./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test23-2.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/ldv-regression/test23-2.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 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 13:48:40,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 13:48:40,896 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 13:48:40,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 13:48:40,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 13:48:40,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 13:48:40,932 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 13:48:40,932 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 13:48:40,933 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 13:48:40,933 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 13:48:40,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 13:48:40,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 13:48:40,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 13:48:40,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 13:48:40,936 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 13:48:40,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 13:48:40,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 13:48:40,937 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 13:48:40,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 13:48:40,938 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 13:48:40,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 13:48:40,939 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 13:48:40,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 13:48:40,939 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 13:48:40,940 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 13:48:40,940 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 13:48:40,940 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 13:48:40,941 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 13:48:40,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 13:48:40,941 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 13:48:40,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 13:48:40,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 13:48:40,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 13:48:40,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 13:48:40,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 13:48:40,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 13:48:40,944 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 13:48:40,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 13:48:40,945 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 13:48:40,945 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 13:48:40,945 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 13:48:40,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 13:48:40,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 [2024-11-08 13:48:41,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 13:48:41,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 13:48:41,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 13:48:41,197 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 13:48:41,197 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 13:48:41,198 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test23-2.c [2024-11-08 13:48:42,681 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 13:48:42,857 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 13:48:42,858 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-2.c [2024-11-08 13:48:42,865 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b5cf28e9/6b927cc49ea544f183989b85ac5aa202/FLAG14ae7c437 [2024-11-08 13:48:42,877 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b5cf28e9/6b927cc49ea544f183989b85ac5aa202 [2024-11-08 13:48:42,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 13:48:42,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 13:48:42,883 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 13:48:42,884 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 13:48:42,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 13:48:42,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 01:48:42" (1/1) ... [2024-11-08 13:48:42,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e27d655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:42, skipping insertion in model container [2024-11-08 13:48:42,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 01:48:42" (1/1) ... [2024-11-08 13:48:42,912 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 13:48:43,107 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/ldv-regression/test23-2.c[1070,1083] [2024-11-08 13:48:43,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 13:48:43,129 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 13:48:43,152 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/ldv-regression/test23-2.c[1070,1083] [2024-11-08 13:48:43,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 13:48:43,185 INFO L204 MainTranslator]: Completed translation [2024-11-08 13:48:43,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:43 WrapperNode [2024-11-08 13:48:43,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 13:48:43,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 13:48:43,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 13:48:43,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 13:48:43,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:43" (1/1) ... [2024-11-08 13:48:43,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:43" (1/1) ... [2024-11-08 13:48:43,235 INFO L138 Inliner]: procedures = 16, calls = 57, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 113 [2024-11-08 13:48:43,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 13:48:43,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 13:48:43,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 13:48:43,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 13:48:43,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:43" (1/1) ... [2024-11-08 13:48:43,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:43" (1/1) ... [2024-11-08 13:48:43,249 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:43" (1/1) ... [2024-11-08 13:48:43,264 INFO L175 MemorySlicer]: Split 46 memory accesses to 2 slices as follows [2, 44]. 96 percent of accesses are in the largest equivalence class. The 38 initializations are split as follows [2, 36]. The 5 writes are split as follows [0, 5]. [2024-11-08 13:48:43,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:43" (1/1) ... [2024-11-08 13:48:43,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:43" (1/1) ... [2024-11-08 13:48:43,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:43" (1/1) ... [2024-11-08 13:48:43,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:43" (1/1) ... [2024-11-08 13:48:43,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:43" (1/1) ... [2024-11-08 13:48:43,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:43" (1/1) ... [2024-11-08 13:48:43,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 13:48:43,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 13:48:43,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 13:48:43,278 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 13:48:43,283 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:43" (1/1) ... [2024-11-08 13:48:43,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 13:48:43,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:48:43,329 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 13:48:43,338 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 13:48:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 13:48:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 13:48:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 13:48:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 13:48:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 13:48:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2024-11-08 13:48:43,380 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2024-11-08 13:48:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 13:48:43,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 13:48:43,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 13:48:43,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 13:48:43,483 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 13:48:43,485 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 13:48:43,708 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-08 13:48:43,712 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 13:48:43,723 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 13:48:43,725 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 13:48:43,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 01:48:43 BoogieIcfgContainer [2024-11-08 13:48:43,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 13:48:43,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 13:48:43,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 13:48:43,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 13:48:43,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 01:48:42" (1/3) ... [2024-11-08 13:48:43,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69861450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 01:48:43, skipping insertion in model container [2024-11-08 13:48:43,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:48:43" (2/3) ... [2024-11-08 13:48:43,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69861450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 01:48:43, skipping insertion in model container [2024-11-08 13:48:43,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 01:48:43" (3/3) ... [2024-11-08 13:48:43,736 INFO L112 eAbstractionObserver]: Analyzing ICFG test23-2.c [2024-11-08 13:48:43,754 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 13:48:43,756 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 13:48:43,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 13:48:43,829 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;@429d850, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 13:48:43,829 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 13:48:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 13:48:43,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 13:48:43,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:48:43,842 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:48:43,843 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:48:43,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:48:43,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1478003781, now seen corresponding path program 1 times [2024-11-08 13:48:43,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:48:43,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352166837] [2024-11-08 13:48:43,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:48:43,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:48:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:48:44,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 13:48:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:48:44,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 13:48:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:48:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 13:48:44,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:48:44,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352166837] [2024-11-08 13:48:44,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352166837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 13:48:44,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 13:48:44,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 13:48:44,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945560152] [2024-11-08 13:48:44,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 13:48:44,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 13:48:44,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:48:44,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 13:48:44,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 13:48:44,133 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 13:48:44,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:48:44,165 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-11-08 13:48:44,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 13:48:44,166 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-08 13:48:44,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:48:44,171 INFO L225 Difference]: With dead ends: 31 [2024-11-08 13:48:44,172 INFO L226 Difference]: Without dead ends: 18 [2024-11-08 13:48:44,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 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 13:48:44,176 INFO L432 NwaCegarLoop]: 24 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, 24 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 13:48:44,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 13:48:44,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-08 13:48:44,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-08 13:48:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 13:48:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-08 13:48:44,219 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 19 [2024-11-08 13:48:44,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:48:44,220 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-08 13:48:44,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 13:48:44,221 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-08 13:48:44,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 13:48:44,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:48:44,222 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:48:44,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 13:48:44,223 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:48:44,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:48:44,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1220515189, now seen corresponding path program 1 times [2024-11-08 13:48:44,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:48:44,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556688062] [2024-11-08 13:48:44,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:48:44,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:48:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:48:46,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 13:48:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:48:46,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 13:48:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:48:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:48:46,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:48:46,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556688062] [2024-11-08 13:48:46,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556688062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 13:48:46,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 13:48:46,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 13:48:46,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683930951] [2024-11-08 13:48:46,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 13:48:46,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 13:48:46,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:48:46,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 13:48:46,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 13:48:46,439 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 13:48:46,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:48:46,627 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-08 13:48:46,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 13:48:46,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-08 13:48:46,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:48:46,628 INFO L225 Difference]: With dead ends: 25 [2024-11-08 13:48:46,629 INFO L226 Difference]: Without dead ends: 20 [2024-11-08 13:48:46,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-08 13:48:46,632 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 13:48:46,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 63 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 13:48:46,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-08 13:48:46,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-08 13:48:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 13:48:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-08 13:48:46,641 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 20 [2024-11-08 13:48:46,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:48:46,642 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-08 13:48:46,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 13:48:46,642 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-08 13:48:46,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 13:48:46,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:48:46,644 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:48:46,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 13:48:46,644 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:48:46,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:48:46,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1898823162, now seen corresponding path program 1 times [2024-11-08 13:48:46,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:48:46,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126158106] [2024-11-08 13:48:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:48:46,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:48:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:48:47,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 13:48:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:48:47,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 13:48:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:48:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:48:47,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:48:47,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126158106] [2024-11-08 13:48:47,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126158106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:48:47,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294611178] [2024-11-08 13:48:47,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:48:47,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:48:47,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:48:47,859 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 13:48:47,862 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 13:48:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:48:47,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 13:48:47,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:48:48,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2024-11-08 13:48:48,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:48:48,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 12 [2024-11-08 13:48:48,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 13:48:48,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:48:48,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 13:48:48,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294611178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:48:48,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:48:48,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2024-11-08 13:48:48,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523963892] [2024-11-08 13:48:48,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:48:48,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 13:48:48,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:48:48,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 13:48:48,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-08 13:48:48,255 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 13:48:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:48:48,609 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2024-11-08 13:48:48,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 13:48:48,609 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 22 [2024-11-08 13:48:48,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:48:48,610 INFO L225 Difference]: With dead ends: 31 [2024-11-08 13:48:48,611 INFO L226 Difference]: Without dead ends: 26 [2024-11-08 13:48:48,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2024-11-08 13:48:48,613 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 13:48:48,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 79 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 13:48:48,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-08 13:48:48,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-08 13:48:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 13:48:48,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2024-11-08 13:48:48,623 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2024-11-08 13:48:48,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:48:48,623 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2024-11-08 13:48:48,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 13:48:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2024-11-08 13:48:48,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-08 13:48:48,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:48:48,625 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:48:48,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 13:48:48,829 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 13:48:48,830 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:48:48,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:48:48,831 INFO L85 PathProgramCache]: Analyzing trace with hash -974313463, now seen corresponding path program 2 times [2024-11-08 13:48:48,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:48:48,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142513536] [2024-11-08 13:48:48,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:48:48,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:48:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:48:50,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 13:48:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:48:50,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 13:48:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:48:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:48:50,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:48:50,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142513536] [2024-11-08 13:48:50,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142513536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:48:50,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811411175] [2024-11-08 13:48:50,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 13:48:50,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:48:50,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:48:50,456 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 13:48:50,459 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 13:48:50,559 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 13:48:50,560 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 13:48:50,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 13:48:50,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:48:50,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 85 [2024-11-08 13:48:50,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 18 [2024-11-08 13:48:50,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 148 [2024-11-08 13:48:50,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 93 [2024-11-08 13:48:56,680 INFO L349 Elim1Store]: treesize reduction 15, result has 65.9 percent of original size [2024-11-08 13:48:56,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 107 [2024-11-08 13:48:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 13:48:56,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:48:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 13:48:57,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811411175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:48:57,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:48:57,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 24 [2024-11-08 13:48:57,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613578628] [2024-11-08 13:48:57,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:48:57,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 13:48:57,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:48:57,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 13:48:57,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=445, Unknown=3, NotChecked=0, Total=552 [2024-11-08 13:48:57,144 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 13:48:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:48:59,071 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-11-08 13:48:59,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 13:48:59,073 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-11-08 13:48:59,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:48:59,074 INFO L225 Difference]: With dead ends: 43 [2024-11-08 13:48:59,074 INFO L226 Difference]: Without dead ends: 38 [2024-11-08 13:48:59,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=479, Invalid=1680, Unknown=3, NotChecked=0, Total=2162 [2024-11-08 13:48:59,076 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 13:48:59,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 123 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 13:48:59,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-08 13:48:59,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-08 13:48:59,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 13:48:59,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2024-11-08 13:48:59,096 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 28 [2024-11-08 13:48:59,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:48:59,096 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2024-11-08 13:48:59,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 13:48:59,097 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2024-11-08 13:48:59,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 13:48:59,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:48:59,098 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:48:59,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 13:48:59,298 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 13:48:59,299 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:48:59,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:48:59,299 INFO L85 PathProgramCache]: Analyzing trace with hash 638604903, now seen corresponding path program 3 times [2024-11-08 13:48:59,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:48:59,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395541311] [2024-11-08 13:48:59,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:48:59,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:48:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:49:01,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 13:49:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:49:01,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 13:49:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:49:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 13:49:01,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:49:01,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395541311] [2024-11-08 13:49:01,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395541311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:49:01,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877387214] [2024-11-08 13:49:01,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 13:49:01,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:49:01,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:49:01,153 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 13:49:01,158 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 13:49:01,265 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 13:49:01,265 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 13:49:01,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 13:49:01,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:49:01,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-08 13:49:10,444 INFO L349 Elim1Store]: treesize reduction 78, result has 48.3 percent of original size [2024-11-08 13:49:10,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 162 treesize of output 150 [2024-11-08 13:49:10,920 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-08 13:49:10,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:49:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-08 13:49:11,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877387214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:49:11,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:49:11,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 29 [2024-11-08 13:49:11,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820039787] [2024-11-08 13:49:11,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:49:11,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 13:49:11,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:49:11,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 13:49:11,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=736, Unknown=2, NotChecked=0, Total=812 [2024-11-08 13:49:11,320 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 29 states, 29 states have (on average 2.0) internal successors, (58), 29 states have internal predecessors, (58), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 13:49:21,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 13:49:29,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 13:49:42,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:49:42,162 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-11-08 13:49:42,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 13:49:42,163 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0) internal successors, (58), 29 states have internal predecessors, (58), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2024-11-08 13:49:42,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:49:42,163 INFO L225 Difference]: With dead ends: 40 [2024-11-08 13:49:42,163 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 13:49:42,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=382, Invalid=2692, Unknown=6, NotChecked=0, Total=3080 [2024-11-08 13:49:42,165 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 60 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-11-08 13:49:42,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 152 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 479 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2024-11-08 13:49:42,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 13:49:42,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 13:49:42,166 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 13:49:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 13:49:42,166 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2024-11-08 13:49:42,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:49:42,166 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 13:49:42,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0) internal successors, (58), 29 states have internal predecessors, (58), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 13:49:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 13:49:42,167 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 13:49:42,169 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 13:49:42,188 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 13:49:42,374 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 13:49:42,377 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-08 13:49:42,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-08 13:49:42,575 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 13:49:42,584 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#d2~0!offset [2024-11-08 13:49:42,587 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-08 13:49:42,587 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-08 13:49:42,587 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~pd2~0!base,]]] [2024-11-08 13:49:42,587 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pd2~0!offset [2024-11-08 13:49:42,588 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pa~0!offset [2024-11-08 13:49:42,588 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pd2~0!offset [2024-11-08 13:49:42,588 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pa~0!offset [2024-11-08 13:49:42,588 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#d1~0!offset [2024-11-08 13:49:42,589 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pa~0!base [2024-11-08 13:49:42,589 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pd2~0!base [2024-11-08 13:49:42,589 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pd1~0!offset [2024-11-08 13:49:42,589 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pd2~0!offset [2024-11-08 13:49:42,589 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~pd1~0!offset [2024-11-08 13:49:42,590 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-08 13:49:42,590 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-08 13:49:42,590 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~pa~0!base,]]] [2024-11-08 13:49:42,594 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#d2~0!offset [2024-11-08 13:49:42,595 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#d1~0!offset [2024-11-08 13:49:42,595 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#d2~0!offset [2024-11-08 13:49:42,595 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #res!offset [2024-11-08 13:49:42,595 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#d1~0!offset [2024-11-08 13:49:42,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 01:49:42 BoogieIcfgContainer [2024-11-08 13:49:42,600 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 13:49:42,600 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 13:49:42,600 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 13:49:42,601 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 13:49:42,601 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 01:48:43" (3/4) ... [2024-11-08 13:49:42,603 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 13:49:42,606 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2024-11-08 13:49:42,612 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-08 13:49:42,612 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-08 13:49:42,613 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-08 13:49:42,613 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 13:49:42,693 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-08 13:49:42,694 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-08 13:49:42,694 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 13:49:42,695 INFO L158 Benchmark]: Toolchain (without parser) took 59814.02ms. Allocated memory was 172.0MB in the beginning and 358.6MB in the end (delta: 186.6MB). Free memory was 112.3MB in the beginning and 223.8MB in the end (delta: -111.5MB). Peak memory consumption was 75.4MB. Max. memory is 16.1GB. [2024-11-08 13:49:42,695 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 172.0MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 13:49:42,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.97ms. Allocated memory is still 172.0MB. Free memory was 112.3MB in the beginning and 99.0MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 13:49:42,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.75ms. Allocated memory is still 172.0MB. Free memory was 99.0MB in the beginning and 96.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 13:49:42,696 INFO L158 Benchmark]: Boogie Preprocessor took 41.03ms. Allocated memory is still 172.0MB. Free memory was 96.9MB in the beginning and 94.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 13:49:42,696 INFO L158 Benchmark]: RCFGBuilder took 447.91ms. Allocated memory is still 172.0MB. Free memory was 94.8MB in the beginning and 80.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 13:49:42,696 INFO L158 Benchmark]: TraceAbstraction took 58871.25ms. Allocated memory was 172.0MB in the beginning and 358.6MB in the end (delta: 186.6MB). Free memory was 79.4MB in the beginning and 229.1MB in the end (delta: -149.6MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-11-08 13:49:42,696 INFO L158 Benchmark]: Witness Printer took 93.87ms. Allocated memory is still 358.6MB. Free memory was 229.1MB in the beginning and 223.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 13:49:42,697 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 172.0MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.97ms. Allocated memory is still 172.0MB. Free memory was 112.3MB in the beginning and 99.0MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.75ms. Allocated memory is still 172.0MB. Free memory was 99.0MB in the beginning and 96.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.03ms. Allocated memory is still 172.0MB. Free memory was 96.9MB in the beginning and 94.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 447.91ms. Allocated memory is still 172.0MB. Free memory was 94.8MB in the beginning and 80.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 58871.25ms. Allocated memory was 172.0MB in the beginning and 358.6MB in the end (delta: 186.6MB). Free memory was 79.4MB in the beginning and 229.1MB in the end (delta: -149.6MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 93.87ms. Allocated memory is still 358.6MB. Free memory was 229.1MB in the beginning and 223.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#d2~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~pd2~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pd2~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pa~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pd2~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pa~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#d1~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pa~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pd2~0!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pd1~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pd2~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~pd1~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~pa~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#d2~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#d1~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#d2~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #res!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#d1~0!offset * 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: 52]: 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 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.6s, OverallIterations: 5, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 33.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 152 SdHoareTripleChecker+Valid, 9.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 149 mSDsluCounter, 441 SdHoareTripleChecker+Invalid, 8.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 369 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 702 IncrementalHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 72 mSDtfsCounter, 702 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 310 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 39.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=4, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 23.5s InterpolantComputationTime, 219 NumberOfCodeBlocks, 203 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 298 ConstructedInterpolants, 12 QuantifiedInterpolants, 4211 SizeOfPredicates, 32 NumberOfNonLiveVariables, 653 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 214/429 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: 42]: Loop Invariant Derived loop invariant: null - ProcedureContractResult [Line: 23]: Procedure Contract for get_dummy Derived contract for procedure get_dummy. Ensures: ((d1 == \old(d1)) && (d2 == \old(d2))) RESULT: Ultimate proved your program to be correct! [2024-11-08 13:49:42,814 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