./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/sum_by_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/loops-crafted-1/sum_by_3.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 cbdeb806056afbf44cc985ff91f53f00e848d18cfefb92d1f6744eb19cf6d91b --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 14:13:40,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 14:13:40,140 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 14:13:40,147 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 14:13:40,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 14:13:40,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 14:13:40,170 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 14:13:40,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 14:13:40,171 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 14:13:40,171 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 14:13:40,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 14:13:40,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 14:13:40,172 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 14:13:40,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 14:13:40,174 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 14:13:40,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 14:13:40,176 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 14:13:40,176 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 14:13:40,177 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 14:13:40,177 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 14:13:40,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 14:13:40,178 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 14:13:40,181 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 14:13:40,181 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 14:13:40,181 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 14:13:40,182 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 14:13:40,182 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 14:13:40,182 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 14:13:40,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 14:13:40,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 14:13:40,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 14:13:40,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 14:13:40,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:13:40,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 14:13:40,184 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 14:13:40,184 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 14:13:40,186 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 14:13:40,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 14:13:40,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 14:13:40,186 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 14:13:40,187 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 14:13:40,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 14:13:40,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbdeb806056afbf44cc985ff91f53f00e848d18cfefb92d1f6744eb19cf6d91b [2024-11-08 14:13:40,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 14:13:40,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 14:13:40,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 14:13:40,441 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 14:13:40,441 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 14:13:40,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/sum_by_3.c [2024-11-08 14:13:41,852 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 14:13:42,025 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 14:13:42,025 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/sum_by_3.c [2024-11-08 14:13:42,032 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/557b1d359/47409444b8b3408dad5be7c5b2815ec3/FLAG40be272a0 [2024-11-08 14:13:42,429 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/557b1d359/47409444b8b3408dad5be7c5b2815ec3 [2024-11-08 14:13:42,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 14:13:42,432 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 14:13:42,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 14:13:42,433 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 14:13:42,437 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 14:13:42,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:13:42" (1/1) ... [2024-11-08 14:13:42,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@241bf0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42, skipping insertion in model container [2024-11-08 14:13:42,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:13:42" (1/1) ... [2024-11-08 14:13:42,454 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 14:13:42,636 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/loops-crafted-1/sum_by_3.c[406,419] [2024-11-08 14:13:42,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:13:42,661 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 14:13:42,671 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/loops-crafted-1/sum_by_3.c[406,419] [2024-11-08 14:13:42,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:13:42,687 INFO L204 MainTranslator]: Completed translation [2024-11-08 14:13:42,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42 WrapperNode [2024-11-08 14:13:42,688 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 14:13:42,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 14:13:42,689 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 14:13:42,689 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 14:13:42,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42" (1/1) ... [2024-11-08 14:13:42,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42" (1/1) ... [2024-11-08 14:13:42,716 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2024-11-08 14:13:42,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 14:13:42,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 14:13:42,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 14:13:42,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 14:13:42,725 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42" (1/1) ... [2024-11-08 14:13:42,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42" (1/1) ... [2024-11-08 14:13:42,726 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42" (1/1) ... [2024-11-08 14:13:42,734 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]. [2024-11-08 14:13:42,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42" (1/1) ... [2024-11-08 14:13:42,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42" (1/1) ... [2024-11-08 14:13:42,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42" (1/1) ... [2024-11-08 14:13:42,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42" (1/1) ... [2024-11-08 14:13:42,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42" (1/1) ... [2024-11-08 14:13:42,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42" (1/1) ... [2024-11-08 14:13:42,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 14:13:42,744 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 14:13:42,744 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 14:13:42,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 14:13:42,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42" (1/1) ... [2024-11-08 14:13:42,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:13:42,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:13:42,776 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) [2024-11-08 14:13:42,778 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 [2024-11-08 14:13:42,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 14:13:42,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 14:13:42,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 14:13:42,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 14:13:42,916 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 14:13:42,917 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 14:13:43,030 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-08 14:13:43,031 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 14:13:43,042 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 14:13:43,042 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 14:13:43,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:13:43 BoogieIcfgContainer [2024-11-08 14:13:43,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 14:13:43,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 14:13:43,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 14:13:43,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 14:13:43,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:13:42" (1/3) ... [2024-11-08 14:13:43,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f187c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:13:43, skipping insertion in model container [2024-11-08 14:13:43,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:13:42" (2/3) ... [2024-11-08 14:13:43,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f187c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:13:43, skipping insertion in model container [2024-11-08 14:13:43,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:13:43" (3/3) ... [2024-11-08 14:13:43,051 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_by_3.c [2024-11-08 14:13:43,067 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 14:13:43,067 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 14:13:43,113 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 14:13:43,120 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;@1260f41b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 14:13:43,120 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 14:13:43,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:43,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 14:13:43,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:13:43,133 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:13:43,134 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:13:43,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:13:43,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1645470860, now seen corresponding path program 1 times [2024-11-08 14:13:43,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:13:43,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184000438] [2024-11-08 14:13:43,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:13:43,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:13:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:13:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:13:43,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:13:43,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184000438] [2024-11-08 14:13:43,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184000438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:13:43,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:13:43,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 14:13:43,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542662419] [2024-11-08 14:13:43,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:13:43,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 14:13:43,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:13:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 14:13:43,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:13:43,324 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:13:43,334 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2024-11-08 14:13:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 14:13:43,335 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 14:13:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:13:43,340 INFO L225 Difference]: With dead ends: 28 [2024-11-08 14:13:43,340 INFO L226 Difference]: Without dead ends: 12 [2024-11-08 14:13:43,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:13:43,345 INFO L432 NwaCegarLoop]: 19 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, 19 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 [2024-11-08 14:13:43,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:13:43,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-08 14:13:43,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-08 14:13:43,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-11-08 14:13:43,366 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 11 [2024-11-08 14:13:43,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:13:43,367 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-08 14:13:43,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:43,367 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-11-08 14:13:43,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 14:13:43,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:13:43,368 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:13:43,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 14:13:43,368 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:13:43,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:13:43,369 INFO L85 PathProgramCache]: Analyzing trace with hash -26777608, now seen corresponding path program 1 times [2024-11-08 14:13:43,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:13:43,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314746906] [2024-11-08 14:13:43,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:13:43,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:13:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:13:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:13:44,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:13:44,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314746906] [2024-11-08 14:13:44,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314746906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:13:44,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:13:44,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 14:13:44,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203919241] [2024-11-08 14:13:44,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:13:44,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 14:13:44,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:13:44,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 14:13:44,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 14:13:44,228 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:44,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:13:44,337 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2024-11-08 14:13:44,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 14:13:44,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 14:13:44,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:13:44,339 INFO L225 Difference]: With dead ends: 27 [2024-11-08 14:13:44,339 INFO L226 Difference]: Without dead ends: 23 [2024-11-08 14:13:44,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-08 14:13:44,343 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:13:44,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 20 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:13:44,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-08 14:13:44,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2024-11-08 14:13:44,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-08 14:13:44,351 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2024-11-08 14:13:44,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:13:44,352 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-08 14:13:44,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:44,353 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-08 14:13:44,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 14:13:44,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:13:44,354 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:13:44,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 14:13:44,355 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:13:44,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:13:44,356 INFO L85 PathProgramCache]: Analyzing trace with hash 182012736, now seen corresponding path program 1 times [2024-11-08 14:13:44,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:13:44,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539185079] [2024-11-08 14:13:44,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:13:44,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:13:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:13:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:13:45,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:13:45,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539185079] [2024-11-08 14:13:45,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539185079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:13:45,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395554632] [2024-11-08 14:13:45,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:13:45,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:13:45,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:13:45,208 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) [2024-11-08 14:13:45,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 14:13:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:13:45,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 14:13:45,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:13:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:13:45,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:13:45,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:13:45,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395554632] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:13:45,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:13:45,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2024-11-08 14:13:45,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455101750] [2024-11-08 14:13:45,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:13:45,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 14:13:45,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:13:45,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 14:13:45,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-08 14:13:45,793 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:13:46,744 INFO L93 Difference]: Finished difference Result 57 states and 79 transitions. [2024-11-08 14:13:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 14:13:46,745 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-08 14:13:46,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:13:46,746 INFO L225 Difference]: With dead ends: 57 [2024-11-08 14:13:46,747 INFO L226 Difference]: Without dead ends: 42 [2024-11-08 14:13:46,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=399, Invalid=1241, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 14:13:46,749 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 132 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:13:46,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 22 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:13:46,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-08 14:13:46,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 24. [2024-11-08 14:13:46,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:46,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2024-11-08 14:13:46,770 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 12 [2024-11-08 14:13:46,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:13:46,771 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2024-11-08 14:13:46,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:46,772 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2024-11-08 14:13:46,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 14:13:46,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:13:46,774 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:13:46,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 14:13:46,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:13:46,979 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:13:46,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:13:46,979 INFO L85 PathProgramCache]: Analyzing trace with hash 133150594, now seen corresponding path program 1 times [2024-11-08 14:13:46,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:13:46,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991301000] [2024-11-08 14:13:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:13:46,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:13:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:13:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:13:47,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:13:47,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991301000] [2024-11-08 14:13:47,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991301000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:13:47,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603389826] [2024-11-08 14:13:47,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:13:47,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:13:47,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:13:47,200 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) [2024-11-08 14:13:47,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 14:13:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:13:47,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 14:13:47,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:13:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:13:47,280 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:13:47,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603389826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:13:47,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:13:47,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-08 14:13:47,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715998381] [2024-11-08 14:13:47,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:13:47,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 14:13:47,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:13:47,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 14:13:47,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:13:47,282 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:47,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:13:47,318 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2024-11-08 14:13:47,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 14:13:47,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-08 14:13:47,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:13:47,319 INFO L225 Difference]: With dead ends: 30 [2024-11-08 14:13:47,319 INFO L226 Difference]: Without dead ends: 20 [2024-11-08 14:13:47,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-08 14:13:47,321 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:13:47,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:13:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-08 14:13:47,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-08 14:13:47,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:47,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-08 14:13:47,332 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2024-11-08 14:13:47,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:13:47,332 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-08 14:13:47,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:47,333 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-08 14:13:47,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 14:13:47,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:13:47,334 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:13:47,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 14:13:47,534 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,SelfDestructingSolverStorable3 [2024-11-08 14:13:47,535 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:13:47,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:13:47,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1728071361, now seen corresponding path program 1 times [2024-11-08 14:13:47,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:13:47,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210901522] [2024-11-08 14:13:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:13:47,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:13:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:13:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:13:47,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:13:47,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210901522] [2024-11-08 14:13:47,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210901522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:13:47,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414661360] [2024-11-08 14:13:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:13:47,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:13:47,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:13:47,722 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:13:47,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 14:13:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:13:47,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 14:13:47,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:13:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:13:47,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:13:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:13:47,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414661360] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 14:13:47,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:13:47,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 7] total 12 [2024-11-08 14:13:47,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404064989] [2024-11-08 14:13:47,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:13:47,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 14:13:47,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:13:47,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 14:13:47,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-08 14:13:47,926 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:47,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:13:47,969 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2024-11-08 14:13:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 14:13:47,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-08 14:13:47,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:13:47,970 INFO L225 Difference]: With dead ends: 28 [2024-11-08 14:13:47,970 INFO L226 Difference]: Without dead ends: 16 [2024-11-08 14:13:47,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-08 14:13:47,971 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:13:47,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:13:47,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-08 14:13:47,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-08 14:13:47,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:47,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2024-11-08 14:13:47,976 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2024-11-08 14:13:47,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:13:47,976 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2024-11-08 14:13:47,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:47,976 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-11-08 14:13:47,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 14:13:47,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:13:47,977 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:13:47,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 14:13:48,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:13:48,178 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:13:48,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:13:48,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2104097272, now seen corresponding path program 2 times [2024-11-08 14:13:48,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:13:48,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653702665] [2024-11-08 14:13:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:13:48,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:13:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:13:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:13:48,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:13:48,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653702665] [2024-11-08 14:13:48,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653702665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:13:48,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414009555] [2024-11-08 14:13:48,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:13:48,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:13:48,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:13:48,843 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:13:48,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 14:13:48,901 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:13:48,902 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:13:48,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 14:13:48,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:13:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:13:49,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:13:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:13:49,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414009555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:13:49,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:13:49,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2024-11-08 14:13:49,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862525903] [2024-11-08 14:13:49,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:13:49,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 14:13:49,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:13:49,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 14:13:49,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2024-11-08 14:13:49,457 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:52,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:13:52,005 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2024-11-08 14:13:52,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 14:13:52,006 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-08 14:13:52,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:13:52,006 INFO L225 Difference]: With dead ends: 55 [2024-11-08 14:13:52,006 INFO L226 Difference]: Without dead ends: 22 [2024-11-08 14:13:52,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=440, Invalid=1452, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 14:13:52,008 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 218 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:13:52,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 29 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:13:52,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-08 14:13:52,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-08 14:13:52,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:52,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2024-11-08 14:13:52,014 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2024-11-08 14:13:52,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:13:52,014 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2024-11-08 14:13:52,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:13:52,015 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2024-11-08 14:13:52,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 14:13:52,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:13:52,015 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:13:52,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 14:13:52,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:13:52,220 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:13:52,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:13:52,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1486288120, now seen corresponding path program 3 times [2024-11-08 14:13:52,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:13:52,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695720692] [2024-11-08 14:13:52,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:13:52,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:13:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:13:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:13:53,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:13:53,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695720692] [2024-11-08 14:13:53,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695720692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:13:53,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456886594] [2024-11-08 14:13:53,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:13:53,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:13:53,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:13:53,142 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:13:53,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 14:13:53,313 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 14:13:53,314 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:13:53,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 14:13:53,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:13:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 14:13:53,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:13:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 14:13:59,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456886594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:13:59,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:13:59,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7, 7] total 27 [2024-11-08 14:13:59,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560776928] [2024-11-08 14:13:59,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:13:59,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 14:13:59,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:13:59,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 14:13:59,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2024-11-08 14:13:59,528 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:14:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:14:00,316 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-11-08 14:14:00,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 14:14:00,317 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-08 14:14:00,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:14:00,317 INFO L225 Difference]: With dead ends: 28 [2024-11-08 14:14:00,319 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 14:14:00,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=293, Invalid=1687, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 14:14:00,320 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:14:00,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 6 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:14:00,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 14:14:00,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 14:14:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:14:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 14:14:00,322 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2024-11-08 14:14:00,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:14:00,322 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 14:14:00,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:14:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 14:14:00,322 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 14:14:00,325 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 14:14:00,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 14:14:00,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:14:00,532 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2024-11-08 14:14:00,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-08 14:14:03,573 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 14:14:03,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 02:14:03 BoogieIcfgContainer [2024-11-08 14:14:03,599 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 14:14:03,601 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 14:14:03,601 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 14:14:03,601 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 14:14:03,603 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:13:43" (3/4) ... [2024-11-08 14:14:03,605 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 14:14:03,614 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-08 14:14:03,614 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-08 14:14:03,614 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-08 14:14:03,614 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 14:14:03,711 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-08 14:14:03,712 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-08 14:14:03,712 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 14:14:03,712 INFO L158 Benchmark]: Toolchain (without parser) took 21280.53ms. Allocated memory was 161.5MB in the beginning and 237.0MB in the end (delta: 75.5MB). Free memory was 92.4MB in the beginning and 88.3MB in the end (delta: 4.1MB). Peak memory consumption was 82.3MB. Max. memory is 16.1GB. [2024-11-08 14:14:03,712 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 113.2MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 14:14:03,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.57ms. Allocated memory is still 161.5MB. Free memory was 92.2MB in the beginning and 79.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 14:14:03,713 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.85ms. Allocated memory is still 161.5MB. Free memory was 79.7MB in the beginning and 78.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 14:14:03,713 INFO L158 Benchmark]: Boogie Preprocessor took 26.11ms. Allocated memory is still 161.5MB. Free memory was 78.3MB in the beginning and 76.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 14:14:03,713 INFO L158 Benchmark]: RCFGBuilder took 298.97ms. Allocated memory is still 161.5MB. Free memory was 76.7MB in the beginning and 127.3MB in the end (delta: -50.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-08 14:14:03,713 INFO L158 Benchmark]: TraceAbstraction took 20555.94ms. Allocated memory was 161.5MB in the beginning and 237.0MB in the end (delta: 75.5MB). Free memory was 126.4MB in the beginning and 92.5MB in the end (delta: 33.9MB). Peak memory consumption was 111.1MB. Max. memory is 16.1GB. [2024-11-08 14:14:03,714 INFO L158 Benchmark]: Witness Printer took 110.45ms. Allocated memory is still 237.0MB. Free memory was 92.5MB in the beginning and 88.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 14:14:03,715 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 113.2MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.57ms. Allocated memory is still 161.5MB. Free memory was 92.2MB in the beginning and 79.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.85ms. Allocated memory is still 161.5MB. Free memory was 79.7MB in the beginning and 78.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.11ms. Allocated memory is still 161.5MB. Free memory was 78.3MB in the beginning and 76.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 298.97ms. Allocated memory is still 161.5MB. Free memory was 76.7MB in the beginning and 127.3MB in the end (delta: -50.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 20555.94ms. Allocated memory was 161.5MB in the beginning and 237.0MB in the end (delta: 75.5MB). Free memory was 126.4MB in the beginning and 92.5MB in the end (delta: 33.9MB). Peak memory consumption was 111.1MB. Max. memory is 16.1GB. * Witness Printer took 110.45ms. Allocated memory is still 237.0MB. Free memory was 92.5MB in the beginning and 88.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 10]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.4s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 404 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 404 mSDsluCounter, 128 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 735 IncrementalHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 52 mSDtfsCounter, 735 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 255 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 174 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 220 ConstructedInterpolants, 10 QuantifiedInterpolants, 2888 SizeOfPredicates, 11 NumberOfNonLiveVariables, 244 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 101/218 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((((n <= i) && (((((long long) 3 * i) % 4294967296) / 3) <= 20000001)) && (((((((long long) 2 * j) + i) >= 0) ? ((((long long) 2 * j) + i) % 4294967296) : (((((long long) 2 * j) + i) % 4294967296) + 4294967296)) / 3) <= 20000001)) && (SIZE == 20000001)) && (n <= ((j >= 0) ? (j % 4294967296) : ((j % 4294967296) + 4294967296)))) || ((((i == 0) && (n <= 20000001)) && (SIZE == 20000001)) && ((((unsigned) ((j >= 0) ? (j % 2147483648) : ((j % 2147483648) + 2147483648)) * 2) / 3) <= 20000001))) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((i == 0) && (n <= 20000001)) && (SIZE == 20000001)) || (((n <= 20000001) && (SIZE == 20000001)) && (((4294967295 + i) % 4294967296) <= 20000000))) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((((((((((long long) 3 * i) % 4294967296) / 3) <= 20000001) && (n <= k)) && ((n < ((long long) i + 1)) || ((((3 + ((long long) 3 * i)) % 4294967296) / 3) < 20000002))) && (((((((long long) i + j) + k) >= 0) ? ((((long long) i + j) + k) % 4294967296) : (((((long long) i + j) + k) % 4294967296) + 4294967296)) / 3) <= 20000001)) && (((((((long long) 2 * j) + i) >= 0) ? ((((long long) 2 * j) + i) % 4294967296) : (((((long long) 2 * j) + i) % 4294967296) + 4294967296)) / 3) <= 20000001)) && (SIZE == 20000001)) && (n <= ((j >= 0) ? (j % 4294967296) : ((j % 4294967296) + 4294967296)))) || (((((i == 0) && (n <= 20000001)) && ((((((long long) j + k) >= 0) ? (((long long) j + k) % 4294967296) : ((((long long) j + k) % 4294967296) + 4294967296)) / 3) <= 20000001)) && (SIZE == 20000001)) && ((((unsigned) ((j >= 0) ? (j % 2147483648) : ((j % 2147483648) + 2147483648)) * 2) / 3) <= 20000001))) RESULT: Ultimate proved your program to be correct! [2024-11-08 14:14:03,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE