./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_codestructure_dependencies_file-56.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_codestructure_dependencies_file-56.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 539a31c92191ccf499583caefdee83885e5c729e76b73005b4b9f92310978df4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 07:19:24,445 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 07:19:24,525 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 07:19:24,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 07:19:24,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 07:19:24,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 07:19:24,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 07:19:24,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 07:19:24,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 07:19:24,557 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 07:19:24,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 07:19:24,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 07:19:24,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 07:19:24,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 07:19:24,559 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 07:19:24,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 07:19:24,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 07:19:24,561 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 07:19:24,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 07:19:24,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 07:19:24,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 07:19:24,562 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 07:19:24,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 07:19:24,563 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 07:19:24,568 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 07:19:24,569 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 07:19:24,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 07:19:24,569 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 07:19:24,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 07:19:24,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 07:19:24,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 07:19:24,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 07:19:24,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 07:19:24,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 07:19:24,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 07:19:24,571 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 07:19:24,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 07:19:24,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 07:19:24,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 07:19:24,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 07:19:24,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 07:19:24,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 07:19:24,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 539a31c92191ccf499583caefdee83885e5c729e76b73005b4b9f92310978df4 [2024-10-14 07:19:24,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 07:19:24,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 07:19:24,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 07:19:24,831 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 07:19:24,832 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 07:19:24,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-56.i [2024-10-14 07:19:26,323 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 07:19:26,513 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 07:19:26,513 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-56.i [2024-10-14 07:19:26,529 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/382d6d08e/27c89cc956b1423ab1ab88dd7355e50a/FLAGa40b82bfd [2024-10-14 07:19:26,544 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/382d6d08e/27c89cc956b1423ab1ab88dd7355e50a [2024-10-14 07:19:26,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 07:19:26,547 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 07:19:26,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 07:19:26,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 07:19:26,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 07:19:26,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:19:26" (1/1) ... [2024-10-14 07:19:26,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e92d840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26, skipping insertion in model container [2024-10-14 07:19:26,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:19:26" (1/1) ... [2024-10-14 07:19:26,586 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 07:19:26,727 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_codestructure_dependencies_file-56.i[919,932] [2024-10-14 07:19:26,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 07:19:26,803 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 07:19:26,816 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_codestructure_dependencies_file-56.i[919,932] [2024-10-14 07:19:26,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 07:19:26,920 INFO L204 MainTranslator]: Completed translation [2024-10-14 07:19:26,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26 WrapperNode [2024-10-14 07:19:26,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 07:19:26,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 07:19:26,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 07:19:26,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 07:19:26,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26" (1/1) ... [2024-10-14 07:19:26,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26" (1/1) ... [2024-10-14 07:19:26,994 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 130 [2024-10-14 07:19:26,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 07:19:26,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 07:19:26,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 07:19:26,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 07:19:27,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26" (1/1) ... [2024-10-14 07:19:27,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26" (1/1) ... [2024-10-14 07:19:27,014 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26" (1/1) ... [2024-10-14 07:19:27,035 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 07:19:27,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26" (1/1) ... [2024-10-14 07:19:27,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26" (1/1) ... [2024-10-14 07:19:27,049 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26" (1/1) ... [2024-10-14 07:19:27,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26" (1/1) ... [2024-10-14 07:19:27,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26" (1/1) ... [2024-10-14 07:19:27,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26" (1/1) ... [2024-10-14 07:19:27,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 07:19:27,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 07:19:27,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 07:19:27,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 07:19:27,071 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26" (1/1) ... [2024-10-14 07:19:27,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 07:19:27,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 07:19:27,100 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 07:19:27,103 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 07:19:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 07:19:27,149 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-14 07:19:27,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-14 07:19:27,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 07:19:27,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 07:19:27,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 07:19:27,226 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 07:19:27,231 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 07:19:27,561 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-10-14 07:19:27,563 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 07:19:27,611 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 07:19:27,611 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 07:19:27,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:19:27 BoogieIcfgContainer [2024-10-14 07:19:27,611 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 07:19:27,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 07:19:27,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 07:19:27,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 07:19:27,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:19:26" (1/3) ... [2024-10-14 07:19:27,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f23cde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:19:27, skipping insertion in model container [2024-10-14 07:19:27,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:26" (2/3) ... [2024-10-14 07:19:27,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f23cde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:19:27, skipping insertion in model container [2024-10-14 07:19:27,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:19:27" (3/3) ... [2024-10-14 07:19:27,620 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-56.i [2024-10-14 07:19:27,635 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 07:19:27,635 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 07:19:27,697 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 07:19:27,702 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;@3bb0040, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 07:19:27,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 07:19:27,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-14 07:19:27,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-14 07:19:27,716 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:19:27,717 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:19:27,718 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:19:27,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:19:27,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1294384406, now seen corresponding path program 1 times [2024-10-14 07:19:27,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:19:27,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832708244] [2024-10-14 07:19:27,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:19:27,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:19:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 07:19:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 07:19:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-14 07:19:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-14 07:19:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 07:19:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 07:19:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-14 07:19:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 07:19:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-14 07:19:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 07:19:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 07:19:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 07:19:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 07:19:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 07:19:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-14 07:19:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-14 07:19:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 07:19:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-14 07:19:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-14 07:19:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-14 07:19:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-14 07:19:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-14 07:19:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:28,168 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-14 07:19:28,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:19:28,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832708244] [2024-10-14 07:19:28,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832708244] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:19:28,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:19:28,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 07:19:28,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827429318] [2024-10-14 07:19:28,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:19:28,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 07:19:28,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:19:28,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 07:19:28,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 07:19:28,204 INFO L87 Difference]: Start difference. First operand has 54 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-10-14 07:19:28,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:19:28,243 INFO L93 Difference]: Finished difference Result 105 states and 190 transitions. [2024-10-14 07:19:28,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 07:19:28,246 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 133 [2024-10-14 07:19:28,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:19:28,257 INFO L225 Difference]: With dead ends: 105 [2024-10-14 07:19:28,257 INFO L226 Difference]: Without dead ends: 52 [2024-10-14 07:19:28,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 68 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 07:19:28,267 INFO L432 NwaCegarLoop]: 76 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, 76 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 07:19:28,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 07:19:28,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-10-14 07:19:28,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-10-14 07:19:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-14 07:19:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 79 transitions. [2024-10-14 07:19:28,313 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 79 transitions. Word has length 133 [2024-10-14 07:19:28,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:19:28,314 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 79 transitions. [2024-10-14 07:19:28,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-10-14 07:19:28,314 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 79 transitions. [2024-10-14 07:19:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-14 07:19:28,320 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:19:28,321 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:19:28,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 07:19:28,321 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:19:28,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:19:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash -4116054, now seen corresponding path program 1 times [2024-10-14 07:19:28,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:19:28,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932878742] [2024-10-14 07:19:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:19:28,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:19:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 07:19:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 07:19:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-14 07:19:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-14 07:19:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 07:19:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 07:19:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-14 07:19:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-14 07:19:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-14 07:19:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 07:19:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 07:19:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 07:19:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 07:19:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-14 07:19:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-14 07:19:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-14 07:19:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-14 07:19:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-14 07:19:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-14 07:19:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-14 07:19:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-14 07:19:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-14 07:19:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 07:19:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-14 07:19:29,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 07:19:29,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932878742] [2024-10-14 07:19:29,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932878742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 07:19:29,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 07:19:29,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 07:19:29,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052562019] [2024-10-14 07:19:29,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 07:19:29,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 07:19:29,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 07:19:29,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 07:19:29,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 07:19:29,311 INFO L87 Difference]: Start difference. First operand 52 states and 79 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-10-14 07:19:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 07:19:29,439 INFO L93 Difference]: Finished difference Result 137 states and 203 transitions. [2024-10-14 07:19:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 07:19:29,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 133 [2024-10-14 07:19:29,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 07:19:29,444 INFO L225 Difference]: With dead ends: 137 [2024-10-14 07:19:29,445 INFO L226 Difference]: Without dead ends: 86 [2024-10-14 07:19:29,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 07:19:29,448 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 57 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 07:19:29,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 160 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 07:19:29,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-14 07:19:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2024-10-14 07:19:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 46 states have internal predecessors, (59), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-14 07:19:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 111 transitions. [2024-10-14 07:19:29,478 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 111 transitions. Word has length 133 [2024-10-14 07:19:29,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 07:19:29,480 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 111 transitions. [2024-10-14 07:19:29,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-10-14 07:19:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 111 transitions. [2024-10-14 07:19:29,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-14 07:19:29,484 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 07:19:29,484 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:19:29,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 07:19:29,485 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 07:19:29,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 07:19:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash 53142248, now seen corresponding path program 1 times [2024-10-14 07:19:29,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 07:19:29,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868070161] [2024-10-14 07:19:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 07:19:29,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 07:19:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat