./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_fillercode_fillercodestructure_filler-ps-cn_file-10.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 046473fab28f9389ecc0d44699a462777c1ef1278031560923e70e589643d659 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 09:19:05,861 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 09:19:05,922 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 09:19:05,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 09:19:05,927 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 09:19:05,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 09:19:05,952 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 09:19:05,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 09:19:05,953 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 09:19:05,954 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 09:19:05,954 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 09:19:05,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 09:19:05,955 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 09:19:05,956 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 09:19:05,957 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 09:19:05,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 09:19:05,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 09:19:05,958 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 09:19:05,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 09:19:05,958 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 09:19:05,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 09:19:05,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 09:19:05,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 09:19:05,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 09:19:05,961 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 09:19:05,961 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 09:19:05,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 09:19:05,961 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 09:19:05,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 09:19:05,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 09:19:05,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 09:19:05,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 09:19:05,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 09:19:05,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 09:19:05,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 09:19:05,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 09:19:05,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 09:19:05,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 09:19:05,967 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 09:19:05,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 09:19:05,967 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 09:19:05,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 09:19:05,971 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 046473fab28f9389ecc0d44699a462777c1ef1278031560923e70e589643d659 [2024-11-22 09:19:06,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 09:19:06,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 09:19:06,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 09:19:06,214 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 09:19:06,215 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 09:19:06,216 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-10.i [2024-11-22 09:19:07,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 09:19:07,752 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 09:19:07,752 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-10.i [2024-11-22 09:19:07,760 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ba23076/7fe60147577e4e979a5f43b3ad49fc09/FLAG7482c9886 [2024-11-22 09:19:08,154 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ba23076/7fe60147577e4e979a5f43b3ad49fc09 [2024-11-22 09:19:08,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 09:19:08,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 09:19:08,164 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 09:19:08,164 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 09:19:08,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 09:19:08,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:19:08" (1/1) ... [2024-11-22 09:19:08,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7b892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08, skipping insertion in model container [2024-11-22 09:19:08,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:19:08" (1/1) ... [2024-11-22 09:19:08,199 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 09:19:08,360 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_fillercode_fillercodestructure_filler-ps-cn_file-10.i[919,932] [2024-11-22 09:19:08,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 09:19:08,478 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 09:19:08,490 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_fillercode_fillercodestructure_filler-ps-cn_file-10.i[919,932] [2024-11-22 09:19:08,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 09:19:08,567 INFO L204 MainTranslator]: Completed translation [2024-11-22 09:19:08,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08 WrapperNode [2024-11-22 09:19:08,568 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 09:19:08,569 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 09:19:08,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 09:19:08,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 09:19:08,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08" (1/1) ... [2024-11-22 09:19:08,592 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08" (1/1) ... [2024-11-22 09:19:08,670 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 337 [2024-11-22 09:19:08,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 09:19:08,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 09:19:08,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 09:19:08,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 09:19:08,681 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08" (1/1) ... [2024-11-22 09:19:08,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08" (1/1) ... [2024-11-22 09:19:08,685 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08" (1/1) ... [2024-11-22 09:19:08,749 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]. [2024-11-22 09:19:08,749 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08" (1/1) ... [2024-11-22 09:19:08,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08" (1/1) ... [2024-11-22 09:19:08,773 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08" (1/1) ... [2024-11-22 09:19:08,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08" (1/1) ... [2024-11-22 09:19:08,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08" (1/1) ... [2024-11-22 09:19:08,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08" (1/1) ... [2024-11-22 09:19:08,788 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 09:19:08,789 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 09:19:08,789 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 09:19:08,789 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 09:19:08,790 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08" (1/1) ... [2024-11-22 09:19:08,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 09:19:08,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 09:19:08,829 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) [2024-11-22 09:19:08,839 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 [2024-11-22 09:19:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 09:19:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 09:19:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 09:19:08,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 09:19:08,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 09:19:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 09:19:08,970 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 09:19:08,972 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 09:19:09,460 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-22 09:19:09,460 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 09:19:09,484 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 09:19:09,485 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 09:19:09,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:19:09 BoogieIcfgContainer [2024-11-22 09:19:09,486 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 09:19:09,488 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 09:19:09,489 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 09:19:09,492 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 09:19:09,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:19:08" (1/3) ... [2024-11-22 09:19:09,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1366507c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:19:09, skipping insertion in model container [2024-11-22 09:19:09,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:08" (2/3) ... [2024-11-22 09:19:09,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1366507c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:19:09, skipping insertion in model container [2024-11-22 09:19:09,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:19:09" (3/3) ... [2024-11-22 09:19:09,495 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-10.i [2024-11-22 09:19:09,508 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 09:19:09,508 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 09:19:09,582 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 09:19:09,591 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;@3f78456a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 09:19:09,592 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 09:19:09,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 97 states have (on average 1.4123711340206186) internal successors, (137), 98 states have internal predecessors, (137), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 09:19:09,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-22 09:19:09,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:19:09,627 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:19:09,628 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:19:09,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:19:09,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1857015494, now seen corresponding path program 1 times [2024-11-22 09:19:09,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:19:09,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464904595] [2024-11-22 09:19:09,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:19:09,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:19:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:19:10,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-11-22 09:19:10,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 09:19:10,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464904595] [2024-11-22 09:19:10,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464904595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 09:19:10,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141544479] [2024-11-22 09:19:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:19:10,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 09:19:10,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 09:19:10,066 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) [2024-11-22 09:19:10,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 09:19:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:19:10,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 09:19:10,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 09:19:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-11-22 09:19:10,328 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 09:19:10,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141544479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 09:19:10,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 09:19:10,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 09:19:10,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263328050] [2024-11-22 09:19:10,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 09:19:10,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 09:19:10,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 09:19:10,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 09:19:10,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 09:19:10,439 INFO L87 Difference]: Start difference. First operand has 148 states, 97 states have (on average 1.4123711340206186) internal successors, (137), 98 states have internal predecessors, (137), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-22 09:19:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 09:19:10,497 INFO L93 Difference]: Finished difference Result 289 states and 508 transitions. [2024-11-22 09:19:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 09:19:10,499 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 296 [2024-11-22 09:19:10,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 09:19:10,509 INFO L225 Difference]: With dead ends: 289 [2024-11-22 09:19:10,509 INFO L226 Difference]: Without dead ends: 144 [2024-11-22 09:19:10,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 09:19:10,517 INFO L432 NwaCegarLoop]: 226 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, 226 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 [2024-11-22 09:19:10,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 09:19:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-22 09:19:10,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-22 09:19:10,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 94 states have (on average 1.3829787234042554) internal successors, (130), 94 states have internal predecessors, (130), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 09:19:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 226 transitions. [2024-11-22 09:19:10,610 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 226 transitions. Word has length 296 [2024-11-22 09:19:10,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 09:19:10,610 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 226 transitions. [2024-11-22 09:19:10,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-22 09:19:10,611 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 226 transitions. [2024-11-22 09:19:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-22 09:19:10,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:19:10,624 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:19:10,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 09:19:10,824 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 [2024-11-22 09:19:10,825 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:19:10,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:19:10,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1341157954, now seen corresponding path program 1 times [2024-11-22 09:19:10,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:19:10,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737009075] [2024-11-22 09:19:10,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:19:10,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:19:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:19:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-22 09:19:11,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 09:19:11,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737009075] [2024-11-22 09:19:11,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737009075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 09:19:11,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 09:19:11,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 09:19:11,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114621364] [2024-11-22 09:19:11,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 09:19:11,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 09:19:11,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 09:19:11,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 09:19:11,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 09:19:11,465 INFO L87 Difference]: Start difference. First operand 144 states and 226 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-22 09:19:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 09:19:11,710 INFO L93 Difference]: Finished difference Result 427 states and 673 transitions. [2024-11-22 09:19:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 09:19:11,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 296 [2024-11-22 09:19:11,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 09:19:11,714 INFO L225 Difference]: With dead ends: 427 [2024-11-22 09:19:11,714 INFO L226 Difference]: Without dead ends: 286 [2024-11-22 09:19:11,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 09:19:11,720 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 173 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 09:19:11,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 655 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 09:19:11,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-22 09:19:11,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 252. [2024-11-22 09:19:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 153 states have (on average 1.3594771241830066) internal successors, (208), 153 states have internal predecessors, (208), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-22 09:19:11,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 400 transitions. [2024-11-22 09:19:11,771 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 400 transitions. Word has length 296 [2024-11-22 09:19:11,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 09:19:11,773 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 400 transitions. [2024-11-22 09:19:11,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-22 09:19:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 400 transitions. [2024-11-22 09:19:11,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-22 09:19:11,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:19:11,778 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:19:11,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 09:19:11,778 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:19:11,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:19:11,780 INFO L85 PathProgramCache]: Analyzing trace with hash 208180488, now seen corresponding path program 1 times [2024-11-22 09:19:11,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:19:11,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375238012] [2024-11-22 09:19:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:19:11,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:19:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:20:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-22 09:20:08,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 09:20:08,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375238012] [2024-11-22 09:20:08,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375238012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 09:20:08,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 09:20:08,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 09:20:08,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248455760] [2024-11-22 09:20:08,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 09:20:08,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 09:20:08,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 09:20:08,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 09:20:08,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-22 09:20:08,203 INFO L87 Difference]: Start difference. First operand 252 states and 400 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-22 09:20:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 09:20:12,319 INFO L93 Difference]: Finished difference Result 705 states and 1071 transitions. [2024-11-22 09:20:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 09:20:12,320 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 297 [2024-11-22 09:20:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 09:20:12,331 INFO L225 Difference]: With dead ends: 705 [2024-11-22 09:20:12,331 INFO L226 Difference]: Without dead ends: 564 [2024-11-22 09:20:12,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 09:20:12,333 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 757 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-22 09:20:12,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1860 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-22 09:20:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-22 09:20:12,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 389. [2024-11-22 09:20:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 238 states have (on average 1.315126050420168) internal successors, (313), 239 states have internal predecessors, (313), 144 states have call successors, (144), 6 states have call predecessors, (144), 6 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-22 09:20:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 601 transitions. [2024-11-22 09:20:12,418 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 601 transitions. Word has length 297 [2024-11-22 09:20:12,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 09:20:12,419 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 601 transitions. [2024-11-22 09:20:12,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-22 09:20:12,419 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 601 transitions. [2024-11-22 09:20:12,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-22 09:20:12,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:20:12,426 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:20:12,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 09:20:12,427 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:20:12,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:20:12,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1356305928, now seen corresponding path program 1 times [2024-11-22 09:20:12,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:20:12,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411226800] [2024-11-22 09:20:12,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:20:12,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:20:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:20:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-22 09:20:26,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 09:20:26,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411226800] [2024-11-22 09:20:26,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411226800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 09:20:26,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 09:20:26,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 09:20:26,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405597935] [2024-11-22 09:20:26,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 09:20:26,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 09:20:26,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 09:20:26,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 09:20:26,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-22 09:20:26,747 INFO L87 Difference]: Start difference. First operand 389 states and 601 transitions. Second operand has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-22 09:20:29,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 09:20:29,003 INFO L93 Difference]: Finished difference Result 781 states and 1172 transitions. [2024-11-22 09:20:29,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 09:20:29,006 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 297 [2024-11-22 09:20:29,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 09:20:29,012 INFO L225 Difference]: With dead ends: 781 [2024-11-22 09:20:29,013 INFO L226 Difference]: Without dead ends: 640 [2024-11-22 09:20:29,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2024-11-22 09:20:29,016 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 505 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 09:20:29,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1672 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 09:20:29,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-22 09:20:29,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 432. [2024-11-22 09:20:29,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 281 states have (on average 1.3629893238434163) internal successors, (383), 281 states have internal predecessors, (383), 144 states have call successors, (144), 6 states have call predecessors, (144), 6 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-22 09:20:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 671 transitions. [2024-11-22 09:20:29,058 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 671 transitions. Word has length 297 [2024-11-22 09:20:29,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 09:20:29,059 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 671 transitions. [2024-11-22 09:20:29,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-22 09:20:29,059 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 671 transitions. [2024-11-22 09:20:29,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-22 09:20:29,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:20:29,063 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:20:29,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 09:20:29,065 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:20:29,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:20:29,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2036364298, now seen corresponding path program 1 times [2024-11-22 09:20:29,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:20:29,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570142193] [2024-11-22 09:20:29,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:20:29,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:20:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat