.i[916,929] [2024-11-18 23:43:24,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:43:24,077 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:43:24,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:24 WrapperNode [2024-11-18 23:43:24,078 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:43:24,079 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:43:24,079 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:43:24,080 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:43:24,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:24" (1/1) ... [2024-11-18 23:43:24,096 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:24" (1/1) ... [2024-11-18 23:43:24,138 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 441 [2024-11-18 23:43:24,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:43:24,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:43:24,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:43:24,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:43:24,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:24" (1/1) ... [2024-11-18 23:43:24,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:24" (1/1) ... [2024-11-18 23:43:24,158 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:24" (1/1) ... [2024-11-18 23:43:24,197 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 23:43:24,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:24" (1/1) ... [2024-11-18 23:43:24,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:24" (1/1) ... [2024-11-18 23:43:24,212 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:24" (1/1) ... [2024-11-18 23:43:24,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:24" (1/1) ... [2024-11-18 23:43:24,220 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:24" (1/1) ... [2024-11-18 23:43:24,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:24" (1/1) ... [2024-11-18 23:43:24,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:43:24,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:43:24,239 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:43:24,239 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:43:24,240 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:24" (1/1) ... [2024-11-18 23:43:24,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:43:24,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:43:24,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 23:43:24,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 23:43:24,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:43:24,303 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:43:24,303 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:43:24,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:43:24,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:43:24,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:43:24,377 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:43:24,379 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:43:24,954 INFO L? ?]: Removed 57 outVars from TransFormulas that were not future-live. [2024-11-18 23:43:24,954 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:43:24,969 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:43:24,970 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:43:24,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:43:24 BoogieIcfgContainer [2024-11-18 23:43:24,970 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:43:24,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:43:24,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:43:24,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:43:24,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:43:23" (1/3) ... [2024-11-18 23:43:24,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c48ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:43:24, skipping insertion in model container [2024-11-18 23:43:24,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:43:24" (2/3) ... [2024-11-18 23:43:24,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c48ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:43:24, skipping insertion in model container [2024-11-18 23:43:24,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:43:24" (3/3) ... [2024-11-18 23:43:24,978 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-41.i [2024-11-18 23:43:24,990 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:43:24,990 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:43:25,042 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:43:25,048 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;@38b97fb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:43:25,048 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:43:25,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 138 states have (on average 1.4927536231884058) internal successors, (206), 139 states have internal predecessors, (206), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-18 23:43:25,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-18 23:43:25,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:25,074 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:25,075 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:25,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:25,079 INFO L85 PathProgramCache]: Analyzing trace with hash 315284752, now seen corresponding path program 1 times [2024-11-18 23:43:25,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:25,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227957626] [2024-11-18 23:43:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:25,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:25,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-18 23:43:25,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:25,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227957626] [2024-11-18 23:43:25,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227957626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:43:25,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096905533] [2024-11-18 23:43:25,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:25,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:43:25,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:43:25,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:43:25,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:43:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:25,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:43:25,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:43:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-18 23:43:25,720 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:43:25,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096905533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:43:25,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:43:25,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:43:25,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954957832] [2024-11-18 23:43:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:43:25,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:43:25,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:25,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:43:25,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:43:25,750 INFO L87 Difference]: Start difference. First operand has 186 states, 138 states have (on average 1.4927536231884058) internal successors, (206), 139 states have internal predecessors, (206), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2024-11-18 23:43:25,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:25,787 INFO L93 Difference]: Finished difference Result 365 states and 631 transitions. [2024-11-18 23:43:25,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:43:25,789 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) Word has length 302 [2024-11-18 23:43:25,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:25,795 INFO L225 Difference]: With dead ends: 365 [2024-11-18 23:43:25,795 INFO L226 Difference]: Without dead ends: 182 [2024-11-18 23:43:25,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:43:25,801 INFO L432 NwaCegarLoop]: 288 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, 288 