./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/xcsp/aim-100-1-6-unsat-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/xcsp/aim-100-1-6-unsat-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c2f0fbbd2bf92971bec1d377ddf5617103eab29ad1edf511c4c9b502b8f9e3e4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:25:41,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:25:41,570 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:25:41,577 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:25:41,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:25:41,622 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:25:41,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:25:41,623 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:25:41,624 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:25:41,624 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:25:41,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:25:41,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:25:41,637 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:25:41,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:25:41,638 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:25:41,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:25:41,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:25:41,638 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:25:41,639 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:25:41,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:25:41,639 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:25:41,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:25:41,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:25:41,644 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:25:41,644 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:25:41,644 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:25:41,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:25:41,644 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:25:41,644 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:25:41,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:25:41,645 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:25:41,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:25:41,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:25:41,645 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:25:41,645 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:25:41,645 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:25:41,646 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:25:41,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:25:41,646 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:25:41,646 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:25:41,647 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:25:41,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:25:41,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2f0fbbd2bf92971bec1d377ddf5617103eab29ad1edf511c4c9b502b8f9e3e4 [2024-11-18 15:25:41,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:25:41,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:25:41,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:25:41,920 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:25:41,923 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:25:41,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/xcsp/aim-100-1-6-unsat-1.c [2024-11-18 15:25:43,309 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:25:43,547 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:25:43,550 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/aim-100-1-6-unsat-1.c [2024-11-18 15:25:43,568 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1ffa9f7/f3406c11f0614f0b99bf943d012f3dc0/FLAGf8bc25511 [2024-11-18 15:25:43,585 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1ffa9f7/f3406c11f0614f0b99bf943d012f3dc0 [2024-11-18 15:25:43,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:25:43,591 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:25:43,592 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:25:43,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:25:43,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:25:43,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:25:43" (1/1) ... [2024-11-18 15:25:43,600 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44bd2499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:43, skipping insertion in model container [2024-11-18 15:25:43,600 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:25:43" (1/1) ... [2024-11-18 15:25:43,637 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:25:43,952 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/aim-100-1-6-unsat-1.c[19070,19083] [2024-11-18 15:25:43,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:25:43,997 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:25:44,146 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/aim-100-1-6-unsat-1.c[19070,19083] [2024-11-18 15:25:44,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:25:44,182 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:25:44,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:44 WrapperNode [2024-11-18 15:25:44,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:25:44,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:25:44,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:25:44,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:25:44,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:44" (1/1) ... [2024-11-18 15:25:44,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:44" (1/1) ... [2024-11-18 15:25:44,333 INFO L138 Inliner]: procedures = 13, calls = 364, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3457 [2024-11-18 15:25:44,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:25:44,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:25:44,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:25:44,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:25:44,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:44" (1/1) ... [2024-11-18 15:25:44,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:44" (1/1) ... [2024-11-18 15:25:44,380 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:44" (1/1) ... [2024-11-18 15:25:44,436 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 15:25:44,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:44" (1/1) ... [2024-11-18 15:25:44,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:44" (1/1) ... [2024-11-18 15:25:44,486 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:44" (1/1) ... [2024-11-18 15:25:44,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:44" (1/1) ... [2024-11-18 15:25:44,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:44" (1/1) ... [2024-11-18 15:25:44,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:44" (1/1) ... [2024-11-18 15:25:44,578 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:25:44,580 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:25:44,580 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:25:44,580 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:25:44,581 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:44" (1/1) ... [2024-11-18 15:25:44,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:25:44,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:25:44,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 15:25:44,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 15:25:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:25:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:25:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:25:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:25:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-18 15:25:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-18 15:25:44,921 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:25:44,923 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:25:48,330 INFO L? ?]: Removed 803 outVars from TransFormulas that were not future-live. [2024-11-18 15:25:48,330 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:25:48,362 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:25:48,362 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 15:25:48,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:25:48 BoogieIcfgContainer [2024-11-18 15:25:48,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:25:48,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:25:48,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:25:48,371 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:25:48,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:25:43" (1/3) ... [2024-11-18 15:25:48,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d0a716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:25:48, skipping insertion in model container [2024-11-18 15:25:48,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:25:44" (2/3) ... [2024-11-18 15:25:48,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d0a716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:25:48, skipping insertion in model container [2024-11-18 15:25:48,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:25:48" (3/3) ... [2024-11-18 15:25:48,373 INFO L112 eAbstractionObserver]: Analyzing ICFG aim-100-1-6-unsat-1.c [2024-11-18 15:25:48,387 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:25:48,387 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 15:25:48,474 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:25:48,479 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;@3536c3b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:25:48,480 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 15:25:48,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 1594 states, 1234 states have (on average 1.5251215559157212) internal successors, (1882), 1235 states have internal predecessors, (1882), 357 states have call successors, (357), 1 states have call predecessors, (357), 1 states have return successors, (357), 357 states have call predecessors, (357), 357 states have call successors, (357) [2024-11-18 15:25:48,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2369 [2024-11-18 15:25:48,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:25:48,651 INFO L215 NwaCegarLoop]: trace histogram [357, 357, 357, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:25:48,652 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:25:48,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:25:48,663 INFO L85 PathProgramCache]: Analyzing trace with hash 90978456, now seen corresponding path program 1 times [2024-11-18 15:25:48,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:25:48,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587281171] [2024-11-18 15:25:48,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:25:48,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:25:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:25:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 0 proven. 712 refuted. 0 times theorem prover too weak. 253472 trivial. 0 not checked. [2024-11-18 15:25:50,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:25:50,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587281171] [2024-11-18 15:25:50,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587281171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:25:50,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185443796] [2024-11-18 15:25:50,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:25:50,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:25:50,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:25:50,117 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:25:50,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:25:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:25:50,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 4565 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 15:25:50,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:25:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 253472 trivial. 0 not checked. [2024-11-18 15:25:51,104 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:25:51,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185443796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:25:51,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:25:51,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 15:25:51,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359768208] [2024-11-18 15:25:51,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:25:51,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 15:25:51,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:25:51,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 15:25:51,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:25:51,143 INFO L87 Difference]: Start difference. First operand has 1594 states, 1234 states have (on average 1.5251215559157212) internal successors, (1882), 1235 states have internal predecessors, (1882), 357 states have call successors, (357), 1 states have call predecessors, (357), 1 states have return successors, (357), 357 states have call predecessors, (357), 357 states have call successors, (357) Second operand has 2 states, 2 states have (on average 294.0) internal successors, (588), 2 states have internal predecessors, (588), 2 states have call successors, (357), 2 states have call predecessors, (357), 1 states have return successors, (357), 1 states have call predecessors, (357), 2 states have call successors, (357) [2024-11-18 15:25:51,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:25:51,264 INFO L93 Difference]: Finished difference Result 3182 states and 5543 transitions. [2024-11-18 15:25:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 15:25:51,268 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 294.0) internal successors, (588), 2 states have internal predecessors, (588), 2 states have call successors, (357), 2 states have call predecessors, (357), 1 states have return successors, (357), 1 states have call predecessors, (357), 2 states have call successors, (357) Word has length 2368 [2024-11-18 15:25:51,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:25:51,287 INFO L225 Difference]: With dead ends: 3182 [2024-11-18 15:25:51,287 INFO L226 Difference]: Without dead ends: 1591 [2024-11-18 15:25:51,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2369 GetRequests, 2369 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:25:51,299 INFO L432 NwaCegarLoop]: 2592 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:25:51,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:25:51,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2024-11-18 15:25:51,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1591. [2024-11-18 15:25:51,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1232 states have (on average 1.5243506493506493) internal successors, (1878), 1232 states have internal predecessors, (1878), 357 states have call successors, (357), 1 states have call predecessors, (357), 1 states have return successors, (357), 357 states have call predecessors, (357), 357 states have call successors, (357) [2024-11-18 15:25:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 2592 transitions. [2024-11-18 15:25:51,549 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 2592 transitions. Word has length 2368 [2024-11-18 15:25:51,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:25:51,550 INFO L471 AbstractCegarLoop]: Abstraction has 1591 states and 2592 transitions. [2024-11-18 15:25:51,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 294.0) internal successors, (588), 2 states have internal predecessors, (588), 2 states have call successors, (357), 2 states have call predecessors, (357), 1 states have return successors, (357), 1 states have call predecessors, (357), 2 states have call successors, (357) [2024-11-18 15:25:51,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 2592 transitions. [2024-11-18 15:25:51,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2369 [2024-11-18 15:25:51,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:25:51,625 INFO L215 NwaCegarLoop]: trace histogram [357, 357, 357, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:25:51,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 15:25:51,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 15:25:51,830 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:25:51,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:25:51,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1903312266, now seen corresponding path program 1 times [2024-11-18 15:25:51,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:25:51,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039845843] [2024-11-18 15:25:51,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:25:51,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:25:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:26:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 1680 proven. 8730 refuted. 0 times theorem prover too weak. 243774 trivial. 0 not checked. [2024-11-18 15:26:10,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:26:10,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039845843] [2024-11-18 15:26:10,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039845843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:26:10,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59350799] [2024-11-18 15:26:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:26:10,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:26:10,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:26:10,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:26:10,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:26:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:26:11,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 4565 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-18 15:26:11,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:26:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 22284 proven. 6252 refuted. 0 times theorem prover too weak. 225648 trivial. 0 not checked. [2024-11-18 15:26:21,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:26:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 1764 proven. 6612 refuted. 0 times theorem prover too weak. 245808 trivial. 0 not checked. [2024-11-18 15:26:32,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59350799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:26:32,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:26:32,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 16] total 44 [2024-11-18 15:26:32,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87950941] [2024-11-18 15:26:32,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:26:32,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-18 15:26:32,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:26:32,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-18 15:26:32,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1597, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 15:26:32,635 INFO L87 Difference]: Start difference. First operand 1591 states and 2592 transitions. Second operand has 44 states, 30 states have (on average 50.36666666666667) internal successors, (1511), 32 states have internal predecessors, (1511), 41 states have call successors, (964), 2 states have call predecessors, (964), 3 states have return successors, (966), 39 states have call predecessors, (966), 41 states have call successors, (966) [2024-11-18 15:26:51,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:26:51,131 INFO L93 Difference]: Finished difference Result 13711 states and 22331 transitions. [2024-11-18 15:26:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-18 15:26:51,133 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 30 states have (on average 50.36666666666667) internal successors, (1511), 32 states have internal predecessors, (1511), 41 states have call successors, (964), 2 states have call predecessors, (964), 3 states have return successors, (966), 39 states have call predecessors, (966), 41 states have call successors, (966) Word has length 2368 [2024-11-18 15:26:51,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:26:51,187 INFO L225 Difference]: With dead ends: 13711 [2024-11-18 15:26:51,187 INFO L226 Difference]: Without dead ends: 13082 [2024-11-18 15:26:51,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4847 GetRequests, 4731 SyntacticMatches, 7 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2796 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3643, Invalid=8567, Unknown=0, NotChecked=0, Total=12210 [2024-11-18 15:26:51,196 INFO L432 NwaCegarLoop]: 5867 mSDtfsCounter, 53591 mSDsluCounter, 55683 mSDsCounter, 0 mSdLazyCounter, 12956 mSolverCounterSat, 4703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53593 SdHoareTripleChecker+Valid, 61550 SdHoareTripleChecker+Invalid, 17659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4703 IncrementalHoareTripleChecker+Valid, 12956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:26:51,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53593 Valid, 61550 Invalid, 17659 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4703 Valid, 12956 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2024-11-18 15:26:51,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13082 states. [2024-11-18 15:26:51,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13082 to 6558. [2024-11-18 15:26:51,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6558 states, 5568 states have (on average 1.5619612068965518) internal successors, (8697), 5568 states have internal predecessors, (8697), 988 states have call successors, (988), 1 states have call predecessors, (988), 1 states have return successors, (988), 988 states have call predecessors, (988), 988 states have call successors, (988) [2024-11-18 15:26:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6558 states to 6558 states and 10673 transitions. [2024-11-18 15:26:51,811 INFO L78 Accepts]: Start accepts. Automaton has 6558 states and 10673 transitions. Word has length 2368 [2024-11-18 15:26:51,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:26:51,882 INFO L471 AbstractCegarLoop]: Abstraction has 6558 states and 10673 transitions. [2024-11-18 15:26:51,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 30 states have (on average 50.36666666666667) internal successors, (1511), 32 states have internal predecessors, (1511), 41 states have call successors, (964), 2 states have call predecessors, (964), 3 states have return successors, (966), 39 states have call predecessors, (966), 41 states have call successors, (966) [2024-11-18 15:26:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 6558 states and 10673 transitions. [2024-11-18 15:26:51,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2370 [2024-11-18 15:26:51,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:26:51,928 INFO L215 NwaCegarLoop]: trace histogram [357, 357, 357, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:26:51,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 15:26:52,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-18 15:26:52,129 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:26:52,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:26:52,133 INFO L85 PathProgramCache]: Analyzing trace with hash 133765220, now seen corresponding path program 1 times [2024-11-18 15:26:52,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:26:52,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843900222] [2024-11-18 15:26:52,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:26:52,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:26:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat