./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 14:25:37,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 14:25:37,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 14:25:37,936 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 14:25:37,936 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 14:25:37,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 14:25:37,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 14:25:37,955 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 14:25:37,956 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 14:25:37,956 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 14:25:37,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 14:25:37,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 14:25:37,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 14:25:37,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 14:25:37,958 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 14:25:37,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 14:25:37,959 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 14:25:37,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 14:25:37,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 14:25:37,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 14:25:37,960 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 14:25:37,964 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 14:25:37,964 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 14:25:37,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 14:25:37,965 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 14:25:37,965 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 14:25:37,965 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 14:25:37,966 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 14:25:37,966 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 14:25:37,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 14:25:37,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 14:25:37,967 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 14:25:37,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 14:25:37,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:25:37,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 14:25:37,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 14:25:37,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 14:25:37,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 14:25:37,968 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 14:25:37,969 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 14:25:37,969 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 14:25:37,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 14:25:37,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 [2024-11-20 14:25:38,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 14:25:38,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 14:25:38,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 14:25:38,227 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 14:25:38,227 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 14:25:38,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2024-11-20 14:25:39,680 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 14:25:39,870 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 14:25:39,871 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2024-11-20 14:25:39,878 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50f733db6/0f5d4eba7d114932b119125b2f8c4ce5/FLAG69e4d486f [2024-11-20 14:25:39,889 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50f733db6/0f5d4eba7d114932b119125b2f8c4ce5 [2024-11-20 14:25:39,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 14:25:39,893 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 14:25:39,894 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 14:25:39,894 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 14:25:39,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 14:25:39,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:25:39" (1/1) ... [2024-11-20 14:25:39,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@491ad7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:39, skipping insertion in model container [2024-11-20 14:25:39,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:25:39" (1/1) ... [2024-11-20 14:25:39,922 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 14:25:40,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:25:40,153 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 14:25:40,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:25:40,235 INFO L204 MainTranslator]: Completed translation [2024-11-20 14:25:40,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:40 WrapperNode [2024-11-20 14:25:40,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 14:25:40,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 14:25:40,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 14:25:40,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 14:25:40,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:40" (1/1) ... [2024-11-20 14:25:40,251 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:40" (1/1) ... [2024-11-20 14:25:40,274 INFO L138 Inliner]: procedures = 18, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 166 [2024-11-20 14:25:40,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 14:25:40,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 14:25:40,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 14:25:40,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 14:25:40,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:40" (1/1) ... [2024-11-20 14:25:40,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:40" (1/1) ... [2024-11-20 14:25:40,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:40" (1/1) ... [2024-11-20 14:25:40,300 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 9, 3]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2024-11-20 14:25:40,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:40" (1/1) ... [2024-11-20 14:25:40,300 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:40" (1/1) ... [2024-11-20 14:25:40,310 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:40" (1/1) ... [2024-11-20 14:25:40,315 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:40" (1/1) ... [2024-11-20 14:25:40,317 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:40" (1/1) ... [2024-11-20 14:25:40,318 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:40" (1/1) ... [2024-11-20 14:25:40,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 14:25:40,321 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 14:25:40,321 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 14:25:40,322 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 14:25:40,322 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:40" (1/1) ... [2024-11-20 14:25:40,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:25:40,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:25:40,361 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) [2024-11-20 14:25:40,365 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 [2024-11-20 14:25:40,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 14:25:40,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 14:25:40,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 14:25:40,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 14:25:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 14:25:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 14:25:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 14:25:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 14:25:40,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 14:25:40,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 14:25:40,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 14:25:40,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 14:25:40,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 14:25:40,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-20 14:25:40,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-20 14:25:40,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 14:25:40,514 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 14:25:40,516 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 14:25:40,901 INFO L? ?]: Removed 86 outVars from TransFormulas that were not future-live. [2024-11-20 14:25:40,901 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 14:25:40,918 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 14:25:40,920 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-20 14:25:40,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:25:40 BoogieIcfgContainer [2024-11-20 14:25:40,921 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 14:25:40,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 14:25:40,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 14:25:40,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 14:25:40,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:25:39" (1/3) ... [2024-11-20 14:25:40,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf640bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:25:40, skipping insertion in model container [2024-11-20 14:25:40,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:40" (2/3) ... [2024-11-20 14:25:40,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf640bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:25:40, skipping insertion in model container [2024-11-20 14:25:40,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:25:40" (3/3) ... [2024-11-20 14:25:40,930 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2024-11-20 14:25:40,947 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 14:25:40,947 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-20 14:25:40,997 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 14:25:41,004 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=None, 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;@1d61168d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 14:25:41,005 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-20 14:25:41,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 62 states have (on average 1.8064516129032258) internal successors, (112), 88 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:25:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 14:25:41,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:25:41,017 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 14:25:41,017 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:25:41,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:25:41,024 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2024-11-20 14:25:41,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:25:41,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223414212] [2024-11-20 14:25:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:41,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:25:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:25:41,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:25:41,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223414212] [2024-11-20 14:25:41,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223414212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:25:41,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:25:41,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:25:41,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427702682] [2024-11-20 14:25:41,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:25:41,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:25:41,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:25:41,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:25:41,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:25:41,310 INFO L87 Difference]: Start difference. First operand has 93 states, 62 states have (on average 1.8064516129032258) internal successors, (112), 88 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-20 14:25:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:25:41,432 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2024-11-20 14:25:41,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:25:41,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-11-20 14:25:41,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:25:41,448 INFO L225 Difference]: With dead ends: 85 [2024-11-20 14:25:41,449 INFO L226 Difference]: Without dead ends: 83 [2024-11-20 14:25:41,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:25:41,454 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 70 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:25:41,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 78 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:25:41,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-20 14:25:41,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-20 14:25:41,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 60 states have (on average 1.5) internal successors, (90), 78 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:25:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2024-11-20 14:25:41,507 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 4 [2024-11-20 14:25:41,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:25:41,507 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2024-11-20 14:25:41,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-20 14:25:41,508 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2024-11-20 14:25:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 14:25:41,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:25:41,509 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 14:25:41,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 14:25:41,510 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:25:41,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:25:41,511 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2024-11-20 14:25:41,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:25:41,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98334670] [2024-11-20 14:25:41,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:41,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:25:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:41,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:25:41,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:25:41,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98334670] [2024-11-20 14:25:41,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98334670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:25:41,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:25:41,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:25:41,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141379726] [2024-11-20 14:25:41,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:25:41,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:25:41,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:25:41,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:25:41,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:25:41,623 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-20 14:25:41,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:25:41,703 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2024-11-20 14:25:41,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:25:41,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-11-20 14:25:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:25:41,705 INFO L225 Difference]: With dead ends: 87 [2024-11-20 14:25:41,705 INFO L226 Difference]: Without dead ends: 87 [2024-11-20 14:25:41,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:25:41,706 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 2 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:25:41,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 144 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:25:41,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-20 14:25:41,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2024-11-20 14:25:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 80 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:25:41,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2024-11-20 14:25:41,717 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 4 [2024-11-20 14:25:41,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:25:41,717 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2024-11-20 14:25:41,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-20 14:25:41,718 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2024-11-20 14:25:41,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-20 14:25:41,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:25:41,718 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-20 14:25:41,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 14:25:41,719 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:25:41,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:25:41,719 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2024-11-20 14:25:41,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:25:41,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961781830] [2024-11-20 14:25:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:41,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:25:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:25:41,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:25:41,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961781830] [2024-11-20 14:25:41,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961781830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:25:41,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158782074] [2024-11-20 14:25:41,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:41,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:25:41,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:25:41,925 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) [2024-11-20 14:25:41,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 14:25:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:41,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 14:25:41,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:25:42,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-20 14:25:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:25:42,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:25:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:25:42,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158782074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:25:42,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:25:42,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-20 14:25:42,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999210273] [2024-11-20 14:25:42,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:25:42,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 14:25:42,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:25:42,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 14:25:42,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-20 14:25:42,295 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) [2024-11-20 14:25:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:25:42,611 INFO L93 Difference]: Finished difference Result 104 states and 120 transitions. [2024-11-20 14:25:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 14:25:42,612 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) Word has length 8 [2024-11-20 14:25:42,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:25:42,613 INFO L225 Difference]: With dead ends: 104 [2024-11-20 14:25:42,613 INFO L226 Difference]: Without dead ends: 104 [2024-11-20 14:25:42,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-20 14:25:42,614 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 33 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:25:42,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 336 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:25:42,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-20 14:25:42,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2024-11-20 14:25:42,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 79 states have (on average 1.4050632911392404) internal successors, (111), 96 states have internal predecessors, (111), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:25:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2024-11-20 14:25:42,628 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 8 [2024-11-20 14:25:42,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:25:42,629 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2024-11-20 14:25:42,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) [2024-11-20 14:25:42,629 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2024-11-20 14:25:42,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-20 14:25:42,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:25:42,630 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:25:42,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 14:25:42,830 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 [2024-11-20 14:25:42,831 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:25:42,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:25:42,832 INFO L85 PathProgramCache]: Analyzing trace with hash 868182692, now seen corresponding path program 1 times [2024-11-20 14:25:42,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:25:42,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631980349] [2024-11-20 14:25:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:42,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:25:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-20 14:25:42,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:25:42,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631980349] [2024-11-20 14:25:42,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631980349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:25:42,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:25:42,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:25:42,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576257209] [2024-11-20 14:25:42,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:25:42,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:25:42,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:25:42,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:25:42,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:25:42,966 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-20 14:25:43,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:25:43,018 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2024-11-20 14:25:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:25:43,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 23 [2024-11-20 14:25:43,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:25:43,020 INFO L225 Difference]: With dead ends: 113 [2024-11-20 14:25:43,020 INFO L226 Difference]: Without dead ends: 113 [2024-11-20 14:25:43,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:25:43,021 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 36 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:25:43,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 187 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:25:43,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-20 14:25:43,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2024-11-20 14:25:43,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 86 states have (on average 1.4069767441860466) internal successors, (121), 101 states have internal predecessors, (121), 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) [2024-11-20 14:25:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2024-11-20 14:25:43,032 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 23 [2024-11-20 14:25:43,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:25:43,032 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2024-11-20 14:25:43,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-20 14:25:43,032 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2024-11-20 14:25:43,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-20 14:25:43,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:25:43,033 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:25:43,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 14:25:43,033 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:25:43,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:25:43,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1143818169, now seen corresponding path program 1 times [2024-11-20 14:25:43,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:25:43,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068763236] [2024-11-20 14:25:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:43,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:25:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:43,130 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-20 14:25:43,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:25:43,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068763236] [2024-11-20 14:25:43,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068763236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:25:43,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:25:43,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:25:43,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644687409] [2024-11-20 14:25:43,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:25:43,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:25:43,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:25:43,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:25:43,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:25:43,136 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-20 14:25:43,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:25:43,167 INFO L93 Difference]: Finished difference Result 102 states and 121 transitions. [2024-11-20 14:25:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:25:43,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 24 [2024-11-20 14:25:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:25:43,169 INFO L225 Difference]: With dead ends: 102 [2024-11-20 14:25:43,169 INFO L226 Difference]: Without dead ends: 102 [2024-11-20 14:25:43,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:25:43,170 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 53 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:25:43,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 78 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:25:43,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-20 14:25:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-20 14:25:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 86 states have (on average 1.3604651162790697) internal successors, (117), 98 states have internal predecessors, (117), 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) [2024-11-20 14:25:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2024-11-20 14:25:43,185 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 24 [2024-11-20 14:25:43,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:25:43,185 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2024-11-20 14:25:43,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-20 14:25:43,185 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2024-11-20 14:25:43,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-20 14:25:43,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:25:43,186 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:25:43,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 14:25:43,186 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:25:43,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:25:43,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1143818170, now seen corresponding path program 1 times [2024-11-20 14:25:43,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:25:43,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714071107] [2024-11-20 14:25:43,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:43,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:25:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:25:43,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:25:43,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714071107] [2024-11-20 14:25:43,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714071107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:25:43,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878524055] [2024-11-20 14:25:43,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:43,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:25:43,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:25:43,303 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) [2024-11-20 14:25:43,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 14:25:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:43,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 14:25:43,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:25:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:25:43,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:25:43,556 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:25:43,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878524055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:25:43,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:25:43,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-20 14:25:43,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844070767] [2024-11-20 14:25:43,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:25:43,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 14:25:43,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:25:43,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 14:25:43,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-20 14:25:43,559 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 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) [2024-11-20 14:25:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:25:43,785 INFO L93 Difference]: Finished difference Result 346 states and 465 transitions. [2024-11-20 14:25:43,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 14:25:43,786 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 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 24 [2024-11-20 14:25:43,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:25:43,788 INFO L225 Difference]: With dead ends: 346 [2024-11-20 14:25:43,789 INFO L226 Difference]: Without dead ends: 346 [2024-11-20 14:25:43,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-20 14:25:43,793 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 294 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:25:43,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 401 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:25:43,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-20 14:25:43,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 126. [2024-11-20 14:25:43,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 110 states have (on average 1.2818181818181817) internal successors, (141), 122 states have internal predecessors, (141), 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) [2024-11-20 14:25:43,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 145 transitions. [2024-11-20 14:25:43,819 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 145 transitions. Word has length 24 [2024-11-20 14:25:43,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:25:43,819 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 145 transitions. [2024-11-20 14:25:43,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 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) [2024-11-20 14:25:43,820 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 145 transitions. [2024-11-20 14:25:43,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-20 14:25:43,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:25:43,822 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:25:43,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 14:25:44,025 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,SelfDestructingSolverStorable5 [2024-11-20 14:25:44,026 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:25:44,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:25:44,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1405730636, now seen corresponding path program 2 times [2024-11-20 14:25:44,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:25:44,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147842793] [2024-11-20 14:25:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:44,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:25:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:44,282 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:25:44,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:25:44,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147842793] [2024-11-20 14:25:44,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147842793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:25:44,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702145707] [2024-11-20 14:25:44,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:25:44,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:25:44,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:25:44,286 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) [2024-11-20 14:25:44,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 14:25:44,342 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 14:25:44,342 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:25:44,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 14:25:44,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:25:44,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-20 14:25:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-20 14:25:44,379 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:25:44,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702145707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:25:44,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 14:25:44,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 14 [2024-11-20 14:25:44,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740710273] [2024-11-20 14:25:44,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:25:44,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:25:44,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:25:44,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:25:44,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-20 14:25:44,381 INFO L87 Difference]: Start difference. First operand 126 states and 145 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-20 14:25:44,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:25:44,421 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2024-11-20 14:25:44,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:25:44,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 48 [2024-11-20 14:25:44,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:25:44,422 INFO L225 Difference]: With dead ends: 130 [2024-11-20 14:25:44,423 INFO L226 Difference]: Without dead ends: 130 [2024-11-20 14:25:44,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-20 14:25:44,423 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:25:44,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 127 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:25:44,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-20 14:25:44,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2024-11-20 14:25:44,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 112 states have (on average 1.2767857142857142) internal successors, (143), 124 states have internal predecessors, (143), 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) [2024-11-20 14:25:44,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2024-11-20 14:25:44,429 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 48 [2024-11-20 14:25:44,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:25:44,430 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2024-11-20 14:25:44,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-20 14:25:44,430 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2024-11-20 14:25:44,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-20 14:25:44,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:25:44,431 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:25:44,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 14:25:44,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:25:44,633 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:25:44,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:25:44,634 INFO L85 PathProgramCache]: Analyzing trace with hash -821816881, now seen corresponding path program 1 times [2024-11-20 14:25:44,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:25:44,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986128269] [2024-11-20 14:25:44,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:44,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:25:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:25:44,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:25:44,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986128269] [2024-11-20 14:25:44,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986128269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:25:44,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608885120] [2024-11-20 14:25:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:44,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:25:44,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:25:44,955 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) [2024-11-20 14:25:44,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 14:25:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:45,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 14:25:45,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:25:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:25:45,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:25:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:25:45,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608885120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:25:45,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:25:45,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-20 14:25:45,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697020984] [2024-11-20 14:25:45,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:25:45,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 14:25:45,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:25:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 14:25:45,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-20 14:25:45,407 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 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) [2024-11-20 14:25:45,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:25:45,889 INFO L93 Difference]: Finished difference Result 660 states and 899 transitions. [2024-11-20 14:25:45,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-20 14:25:45,890 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 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 52 [2024-11-20 14:25:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:25:45,893 INFO L225 Difference]: With dead ends: 660 [2024-11-20 14:25:45,894 INFO L226 Difference]: Without dead ends: 660 [2024-11-20 14:25:45,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-20 14:25:45,895 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 902 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 14:25:45,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 573 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 14:25:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2024-11-20 14:25:45,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 176. [2024-11-20 14:25:45,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 160 states have (on average 1.19375) internal successors, (191), 172 states have internal predecessors, (191), 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) [2024-11-20 14:25:45,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 195 transitions. [2024-11-20 14:25:45,927 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 195 transitions. Word has length 52 [2024-11-20 14:25:45,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:25:45,928 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 195 transitions. [2024-11-20 14:25:45,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 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) [2024-11-20 14:25:45,928 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 195 transitions. [2024-11-20 14:25:45,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-20 14:25:45,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:25:45,931 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:25:45,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 14:25:46,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:25:46,132 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:25:46,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:25:46,132 INFO L85 PathProgramCache]: Analyzing trace with hash -587166477, now seen corresponding path program 2 times [2024-11-20 14:25:46,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:25:46,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463791510] [2024-11-20 14:25:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:46,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:25:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:25:46,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:25:46,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463791510] [2024-11-20 14:25:46,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463791510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:25:46,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256969036] [2024-11-20 14:25:46,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:25:46,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:25:46,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:25:46,869 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) [2024-11-20 14:25:46,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 14:25:46,976 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 14:25:46,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:25:46,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-20 14:25:46,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:25:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:25:47,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:25:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:25:47,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256969036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:25:47,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:25:47,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-20 14:25:47,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013544273] [2024-11-20 14:25:47,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:25:47,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-20 14:25:47,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:25:48,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-20 14:25:48,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-20 14:25:48,002 INFO L87 Difference]: Start difference. First operand 176 states and 195 transitions. Second operand has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 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) [2024-11-20 14:25:49,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:25:49,308 INFO L93 Difference]: Finished difference Result 1284 states and 1763 transitions. [2024-11-20 14:25:49,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-20 14:25:49,309 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 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 100 [2024-11-20 14:25:49,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:25:49,317 INFO L225 Difference]: With dead ends: 1284 [2024-11-20 14:25:49,317 INFO L226 Difference]: Without dead ends: 1284 [2024-11-20 14:25:49,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-20 14:25:49,319 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 2076 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 14:25:49,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2168 Valid, 1010 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 14:25:49,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2024-11-20 14:25:49,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 272. [2024-11-20 14:25:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 256 states have (on average 1.12109375) internal successors, (287), 268 states have internal predecessors, (287), 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) [2024-11-20 14:25:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 291 transitions. [2024-11-20 14:25:49,348 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 291 transitions. Word has length 100 [2024-11-20 14:25:49,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:25:49,349 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 291 transitions. [2024-11-20 14:25:49,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 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) [2024-11-20 14:25:49,350 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 291 transitions. [2024-11-20 14:25:49,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-20 14:25:49,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:25:49,355 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:25:49,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 14:25:49,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:25:49,556 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:25:49,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:25:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1995408581, now seen corresponding path program 3 times [2024-11-20 14:25:49,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:25:49,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976670455] [2024-11-20 14:25:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:49,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:25:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 14:25:51,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:25:51,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976670455] [2024-11-20 14:25:51,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976670455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:25:51,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529844787] [2024-11-20 14:25:51,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 14:25:51,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:25:51,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:25:51,802 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:25:51,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 14:25:51,901 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 14:25:51,901 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:25:51,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 14:25:51,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:25:51,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-20 14:25:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2024-11-20 14:25:52,064 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:25:52,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529844787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:25:52,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 14:25:52,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [49] total 52 [2024-11-20 14:25:52,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853565526] [2024-11-20 14:25:52,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:25:52,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:25:52,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:25:52,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:25:52,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2024-11-20 14:25:52,068 INFO L87 Difference]: Start difference. First operand 272 states and 291 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2024-11-20 14:25:52,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:25:52,136 INFO L93 Difference]: Finished difference Result 273 states and 292 transitions. [2024-11-20 14:25:52,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:25:52,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) Word has length 196 [2024-11-20 14:25:52,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:25:52,138 INFO L225 Difference]: With dead ends: 273 [2024-11-20 14:25:52,139 INFO L226 Difference]: Without dead ends: 273 [2024-11-20 14:25:52,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2024-11-20 14:25:52,140 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 2 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:25:52,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 225 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:25:52,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-20 14:25:52,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 270. [2024-11-20 14:25:52,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 255 states have (on average 1.1176470588235294) internal successors, (285), 266 states have internal predecessors, (285), 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) [2024-11-20 14:25:52,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 289 transitions. [2024-11-20 14:25:52,146 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 289 transitions. Word has length 196 [2024-11-20 14:25:52,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:25:52,146 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 289 transitions. [2024-11-20 14:25:52,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2024-11-20 14:25:52,146 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 289 transitions. [2024-11-20 14:25:52,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-20 14:25:52,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:25:52,151 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:25:52,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 14:25:52,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:25:52,353 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:25:52,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:25:52,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2032282617, now seen corresponding path program 1 times [2024-11-20 14:25:52,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:25:52,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861162477] [2024-11-20 14:25:52,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:52,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:25:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2024-11-20 14:25:52,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:25:52,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861162477] [2024-11-20 14:25:52,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861162477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:25:52,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768110667] [2024-11-20 14:25:52,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:25:52,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:25:52,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:25:52,533 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:25:52,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 14:25:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:25:52,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-20 14:25:52,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:25:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 14:25:53,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:25:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 14:25:56,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768110667] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:25:56,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:25:56,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 49, 49] total 98 [2024-11-20 14:25:56,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915243400] [2024-11-20 14:25:56,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:25:56,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-20 14:25:56,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:25:56,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-20 14:25:56,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4565, Invalid=4941, Unknown=0, NotChecked=0, Total=9506 [2024-11-20 14:25:56,524 INFO L87 Difference]: Start difference. First operand 270 states and 289 transitions. Second operand has 98 states, 98 states have (on average 4.061224489795919) internal successors, (398), 98 states have internal predecessors, (398), 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) [2024-11-20 14:26:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:26:17,763 INFO L93 Difference]: Finished difference Result 4687 states and 6610 transitions. [2024-11-20 14:26:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2024-11-20 14:26:17,765 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.061224489795919) internal successors, (398), 98 states have internal predecessors, (398), 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 198 [2024-11-20 14:26:17,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:26:17,785 INFO L225 Difference]: With dead ends: 4687 [2024-11-20 14:26:17,786 INFO L226 Difference]: Without dead ends: 4687 [2024-11-20 14:26:17,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19742 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=27360, Invalid=54150, Unknown=0, NotChecked=0, Total=81510 [2024-11-20 14:26:17,828 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 12691 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 1983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12881 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1983 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-20 14:26:17,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12881 Valid, 1782 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1983 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-20 14:26:17,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2024-11-20 14:26:17,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 498. [2024-11-20 14:26:17,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 482 states have (on average 1.0912863070539418) internal successors, (526), 493 states have internal predecessors, (526), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:26:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 532 transitions. [2024-11-20 14:26:17,925 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 532 transitions. Word has length 198 [2024-11-20 14:26:17,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:26:17,926 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 532 transitions. [2024-11-20 14:26:17,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.061224489795919) internal successors, (398), 98 states have internal predecessors, (398), 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) [2024-11-20 14:26:17,926 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 532 transitions. [2024-11-20 14:26:17,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-20 14:26:17,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:26:17,931 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:26:17,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 14:26:18,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:26:18,132 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:26:18,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:26:18,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1572474150, now seen corresponding path program 2 times [2024-11-20 14:26:18,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:26:18,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194976948] [2024-11-20 14:26:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:26:18,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:26:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:26:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17579 trivial. 0 not checked. [2024-11-20 14:26:18,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:26:18,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194976948] [2024-11-20 14:26:18,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194976948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:26:18,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766476104] [2024-11-20 14:26:18,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:26:18,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:26:18,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:26:18,714 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:26:18,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 14:26:18,863 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 14:26:18,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:26:18,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 14:26:18,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:26:18,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-20 14:26:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17584 trivial. 0 not checked. [2024-11-20 14:26:18,945 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:26:18,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766476104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:26:18,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 14:26:18,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-20 14:26:18,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538372129] [2024-11-20 14:26:18,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:26:18,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:26:18,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:26:18,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:26:18,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:26:18,947 INFO L87 Difference]: Start difference. First operand 498 states and 532 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-20 14:26:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:26:19,010 INFO L93 Difference]: Finished difference Result 504 states and 530 transitions. [2024-11-20 14:26:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:26:19,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 394 [2024-11-20 14:26:19,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:26:19,013 INFO L225 Difference]: With dead ends: 504 [2024-11-20 14:26:19,013 INFO L226 Difference]: Without dead ends: 504 [2024-11-20 14:26:19,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:26:19,014 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 118 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:26:19,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 103 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:26:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-11-20 14:26:19,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 498. [2024-11-20 14:26:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 482 states have (on average 1.0871369294605808) internal successors, (524), 493 states have internal predecessors, (524), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:26:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 530 transitions. [2024-11-20 14:26:19,022 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 530 transitions. Word has length 394 [2024-11-20 14:26:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:26:19,023 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 530 transitions. [2024-11-20 14:26:19,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-20 14:26:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 530 transitions. [2024-11-20 14:26:19,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-20 14:26:19,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:26:19,027 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:26:19,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 14:26:19,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-20 14:26:19,229 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:26:19,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:26:19,229 INFO L85 PathProgramCache]: Analyzing trace with hash -369081090, now seen corresponding path program 1 times [2024-11-20 14:26:19,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:26:19,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572820327] [2024-11-20 14:26:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:26:19,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:26:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:26:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17584 trivial. 0 not checked. [2024-11-20 14:26:19,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:26:19,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572820327] [2024-11-20 14:26:19,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572820327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:26:19,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:26:19,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:26:19,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380775907] [2024-11-20 14:26:19,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:26:19,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:26:19,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:26:19,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:26:19,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:26:19,661 INFO L87 Difference]: Start difference. First operand 498 states and 530 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2024-11-20 14:26:19,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:26:19,690 INFO L93 Difference]: Finished difference Result 496 states and 519 transitions. [2024-11-20 14:26:19,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:26:19,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) Word has length 397 [2024-11-20 14:26:19,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:26:19,692 INFO L225 Difference]: With dead ends: 496 [2024-11-20 14:26:19,692 INFO L226 Difference]: Without dead ends: 496 [2024-11-20 14:26:19,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:26:19,693 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 14 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:26:19,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 194 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:26:19,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-11-20 14:26:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 492. [2024-11-20 14:26:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 476 states have (on average 1.0714285714285714) internal successors, (510), 487 states have internal predecessors, (510), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 14:26:19,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 516 transitions. [2024-11-20 14:26:19,701 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 516 transitions. Word has length 397 [2024-11-20 14:26:19,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:26:19,702 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 516 transitions. [2024-11-20 14:26:19,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2024-11-20 14:26:19,702 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 516 transitions. [2024-11-20 14:26:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-20 14:26:19,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:26:19,706 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:26:19,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 14:26:19,707 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:26:19,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:26:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1043534557, now seen corresponding path program 1 times [2024-11-20 14:26:19,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:26:19,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724856895] [2024-11-20 14:26:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:26:19,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:26:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:26:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17584 trivial. 0 not checked. [2024-11-20 14:26:19,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:26:19,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724856895] [2024-11-20 14:26:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724856895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:26:19,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:26:19,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:26:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666919926] [2024-11-20 14:26:19,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:26:19,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:26:19,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:26:19,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:26:19,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:26:19,977 INFO L87 Difference]: Start difference. First operand 492 states and 516 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-11-20 14:26:19,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:26:19,984 INFO L93 Difference]: Finished difference Result 419 states and 421 transitions. [2024-11-20 14:26:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:26:19,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 402 [2024-11-20 14:26:19,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:26:19,986 INFO L225 Difference]: With dead ends: 419 [2024-11-20 14:26:19,986 INFO L226 Difference]: Without dead ends: 419 [2024-11-20 14:26:19,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:26:19,987 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:26:19,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:26:19,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-11-20 14:26:19,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2024-11-20 14:26:19,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 417 states have (on average 1.0095923261390887) internal successors, (421), 418 states have internal predecessors, (421), 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) [2024-11-20 14:26:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 421 transitions. [2024-11-20 14:26:19,993 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 421 transitions. Word has length 402 [2024-11-20 14:26:19,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:26:19,994 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 421 transitions. [2024-11-20 14:26:19,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-11-20 14:26:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 421 transitions. [2024-11-20 14:26:19,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-20 14:26:19,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:26:19,999 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:26:19,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 14:26:19,999 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:26:19,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:26:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1753254143, now seen corresponding path program 1 times [2024-11-20 14:26:20,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:26:20,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539554922] [2024-11-20 14:26:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:26:20,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:26:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:26:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 17586 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 14:26:26,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:26:26,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539554922] [2024-11-20 14:26:26,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539554922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:26:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113535137] [2024-11-20 14:26:26,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:26:26,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:26:26,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:26:26,493 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:26:26,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 14:26:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:26:26,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-20 14:26:26,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:26:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 17586 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 14:26:27,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:26:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 17586 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 14:26:36,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113535137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:26:36,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:26:36,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-20 14:26:36,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835311198] [2024-11-20 14:26:36,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:26:36,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-20 14:26:36,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:26:36,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-20 14:26:36,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-20 14:26:36,274 INFO L87 Difference]: Start difference. First operand 419 states and 421 transitions. Second operand has 193 states, 193 states have (on average 4.051813471502591) internal successors, (782), 193 states have internal predecessors, (782), 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) [2024-11-20 14:26:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:26:37,361 INFO L93 Difference]: Finished difference Result 803 states and 805 transitions. [2024-11-20 14:26:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-20 14:26:37,362 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 4.051813471502591) internal successors, (782), 193 states have internal predecessors, (782), 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 404 [2024-11-20 14:26:37,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:26:37,365 INFO L225 Difference]: With dead ends: 803 [2024-11-20 14:26:37,365 INFO L226 Difference]: Without dead ends: 803 [2024-11-20 14:26:37,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-20 14:26:37,368 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 14:26:37,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 336 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 14:26:37,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-11-20 14:26:37,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2024-11-20 14:26:37,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.0049937578027466) internal successors, (805), 802 states have internal predecessors, (805), 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) [2024-11-20 14:26:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 805 transitions. [2024-11-20 14:26:37,379 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 805 transitions. Word has length 404 [2024-11-20 14:26:37,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:26:37,380 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 805 transitions. [2024-11-20 14:26:37,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 4.051813471502591) internal successors, (782), 193 states have internal predecessors, (782), 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) [2024-11-20 14:26:37,381 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 805 transitions. [2024-11-20 14:26:37,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2024-11-20 14:26:37,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:26:37,398 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:26:37,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 14:26:37,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 14:26:37,599 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-20 14:26:37,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:26:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2089824289, now seen corresponding path program 2 times [2024-11-20 14:26:37,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:26:37,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3582396] [2024-11-20 14:26:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:26:37,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:26:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:27:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 72018 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 14:27:01,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:27:01,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3582396] [2024-11-20 14:27:01,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3582396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:27:01,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782231640] [2024-11-20 14:27:01,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:27:01,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:27:01,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:27:01,695 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 14:27:01,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 14:27:02,244 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 14:27:02,244 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:27:02,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 2784 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-20 14:27:02,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:27:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 72018 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 14:27:02,948 INFO L311 TraceCheckSpWp]: Computing backward predicates...