./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-98.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-98.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 c9772336b4f5bbc4418fabef46aa66f1fadeb5e29c51f3493f820d65f03963e5 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 11:31:33,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 11:31:33,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 11:31:34,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 11:31:34,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 11:31:34,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 11:31:34,030 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 11:31:34,030 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 11:31:34,031 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 11:31:34,032 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 11:31:34,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 11:31:34,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 11:31:34,033 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 11:31:34,033 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 11:31:34,033 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 11:31:34,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 11:31:34,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 11:31:34,036 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 11:31:34,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 11:31:34,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 11:31:34,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 11:31:34,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 11:31:34,039 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 11:31:34,039 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 11:31:34,039 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 11:31:34,040 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 11:31:34,040 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 11:31:34,040 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 11:31:34,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 11:31:34,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 11:31:34,041 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 11:31:34,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 11:31:34,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 11:31:34,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 11:31:34,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 11:31:34,041 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 11:31:34,042 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 11:31:34,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 11:31:34,042 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 11:31:34,044 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 11:31:34,044 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 11:31:34,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 11:31:34,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9772336b4f5bbc4418fabef46aa66f1fadeb5e29c51f3493f820d65f03963e5 [2024-10-14 11:31:34,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 11:31:34,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 11:31:34,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 11:31:34,286 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 11:31:34,287 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 11:31:34,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-98.i [2024-10-14 11:31:35,682 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 11:31:35,847 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 11:31:35,848 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-98.i [2024-10-14 11:31:35,862 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62def483/3146f8d671ee4a429947dcecdb7d5283/FLAG89a1722ee [2024-10-14 11:31:36,241 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62def483/3146f8d671ee4a429947dcecdb7d5283 [2024-10-14 11:31:36,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 11:31:36,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 11:31:36,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 11:31:36,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 11:31:36,252 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 11:31:36,253 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:31:36" (1/1) ... [2024-10-14 11:31:36,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e44f926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36, skipping insertion in model container [2024-10-14 11:31:36,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:31:36" (1/1) ... [2024-10-14 11:31:36,282 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 11:31:36,429 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-98.i[916,929] [2024-10-14 11:31:36,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 11:31:36,548 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 11:31:36,558 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-98.i[916,929] [2024-10-14 11:31:36,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 11:31:36,603 INFO L204 MainTranslator]: Completed translation [2024-10-14 11:31:36,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36 WrapperNode [2024-10-14 11:31:36,604 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 11:31:36,605 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 11:31:36,605 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 11:31:36,605 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 11:31:36,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36" (1/1) ... [2024-10-14 11:31:36,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36" (1/1) ... [2024-10-14 11:31:36,645 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 179 [2024-10-14 11:31:36,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 11:31:36,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 11:31:36,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 11:31:36,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 11:31:36,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36" (1/1) ... [2024-10-14 11:31:36,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36" (1/1) ... [2024-10-14 11:31:36,662 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36" (1/1) ... [2024-10-14 11:31:36,679 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]. [2024-10-14 11:31:36,679 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36" (1/1) ... [2024-10-14 11:31:36,680 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36" (1/1) ... [2024-10-14 11:31:36,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36" (1/1) ... [2024-10-14 11:31:36,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36" (1/1) ... [2024-10-14 11:31:36,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36" (1/1) ... [2024-10-14 11:31:36,691 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36" (1/1) ... [2024-10-14 11:31:36,695 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 11:31:36,695 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 11:31:36,695 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 11:31:36,696 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 11:31:36,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36" (1/1) ... [2024-10-14 11:31:36,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 11:31:36,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 11:31:36,737 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) [2024-10-14 11:31:36,746 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 [2024-10-14 11:31:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 11:31:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-14 11:31:36,782 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-14 11:31:36,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 11:31:36,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 11:31:36,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 11:31:36,855 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 11:31:36,857 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 11:31:37,159 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-10-14 11:31:37,159 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 11:31:37,201 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 11:31:37,201 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 11:31:37,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:31:37 BoogieIcfgContainer [2024-10-14 11:31:37,202 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 11:31:37,204 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 11:31:37,204 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 11:31:37,207 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 11:31:37,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:31:36" (1/3) ... [2024-10-14 11:31:37,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705b98bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:31:37, skipping insertion in model container [2024-10-14 11:31:37,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:36" (2/3) ... [2024-10-14 11:31:37,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705b98bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:31:37, skipping insertion in model container [2024-10-14 11:31:37,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:31:37" (3/3) ... [2024-10-14 11:31:37,209 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-98.i [2024-10-14 11:31:37,230 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 11:31:37,230 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 11:31:37,279 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 11:31:37,286 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;@6b626332, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 11:31:37,286 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 11:31:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 45 states have (on average 1.488888888888889) internal successors, (67), 46 states have internal predecessors, (67), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-14 11:31:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-14 11:31:37,308 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 11:31:37,308 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 11:31:37,309 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 11:31:37,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 11:31:37,313 INFO L85 PathProgramCache]: Analyzing trace with hash -919665660, now seen corresponding path program 1 times [2024-10-14 11:31:37,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 11:31:37,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509216707] [2024-10-14 11:31:37,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 11:31:37,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 11:31:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 11:31:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 11:31:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 11:31:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-14 11:31:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-14 11:31:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 11:31:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-14 11:31:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 11:31:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-14 11:31:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 11:31:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 11:31:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 11:31:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-14 11:31:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 11:31:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-14 11:31:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-14 11:31:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 11:31:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-14 11:31:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-14 11:31:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-14 11:31:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-14 11:31:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-14 11:31:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-14 11:31:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-14 11:31:37,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 11:31:37,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509216707] [2024-10-14 11:31:37,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509216707] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 11:31:37,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 11:31:37,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 11:31:37,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815115449] [2024-10-14 11:31:37,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 11:31:37,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 11:31:37,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 11:31:37,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 11:31:37,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 11:31:37,772 INFO L87 Difference]: Start difference. First operand has 71 states, 45 states have (on average 1.488888888888889) internal successors, (67), 46 states have internal predecessors, (67), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-10-14 11:31:37,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 11:31:37,811 INFO L93 Difference]: Finished difference Result 139 states and 247 transitions. [2024-10-14 11:31:37,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 11:31:37,816 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 148 [2024-10-14 11:31:37,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 11:31:37,825 INFO L225 Difference]: With dead ends: 139 [2024-10-14 11:31:37,825 INFO L226 Difference]: Without dead ends: 69 [2024-10-14 11:31:37,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 11:31:37,832 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 11:31:37,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 11:31:37,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-14 11:31:37,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-10-14 11:31:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-14 11:31:37,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 108 transitions. [2024-10-14 11:31:37,904 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 108 transitions. Word has length 148 [2024-10-14 11:31:37,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 11:31:37,904 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 108 transitions. [2024-10-14 11:31:37,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-10-14 11:31:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 108 transitions. [2024-10-14 11:31:37,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-14 11:31:37,913 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 11:31:37,913 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 11:31:37,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 11:31:37,913 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 11:31:37,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 11:31:37,914 INFO L85 PathProgramCache]: Analyzing trace with hash 251313334, now seen corresponding path program 1 times [2024-10-14 11:31:37,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 11:31:37,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419616383] [2024-10-14 11:31:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 11:31:37,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 11:31:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 11:31:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 11:31:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 11:31:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-14 11:31:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-14 11:31:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 11:31:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-14 11:31:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 11:31:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-14 11:31:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 11:31:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 11:31:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 11:31:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-14 11:31:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 11:31:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-14 11:31:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-14 11:31:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 11:31:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-14 11:31:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-14 11:31:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-14 11:31:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-14 11:31:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-14 11:31:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-14 11:31:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-14 11:31:38,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 11:31:38,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419616383] [2024-10-14 11:31:38,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419616383] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 11:31:38,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 11:31:38,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 11:31:38,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490182485] [2024-10-14 11:31:38,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 11:31:38,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 11:31:38,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 11:31:38,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 11:31:38,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 11:31:38,226 INFO L87 Difference]: Start difference. First operand 69 states and 108 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-10-14 11:31:38,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 11:31:38,290 INFO L93 Difference]: Finished difference Result 203 states and 318 transitions. [2024-10-14 11:31:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 11:31:38,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 148 [2024-10-14 11:31:38,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 11:31:38,294 INFO L225 Difference]: With dead ends: 203 [2024-10-14 11:31:38,294 INFO L226 Difference]: Without dead ends: 135 [2024-10-14 11:31:38,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 11:31:38,296 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 97 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 11:31:38,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 280 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 11:31:38,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-10-14 11:31:38,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2024-10-14 11:31:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 84 states have (on average 1.369047619047619) internal successors, (115), 84 states have internal predecessors, (115), 46 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-10-14 11:31:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 207 transitions. [2024-10-14 11:31:38,331 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 207 transitions. Word has length 148 [2024-10-14 11:31:38,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 11:31:38,332 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 207 transitions. [2024-10-14 11:31:38,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-10-14 11:31:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 207 transitions. [2024-10-14 11:31:38,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-14 11:31:38,336 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 11:31:38,336 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 11:31:38,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 11:31:38,337 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 11:31:38,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 11:31:38,338 INFO L85 PathProgramCache]: Analyzing trace with hash 308571636, now seen corresponding path program 1 times [2024-10-14 11:31:38,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 11:31:38,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160707730] [2024-10-14 11:31:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 11:31:38,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 11:31:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 11:31:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 11:31:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 11:31:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-14 11:31:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-14 11:31:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 11:31:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-14 11:31:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 11:31:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-14 11:31:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 11:31:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 11:31:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 11:31:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-14 11:31:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 11:31:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-14 11:31:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-14 11:31:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 11:31:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-14 11:31:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-14 11:31:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-14 11:31:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-14 11:31:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-14 11:31:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-14 11:31:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-14 11:31:39,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 11:31:39,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160707730] [2024-10-14 11:31:39,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160707730] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 11:31:39,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 11:31:39,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 11:31:39,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300828767] [2024-10-14 11:31:39,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 11:31:39,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 11:31:39,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 11:31:39,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 11:31:39,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 11:31:39,287 INFO L87 Difference]: Start difference. First operand 133 states and 207 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-10-14 11:31:39,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 11:31:39,582 INFO L93 Difference]: Finished difference Result 359 states and 555 transitions. [2024-10-14 11:31:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 11:31:39,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 148 [2024-10-14 11:31:39,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 11:31:39,586 INFO L225 Difference]: With dead ends: 359 [2024-10-14 11:31:39,586 INFO L226 Difference]: Without dead ends: 227 [2024-10-14 11:31:39,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-14 11:31:39,591 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 158 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 11:31:39,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 381 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 11:31:39,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-14 11:31:39,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 203. [2024-10-14 11:31:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 129 states have (on average 1.372093023255814) internal successors, (177), 129 states have internal predecessors, (177), 69 states have call successors, (69), 4 states have call predecessors, (69), 4 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2024-10-14 11:31:39,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 315 transitions. [2024-10-14 11:31:39,638 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 315 transitions. Word has length 148 [2024-10-14 11:31:39,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 11:31:39,639 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 315 transitions. [2024-10-14 11:31:39,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-10-14 11:31:39,639 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 315 transitions. [2024-10-14 11:31:39,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-14 11:31:39,641 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 11:31:39,641 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 11:31:39,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 11:31:39,641 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 11:31:39,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 11:31:39,641 INFO L85 PathProgramCache]: Analyzing trace with hash -712496718, now seen corresponding path program 1 times [2024-10-14 11:31:39,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 11:31:39,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193752296] [2024-10-14 11:31:39,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 11:31:39,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 11:31:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 11:31:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 11:31:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 11:31:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-14 11:31:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-14 11:31:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 11:31:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-14 11:31:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 11:31:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-14 11:31:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 11:31:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 11:31:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 11:31:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-14 11:31:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 11:31:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-14 11:31:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-14 11:31:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 11:31:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-14 11:31:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-14 11:31:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-14 11:31:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-14 11:31:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-14 11:31:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-14 11:31:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 42 proven. 24 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-10-14 11:31:39,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 11:31:39,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193752296] [2024-10-14 11:31:39,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193752296] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 11:31:39,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439068646] [2024-10-14 11:31:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 11:31:39,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 11:31:39,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 11:31:39,999 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) [2024-10-14 11:31:40,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 11:31:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:40,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 11:31:40,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 11:31:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 498 proven. 24 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-10-14 11:31:40,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 11:31:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 42 proven. 24 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-10-14 11:31:40,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439068646] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 11:31:40,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 11:31:40,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-10-14 11:31:40,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176159617] [2024-10-14 11:31:40,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 11:31:40,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 11:31:40,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 11:31:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 11:31:40,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 11:31:40,649 INFO L87 Difference]: Start difference. First operand 203 states and 315 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-10-14 11:31:40,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 11:31:40,857 INFO L93 Difference]: Finished difference Result 431 states and 652 transitions. [2024-10-14 11:31:40,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 11:31:40,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 148 [2024-10-14 11:31:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 11:31:40,861 INFO L225 Difference]: With dead ends: 431 [2024-10-14 11:31:40,861 INFO L226 Difference]: Without dead ends: 229 [2024-10-14 11:31:40,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 337 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-10-14 11:31:40,864 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 156 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 11:31:40,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 178 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 11:31:40,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-10-14 11:31:40,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 215. [2024-10-14 11:31:40,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 138 states have (on average 1.3115942028985508) internal successors, (181), 138 states have internal predecessors, (181), 69 states have call successors, (69), 7 states have call predecessors, (69), 7 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2024-10-14 11:31:40,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 319 transitions. [2024-10-14 11:31:40,902 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 319 transitions. Word has length 148 [2024-10-14 11:31:40,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 11:31:40,904 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 319 transitions. [2024-10-14 11:31:40,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-10-14 11:31:40,905 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 319 transitions. [2024-10-14 11:31:40,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-14 11:31:40,906 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 11:31:40,906 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 11:31:40,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 11:31:41,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 11:31:41,108 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 11:31:41,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 11:31:41,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1964510333, now seen corresponding path program 1 times [2024-10-14 11:31:41,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 11:31:41,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600824315] [2024-10-14 11:31:41,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 11:31:41,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 11:31:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 11:31:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 11:31:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 11:31:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-14 11:31:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-14 11:31:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 11:31:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-14 11:31:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 11:31:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-14 11:31:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 11:31:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 11:31:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 11:31:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-14 11:31:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 11:31:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-14 11:31:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-14 11:31:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 11:31:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-14 11:31:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-14 11:31:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-14 11:31:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-14 11:31:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-14 11:31:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-14 11:31:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-10-14 11:31:41,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 11:31:41,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600824315] [2024-10-14 11:31:41,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600824315] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 11:31:41,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13607655] [2024-10-14 11:31:41,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 11:31:41,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 11:31:41,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 11:31:41,581 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) [2024-10-14 11:31:41,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 11:31:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:41,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 11:31:41,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 11:31:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 372 proven. 51 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-10-14 11:31:42,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 11:31:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-10-14 11:31:42,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13607655] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 11:31:42,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 11:31:42,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 18 [2024-10-14 11:31:42,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544294292] [2024-10-14 11:31:42,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 11:31:42,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 11:31:42,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 11:31:42,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 11:31:42,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-10-14 11:31:42,654 INFO L87 Difference]: Start difference. First operand 215 states and 319 transitions. Second operand has 18 states, 17 states have (on average 5.176470588235294) internal successors, (88), 18 states have internal predecessors, (88), 7 states have call successors, (69), 3 states have call predecessors, (69), 6 states have return successors, (69), 6 states have call predecessors, (69), 7 states have call successors, (69) [2024-10-14 11:31:43,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 11:31:43,366 INFO L93 Difference]: Finished difference Result 646 states and 952 transitions. [2024-10-14 11:31:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 11:31:43,367 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.176470588235294) internal successors, (88), 18 states have internal predecessors, (88), 7 states have call successors, (69), 3 states have call predecessors, (69), 6 states have return successors, (69), 6 states have call predecessors, (69), 7 states have call successors, (69) Word has length 149 [2024-10-14 11:31:43,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 11:31:43,370 INFO L225 Difference]: With dead ends: 646 [2024-10-14 11:31:43,371 INFO L226 Difference]: Without dead ends: 432 [2024-10-14 11:31:43,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2024-10-14 11:31:43,373 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 326 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 11:31:43,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 505 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 11:31:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-10-14 11:31:43,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 271. [2024-10-14 11:31:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 167 states have (on average 1.2574850299401197) internal successors, (210), 167 states have internal predecessors, (210), 92 states have call successors, (92), 11 states have call predecessors, (92), 11 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-10-14 11:31:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 394 transitions. [2024-10-14 11:31:43,419 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 394 transitions. Word has length 149 [2024-10-14 11:31:43,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 11:31:43,419 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 394 transitions. [2024-10-14 11:31:43,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.176470588235294) internal successors, (88), 18 states have internal predecessors, (88), 7 states have call successors, (69), 3 states have call predecessors, (69), 6 states have return successors, (69), 6 states have call predecessors, (69), 7 states have call successors, (69) [2024-10-14 11:31:43,420 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 394 transitions. [2024-10-14 11:31:43,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-14 11:31:43,421 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 11:31:43,421 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 11:31:43,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 11:31:43,622 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 [2024-10-14 11:31:43,623 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 11:31:43,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 11:31:43,623 INFO L85 PathProgramCache]: Analyzing trace with hash 742109061, now seen corresponding path program 1 times [2024-10-14 11:31:43,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 11:31:43,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099958792] [2024-10-14 11:31:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 11:31:43,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 11:31:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 11:31:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 11:31:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 11:31:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-14 11:31:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-14 11:31:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 11:31:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-14 11:31:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 11:31:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-14 11:31:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 11:31:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 11:31:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 11:31:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-14 11:31:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 11:31:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:51,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-14 11:31:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:52,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-14 11:31:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:52,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 11:31:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:52,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-14 11:31:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:52,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-14 11:31:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:52,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-14 11:31:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:52,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-14 11:31:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:52,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-14 11:31:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:52,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-14 11:31:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 129 proven. 51 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2024-10-14 11:31:52,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 11:31:52,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099958792] [2024-10-14 11:31:52,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099958792] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 11:31:52,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112753212] [2024-10-14 11:31:52,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 11:31:52,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 11:31:52,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 11:31:52,117 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) [2024-10-14 11:31:52,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 11:31:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 11:31:52,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-14 11:31:52,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 11:31:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 537 proven. 183 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2024-10-14 11:31:58,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 11:32:15,609 WARN L286 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-14 11:32:37,742 WARN L286 SmtUtils]: Spent 11.18s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-14 11:32:37,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112753212] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 11:32:37,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 11:32:37,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 29] total 43 [2024-10-14 11:32:37,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999118801] [2024-10-14 11:32:37,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 11:32:37,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-14 11:32:37,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 11:32:37,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-14 11:32:37,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=2400, Unknown=0, NotChecked=0, Total=2756 [2024-10-14 11:32:37,748 INFO L87 Difference]: Start difference. First operand 271 states and 394 transitions. Second operand has 43 states, 41 states have (on average 2.292682926829268) internal successors, (94), 37 states have internal predecessors, (94), 13 states have call successors, (46), 7 states have call predecessors, (46), 10 states have return successors, (46), 14 states have call predecessors, (46), 13 states have call successors, (46) [2024-10-14 11:32:54,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0]