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:25,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:43:25,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-18 23:43:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-18 23:43:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 135 states have (on average 1.4666666666666666) internal successors, (198), 135 states have internal predecessors, (198), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-18 23:43:25,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 288 transitions. [2024-11-18 23:43:25,844 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 288 transitions. Word has length 302 [2024-11-18 23:43:25,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:25,845 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 288 transitions. [2024-11-18 23:43:25,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2024-11-18 23:43:25,845 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 288 transitions. [2024-11-18 23:43:25,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-18 23:43:25,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:25,851 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:25,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:43:26,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:43:26,052 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:26,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:26,053 INFO L85 PathProgramCache]: Analyzing trace with hash 576366278, now seen corresponding path program 1 times [2024-11-18 23:43:26,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:26,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888626169] [2024-11-18 23:43:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:26,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:26,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-18 23:43:26,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:26,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888626169] [2024-11-18 23:43:26,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888626169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:43:26,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:43:26,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:43:26,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668838280] [2024-11-18 23:43:26,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:43:26,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:43:26,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:26,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:43:26,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:43:26,337 INFO L87 Difference]: Start difference. First operand 182 states and 288 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-18 23:43:26,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:26,458 INFO L93 Difference]: Finished difference Result 468 states and 737 transitions. [2024-11-18 23:43:26,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:43:26,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 302 [2024-11-18 23:43:26,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:26,462 INFO L225 Difference]: With dead ends: 468 [2024-11-18 23:43:26,462 INFO L226 Difference]: Without dead ends: 289 [2024-11-18 23:43:26,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:43:26,466 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 169 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:26,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 528 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:43:26,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-18 23:43:26,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 286. [2024-11-18 23:43:26,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 218 states have (on average 1.4403669724770642) internal successors, (314), 219 states have internal predecessors, (314), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-18 23:43:26,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 444 transitions. [2024-11-18 23:43:26,504 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 444 transitions. Word has length 302 [2024-11-18 23:43:26,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:26,506 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 444 transitions. [2024-11-18 23:43:26,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-18 23:43:26,506 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 444 transitions. [2024-11-18 23:43:26,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-18 23:43:26,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:26,511 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:26,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:43:26,512 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:26,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:26,512 INFO L85 PathProgramCache]: Analyzing trace with hash -498459634, now seen corresponding path program 1 times [2024-11-18 23:43:26,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026031802] [2024-11-18 23:43:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-18 23:43:26,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:26,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026031802] [2024-11-18 23:43:26,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026031802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:43:26,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:43:26,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:43:26,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202222631] [2024-11-18 23:43:26,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:43:26,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:43:26,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:26,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:43:26,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:43:26,783 INFO L87 Difference]: Start difference. First operand 286 states and 444 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-18 23:43:26,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:26,810 INFO L93 Difference]: Finished difference Result 570 states and 887 transitions. [2024-11-18 23:43:26,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:43:26,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 304 [2024-11-18 23:43:26,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:26,819 INFO L225 Difference]: With dead ends: 570 [2024-11-18 23:43:26,820 INFO L226 Difference]: Without dead ends: 287 [2024-11-18 23:43:26,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:43:26,821 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 0 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:26,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 567 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:43:26,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-18 23:43:26,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-18 23:43:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 219 states have (on average 1.4383561643835616) internal successors, (315), 220 states have internal predecessors, (315), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-18 23:43:26,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 445 transitions. [2024-11-18 23:43:26,857 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 445 transitions. Word has length 304 [2024-11-18 23:43:26,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:26,858 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 445 transitions. [2024-11-18 23:43:26,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-18 23:43:26,858 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 445 transitions. [2024-11-18 23:43:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-18 23:43:26,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:26,861 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:26,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:43:26,861 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:26,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:26,862 INFO L85 PathProgramCache]: Analyzing trace with hash 395026704, now seen corresponding path program 1 times [2024-11-18 23:43:26,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:26,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582710232] [2024-11-18 23:43:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:26,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-18 23:43:27,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:27,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582710232] [2024-11-18 23:43:27,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582710232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:43:27,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:43:27,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:43:27,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205510301] [2024-11-18 23:43:27,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:43:27,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:43:27,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:27,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:43:27,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:43:27,102 INFO L87 Difference]: Start difference. First operand 287 states and 445 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-18 23:43:27,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:27,125 INFO L93 Difference]: Finished difference Result 571 states and 887 transitions. [2024-11-18 23:43:27,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:43:27,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 304 [2024-11-18 23:43:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:27,129 INFO L225 Difference]: With dead ends: 571 [2024-11-18 23:43:27,131 INFO L226 Difference]: Without dead ends: 287 [2024-11-18 23:43:27,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:43:27,133 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 0 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:27,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 567 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:43:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-18 23:43:27,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-18 23:43:27,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 219 states have (on average 1.4337899543378996) internal successors, (314), 220 states have internal predecessors, (314), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-18 23:43:27,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 444 transitions. [2024-11-18 23:43:27,152 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 444 transitions. Word has length 304 [2024-11-18 23:43:27,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:27,154 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 444 transitions. [2024-11-18 23:43:27,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-18 23:43:27,154 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 444 transitions. [2024-11-18 23:43:27,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-11-18 23:43:27,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:27,157 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:27,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:43:27,157 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:27,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:27,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1512800748, now seen corresponding path program 1 times [2024-11-18 23:43:27,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:27,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931417149] [2024-11-18 23:43:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:27,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 117 proven. 15 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-18 23:43:27,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:27,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931417149] [2024-11-18 23:43:27,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931417149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:43:27,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728324430] [2024-11-18 23:43:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:27,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:43:28,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:43:28,002 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:43:28,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 23:43:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:28,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 23:43:28,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:43:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-18 23:43:28,385 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:43:28,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728324430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:43:28,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:43:28,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-18 23:43:28,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805431863] [2024-11-18 23:43:28,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:43:28,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:43:28,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:28,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:43:28,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:43:28,389 INFO L87 Difference]: Start difference. First operand 287 states and 444 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-18 23:43:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:28,936 INFO L93 Difference]: Finished difference Result 1075 states and 1665 transitions. [2024-11-18 23:43:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:43:28,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 305 [2024-11-18 23:43:28,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:28,944 INFO L225 Difference]: With dead ends: 1075 [2024-11-18 23:43:28,945 INFO L226 Difference]: Without dead ends: 791 [2024-11-18 23:43:28,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:43:28,946 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 483 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:28,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 1172 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:43:28,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-18 23:43:28,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 421. [2024-11-18 23:43:28,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 353 states have (on average 1.5042492917847026) internal successors, (531), 354 states have internal predecessors, (531), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-18 23:43:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 661 transitions. [2024-11-18 23:43:28,983 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 661 transitions. Word has length 305 [2024-11-18 23:43:28,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:28,984 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 661 transitions. [2024-11-18 23:43:28,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-18 23:43:28,985 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 661 transitions. [2024-11-18 23:43:28,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-11-18 23:43:28,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:28,989 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:29,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 23:43:29,191 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 23:43:29,192 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:29,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1935502574, now seen corresponding path program 1 times [2024-11-18 23:43:29,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:29,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696227088] [2024-11-18 23:43:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:29,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 117 proven. 15 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-18 23:43:29,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:29,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696227088] [2024-11-18 23:43:29,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696227088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:43:29,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665966427] [2024-11-18 23:43:29,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:29,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:43:29,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:43:29,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:43:29,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 23:43:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:29,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-18 23:43:29,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:43:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2205 proven. 69 refuted. 0 times theorem prover too weak. 1686 trivial. 0 not checked. [2024-11-18 23:43:30,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:43:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 117 proven. 15 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2024-11-18 23:43:30,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665966427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:43:30,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:43:30,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 8] total 20 [2024-11-18 23:43:30,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490117549] [2024-11-18 23:43:30,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:43:30,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 23:43:30,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:30,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 23:43:30,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-11-18 23:43:30,818 INFO L87 Difference]: Start difference. First operand 421 states and 661 transitions. Second operand has 20 states, 20 states have (on average 7.2) internal successors, (144), 19 states have internal predecessors, (144), 6 states have call successors, (67), 4 states have call predecessors, (67), 7 states have return successors, (69), 6 states have call predecessors, (69), 6 states have call successors, (69) [2024-11-18 23:43:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:34,770 INFO L93 Difference]: Finished difference Result 2437 states and 3677 transitions. [2024-11-18 23:43:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-18 23:43:34,771 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.2) internal successors, (144), 19 states have internal predecessors, (144), 6 states have call successors, (67), 4 states have call predecessors, (67), 7 states have return successors, (69), 6 states have call predecessors, (69), 6 states have call successors, (69) Word has length 305 [2024-11-18 23:43:34,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:34,780 INFO L225 Difference]: With dead ends: 2437 [2024-11-18 23:43:34,780 INFO L226 Difference]: Without dead ends: 2019 [2024-11-18 23:43:34,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3673 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2107, Invalid=8605, Unknown=0, NotChecked=0, Total=10712 [2024-11-18 23:43:34,785 INFO L432 NwaCegarLoop]: 518 mSDtfsCounter, 2166 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 2631 mSolverCounterSat, 1115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 3746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 2631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:34,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2194 Valid, 3125 Invalid, 3746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1115 Valid, 2631 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 23:43:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2024-11-18 23:43:34,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1644. [2024-11-18 23:43:34,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1261 states have (on average 1.4099920697858843) internal successors, (1778), 1271 states have internal predecessors, (1778), 352 states have call successors, (352), 30 states have call predecessors, (352), 30 states have return successors, (352), 342 states have call predecessors, (352), 352 states have call successors, (352) [2024-11-18 23:43:34,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2482 transitions. [2024-11-18 23:43:34,894 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2482 transitions. Word has length 305 [2024-11-18 23:43:34,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:34,894 INFO L471 AbstractCegarLoop]: Abstraction has 1644 states and 2482 transitions. [2024-11-18 23:43:34,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.2) internal successors, (144), 19 states have internal predecessors, (144), 6 states have call successors, (67), 4 states have call predecessors, (67), 7 states have return successors, (69), 6 states have call predecessors, (69), 6 states have call successors, (69) [2024-11-18 23:43:34,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2482 transitions. [2024-11-18 23:43:34,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-18 23:43:34,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:34,899 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:34,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 23:43:35,099 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 23:43:35,100 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:35,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:35,101 INFO L85 PathProgramCache]: Analyzing trace with hash 924691364, now seen corresponding path program 1 times [2024-11-18 23:43:35,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:35,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925344141] [2024-11-18 23:43:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:35,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:43:35,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201922338] [2024-11-18 23:43:35,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:35,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:43:35,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:43:35,775 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:43:35,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 23:43:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:35,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 23:43:35,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:43:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2205 proven. 69 refuted. 0 times theorem prover too weak. 1686 trivial. 0 not checked. [2024-11-18 23:43:36,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:43:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-11-18 23:43:36,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:36,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925344141] [2024-11-18 23:43:36,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 23:43:36,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201922338] [2024-11-18 23:43:36,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201922338] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 23:43:36,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:43:36,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2024-11-18 23:43:36,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422020621] [2024-11-18 23:43:36,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:43:36,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:43:36,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:36,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:43:36,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:43:36,651 INFO L87 Difference]: Start difference. First operand 1644 states and 2482 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-18 23:43:40,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:40,507 INFO L93 Difference]: Finished difference Result 3396 states and 5146 transitions. [2024-11-18 23:43:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:43:40,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 306 [2024-11-18 23:43:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:40,515 INFO L225 Difference]: With dead ends: 3396 [2024-11-18 23:43:40,515 INFO L226 Difference]: Without dead ends: 1755 [2024-11-18 23:43:40,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-18 23:43:40,519 INFO L432 NwaCegarLoop]: 444 mSDtfsCounter, 295 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:40,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 975 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 296 Invalid, 3 Unknown, 0 Unchecked, 3.7s Time] [2024-11-18 23:43:40,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2024-11-18 23:43:40,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1747. [2024-11-18 23:43:40,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1364 states have (on average 1.4244868035190617) internal successors, (1943), 1374 states have internal predecessors, (1943), 352 states have call successors, (352), 30 states have call predecessors, (352), 30 states have return successors, (352), 342 states have call predecessors, (352), 352 states have call successors, (352) [2024-11-18 23:43:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2647 transitions. [2024-11-18 23:43:40,663 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2647 transitions. Word has length 306 [2024-11-18 23:43:40,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:40,664 INFO L471 AbstractCegarLoop]: Abstraction has 1747 states and 2647 transitions. [2024-11-18 23:43:40,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2024-11-18 23:43:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2647 transitions. [2024-11-18 23:43:40,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-18 23:43:40,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:40,669 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:40,683 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 23:43:40,870 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 23:43:40,871 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:40,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:40,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1347393190, now seen corresponding path program 1 times [2024-11-18 23:43:40,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:40,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559099452] [2024-11-18 23:43:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:40,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:43:41,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485495885] [2024-11-18 23:43:41,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:41,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:43:41,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:43:41,121 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 23:43:41,122 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 23:43:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:41,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-18 23:43:41,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:43:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2869 proven. 267 refuted. 0 times theorem prover too weak. 824 trivial. 0 not checked. [2024-11-18 23:43:43,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:43:47,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:47,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559099452] [2024-11-18 23:43:47,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 23:43:47,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485495885] [2024-11-18 23:43:47,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485495885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:43:47,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:43:47,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2024-11-18 23:43:47,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616274331] [2024-11-18 23:43:47,921 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 23:43:47,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 23:43:47,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:47,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 23:43:47,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=874, Unknown=12, NotChecked=0, Total=1190 [2024-11-18 23:43:47,923 INFO L87 Difference]: Start difference. First operand 1747 states and 2647 transitions. Second operand has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 20 states have internal predecessors, (111), 6 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (45), 6 states have call predecessors, (45), 6 states have call successors, (45) [2024-11-18 23:43:56,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 23:44:01,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-18 23:44:56,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:56,906 INFO L93 Difference]: Finished difference Result 5268 states and 7732 transitions. [2024-11-18 23:44:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-18 23:44:56,907 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 20 states have internal predecessors, (111), 6 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (45), 6 states have call predecessors, (45), 6 states have call successors, (45) Word has length 306 [2024-11-18 23:44:56,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:56,919 INFO L225 Difference]: With dead ends: 5268 [2024-11-18 23:44:56,920 INFO L226 Difference]: Without dead ends: 3524 [2024-11-18 23:44:56,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=1573, Invalid=4259, Unknown=20, NotChecked=0, Total=5852 [2024-11-18 23:44:56,924 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 1309 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 142 mSolverCounterUnsat, 187 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 3428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 187 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:56,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 2669 Invalid, 3428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 3099 Invalid, 187 Unknown, 0 Unchecked, 52.2s Time] [2024-11-18 23:44:56,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2024-11-18 23:44:57,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 1656. [2024-11-18 23:44:57,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1337 states have (on average 1.4210919970082274) internal successors, (1900), 1345 states have internal predecessors, (1900), 266 states have call successors, (266), 52 states have call predecessors, (266), 52 states have return successors, (266), 258 states have call predecessors, (266), 266 states have call successors, (266) [2024-11-18 23:44:57,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2432 transitions. [2024-11-18 23:44:57,063 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2432 transitions. Word has length 306 [2024-11-18 23:44:57,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:57,064 INFO L471 AbstractCegarLoop]: Abstraction has 1656 states and 2432 transitions. [2024-11-18 23:44:57,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 20 states have internal predecessors, (111), 6 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (45), 6 states have call predecessors, (45), 6 states have call successors, (45) [2024-11-18 23:44:57,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2432 transitions. [2024-11-18 23:44:57,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-18 23:44:57,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:57,067 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:57,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 23:44:57,268 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 23:44:57,269 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:57,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:57,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1561370712, now seen corresponding path program 1 times [2024-11-18 23:44:57,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:57,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138562971] [2024-11-18 23:44:57,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:57,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:44:57,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076107998] [2024-11-18 23:44:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:57,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:57,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:57,585 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 23:44:57,590 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 23:44:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 23:44:58,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.