./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/960521-1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d 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/memsafety/960521-1-1.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 4591ef5e575ce80e216cc4837705a7c6f141a943d9af6ca1eb606ab877abd06b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 10:38:33,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 10:38:33,165 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 10:38:33,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 10:38:33,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 10:38:33,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 10:38:33,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 10:38:33,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 10:38:33,200 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 10:38:33,200 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 10:38:33,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 10:38:33,201 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 10:38:33,202 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 10:38:33,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 10:38:33,203 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 10:38:33,204 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 10:38:33,204 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 10:38:33,205 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 10:38:33,205 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 10:38:33,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 10:38:33,205 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 10:38:33,209 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 10:38:33,209 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 10:38:33,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 10:38:33,210 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 10:38:33,210 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 10:38:33,210 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 10:38:33,211 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 10:38:33,211 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 10:38:33,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 10:38:33,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 10:38:33,212 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 10:38:33,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 10:38:33,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 10:38:33,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 10:38:33,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 10:38:33,214 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 10:38:33,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 10:38:33,214 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 10:38:33,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 10:38:33,215 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 10:38:33,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 10:38:33,216 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4591ef5e575ce80e216cc4837705a7c6f141a943d9af6ca1eb606ab877abd06b [2024-10-13 10:38:33,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 10:38:33,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 10:38:33,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 10:38:33,499 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 10:38:33,500 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 10:38:33,502 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/960521-1-1.i [2024-10-13 10:38:35,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 10:38:35,261 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 10:38:35,262 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/960521-1-1.i [2024-10-13 10:38:35,275 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72a96f708/08f5884a7ee14e53bf28d994885ccd70/FLAGb4e3044fa [2024-10-13 10:38:35,291 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72a96f708/08f5884a7ee14e53bf28d994885ccd70 [2024-10-13 10:38:35,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 10:38:35,295 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 10:38:35,296 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 10:38:35,296 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 10:38:35,300 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 10:38:35,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:38:35" (1/1) ... [2024-10-13 10:38:35,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2330cfe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35, skipping insertion in model container [2024-10-13 10:38:35,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:38:35" (1/1) ... [2024-10-13 10:38:35,338 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 10:38:35,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 10:38:35,662 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 10:38:35,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 10:38:35,747 INFO L204 MainTranslator]: Completed translation [2024-10-13 10:38:35,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35 WrapperNode [2024-10-13 10:38:35,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 10:38:35,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 10:38:35,749 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 10:38:35,750 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 10:38:35,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35" (1/1) ... [2024-10-13 10:38:35,776 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35" (1/1) ... [2024-10-13 10:38:35,801 INFO L138 Inliner]: procedures = 121, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-10-13 10:38:35,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 10:38:35,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 10:38:35,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 10:38:35,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 10:38:35,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35" (1/1) ... [2024-10-13 10:38:35,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35" (1/1) ... [2024-10-13 10:38:35,814 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35" (1/1) ... [2024-10-13 10:38:35,831 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 1, 3]. 50 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, 1, 2]. [2024-10-13 10:38:35,831 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35" (1/1) ... [2024-10-13 10:38:35,831 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35" (1/1) ... [2024-10-13 10:38:35,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35" (1/1) ... [2024-10-13 10:38:35,840 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35" (1/1) ... [2024-10-13 10:38:35,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35" (1/1) ... [2024-10-13 10:38:35,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35" (1/1) ... [2024-10-13 10:38:35,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 10:38:35,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 10:38:35,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 10:38:35,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 10:38:35,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35" (1/1) ... [2024-10-13 10:38:35,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 10:38:35,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:38:35,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 10:38:35,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 10:38:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 10:38:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 10:38:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 10:38:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 10:38:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 10:38:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 10:38:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 10:38:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 10:38:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 10:38:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 10:38:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 10:38:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 10:38:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 10:38:35,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 10:38:36,042 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 10:38:36,045 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 10:38:36,214 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-10-13 10:38:36,215 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 10:38:36,245 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 10:38:36,246 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 10:38:36,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:38:36 BoogieIcfgContainer [2024-10-13 10:38:36,246 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 10:38:36,249 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 10:38:36,249 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 10:38:36,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 10:38:36,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:38:35" (1/3) ... [2024-10-13 10:38:36,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50440b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:38:36, skipping insertion in model container [2024-10-13 10:38:36,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:38:35" (2/3) ... [2024-10-13 10:38:36,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50440b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:38:36, skipping insertion in model container [2024-10-13 10:38:36,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:38:36" (3/3) ... [2024-10-13 10:38:36,281 INFO L112 eAbstractionObserver]: Analyzing ICFG 960521-1-1.i [2024-10-13 10:38:36,298 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 10:38:36,298 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-10-13 10:38:36,365 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 10:38:36,374 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;@5e2dd612, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 10:38:36,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-13 10:38:36,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 45 states have internal predecessors, (50), 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) [2024-10-13 10:38:36,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-10-13 10:38:36,388 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:38:36,388 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-10-13 10:38:36,389 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:38:36,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:38:36,395 INFO L85 PathProgramCache]: Analyzing trace with hash 3445, now seen corresponding path program 1 times [2024-10-13 10:38:36,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:38:36,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295969960] [2024-10-13 10:38:36,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:36,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:38:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:36,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:38:36,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295969960] [2024-10-13 10:38:36,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295969960] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:38:36,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:38:36,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 10:38:36,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286392194] [2024-10-13 10:38:36,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:38:36,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:38:36,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:38:36,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:38:36,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:38:36,700 INFO L87 Difference]: Start difference. First operand has 46 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2024-10-13 10:38:36,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:38:36,759 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-10-13 10:38:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:38:36,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2024-10-13 10:38:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:38:36,768 INFO L225 Difference]: With dead ends: 45 [2024-10-13 10:38:36,768 INFO L226 Difference]: Without dead ends: 44 [2024-10-13 10:38:36,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:38:36,772 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 10:38:36,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 10:38:36,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-13 10:38:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-13 10:38:36,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 43 states have internal predecessors, (46), 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) [2024-10-13 10:38:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2024-10-13 10:38:36,798 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 2 [2024-10-13 10:38:36,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:38:36,798 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2024-10-13 10:38:36,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2024-10-13 10:38:36,799 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2024-10-13 10:38:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-10-13 10:38:36,799 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:38:36,799 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-10-13 10:38:36,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 10:38:36,800 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:38:36,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:38:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash 3446, now seen corresponding path program 1 times [2024-10-13 10:38:36,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:38:36,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857433801] [2024-10-13 10:38:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:36,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:38:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:36,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:38:36,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857433801] [2024-10-13 10:38:36,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857433801] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:38:36,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:38:36,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 10:38:36,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65858485] [2024-10-13 10:38:36,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:38:36,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:38:36,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:38:36,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:38:36,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:38:36,980 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2024-10-13 10:38:37,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:38:37,008 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2024-10-13 10:38:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:38:37,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2024-10-13 10:38:37,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:38:37,011 INFO L225 Difference]: With dead ends: 43 [2024-10-13 10:38:37,011 INFO L226 Difference]: Without dead ends: 43 [2024-10-13 10:38:37,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:38:37,014 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 10:38:37,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 10:38:37,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-13 10:38:37,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-10-13 10:38:37,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.875) internal successors, (45), 42 states have internal predecessors, (45), 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) [2024-10-13 10:38:37,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2024-10-13 10:38:37,021 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 2 [2024-10-13 10:38:37,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:38:37,021 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2024-10-13 10:38:37,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2024-10-13 10:38:37,022 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2024-10-13 10:38:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-13 10:38:37,022 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:38:37,022 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-13 10:38:37,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 10:38:37,023 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:38:37,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:38:37,024 INFO L85 PathProgramCache]: Analyzing trace with hash 3387014, now seen corresponding path program 1 times [2024-10-13 10:38:37,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:38:37,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523634836] [2024-10-13 10:38:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:37,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:38:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:37,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:38:37,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523634836] [2024-10-13 10:38:37,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523634836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:38:37,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:38:37,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:38:37,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936057244] [2024-10-13 10:38:37,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:38:37,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 10:38:37,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:38:37,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 10:38:37,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:38:37,140 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) 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) [2024-10-13 10:38:37,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:38:37,194 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-10-13 10:38:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:38:37,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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 [2024-10-13 10:38:37,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:38:37,196 INFO L225 Difference]: With dead ends: 40 [2024-10-13 10:38:37,196 INFO L226 Difference]: Without dead ends: 40 [2024-10-13 10:38:37,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:38:37,198 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 23 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 10:38:37,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 46 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 10:38:37,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-10-13 10:38:37,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-10-13 10:38:37,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.75) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:38:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2024-10-13 10:38:37,203 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 4 [2024-10-13 10:38:37,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:38:37,203 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2024-10-13 10:38:37,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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) [2024-10-13 10:38:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2024-10-13 10:38:37,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-13 10:38:37,204 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:38:37,204 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-13 10:38:37,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 10:38:37,205 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:38:37,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:38:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash 3387015, now seen corresponding path program 1 times [2024-10-13 10:38:37,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:38:37,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829108521] [2024-10-13 10:38:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:37,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:38:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:37,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:38:37,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829108521] [2024-10-13 10:38:37,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829108521] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:38:37,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:38:37,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 10:38:37,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225844229] [2024-10-13 10:38:37,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:38:37,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 10:38:37,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:38:37,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 10:38:37,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 10:38:37,419 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2024-10-13 10:38:37,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:38:37,507 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2024-10-13 10:38:37,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 10:38:37,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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 [2024-10-13 10:38:37,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:38:37,511 INFO L225 Difference]: With dead ends: 42 [2024-10-13 10:38:37,511 INFO L226 Difference]: Without dead ends: 42 [2024-10-13 10:38:37,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 10:38:37,513 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 10:38:37,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 94 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 10:38:37,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-13 10:38:37,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-10-13 10:38:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 41 states have internal predecessors, (45), 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) [2024-10-13 10:38:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2024-10-13 10:38:37,524 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 4 [2024-10-13 10:38:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:38:37,524 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2024-10-13 10:38:37,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2024-10-13 10:38:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2024-10-13 10:38:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-13 10:38:37,525 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:38:37,526 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 10:38:37,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 10:38:37,526 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:38:37,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:38:37,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1040098703, now seen corresponding path program 1 times [2024-10-13 10:38:37,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:38:37,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114003922] [2024-10-13 10:38:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:37,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:38:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:37,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:38:37,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114003922] [2024-10-13 10:38:37,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114003922] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:38:37,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:38:37,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 10:38:37,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833366867] [2024-10-13 10:38:37,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:38:37,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 10:38:37,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:38:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 10:38:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:38:37,594 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-10-13 10:38:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:38:37,627 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2024-10-13 10:38:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 10:38:37,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2024-10-13 10:38:37,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:38:37,628 INFO L225 Difference]: With dead ends: 45 [2024-10-13 10:38:37,628 INFO L226 Difference]: Without dead ends: 45 [2024-10-13 10:38:37,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:38:37,631 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 45 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 10:38:37,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 64 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 10:38:37,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-13 10:38:37,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-10-13 10:38:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 42 states have internal predecessors, (45), 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) [2024-10-13 10:38:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2024-10-13 10:38:37,638 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 6 [2024-10-13 10:38:37,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:38:37,639 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2024-10-13 10:38:37,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-10-13 10:38:37,639 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2024-10-13 10:38:37,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-13 10:38:37,639 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:38:37,639 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 10:38:37,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 10:38:37,640 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:38:37,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:38:37,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1039982965, now seen corresponding path program 1 times [2024-10-13 10:38:37,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:38:37,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787553888] [2024-10-13 10:38:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:37,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:38:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:37,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:38:37,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787553888] [2024-10-13 10:38:37,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787553888] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:38:37,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716992964] [2024-10-13 10:38:37,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:37,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:38:37,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:38:37,937 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) [2024-10-13 10:38:37,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 10:38:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:38,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 10:38:38,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:38:38,145 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-13 10:38:38,146 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 1 case distinctions, treesize of input 9 treesize of output 11 [2024-10-13 10:38:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:38,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:38:38,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:38,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716992964] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:38:38,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:38:38,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-10-13 10:38:38,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156997419] [2024-10-13 10:38:38,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:38:38,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 10:38:38,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:38:38,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 10:38:38,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-10-13 10:38:38,403 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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) [2024-10-13 10:38:38,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:38:38,653 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-10-13 10:38:38,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 10:38:38,655 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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 6 [2024-10-13 10:38:38,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:38:38,656 INFO L225 Difference]: With dead ends: 49 [2024-10-13 10:38:38,656 INFO L226 Difference]: Without dead ends: 49 [2024-10-13 10:38:38,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-10-13 10:38:38,657 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 48 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 10:38:38,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 102 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 10:38:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-13 10:38:38,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-13 10:38:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.606060606060606) internal successors, (53), 48 states have internal predecessors, (53), 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) [2024-10-13 10:38:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2024-10-13 10:38:38,662 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 6 [2024-10-13 10:38:38,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:38:38,662 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2024-10-13 10:38:38,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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) [2024-10-13 10:38:38,662 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2024-10-13 10:38:38,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-13 10:38:38,663 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:38:38,663 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 10:38:38,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 10:38:38,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 10:38:38,871 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:38:38,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:38:38,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1165711495, now seen corresponding path program 1 times [2024-10-13 10:38:38,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:38:38,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247996513] [2024-10-13 10:38:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:38,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:38:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 10:38:38,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:38:38,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247996513] [2024-10-13 10:38:38,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247996513] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:38:38,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:38:38,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:38:38,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343035049] [2024-10-13 10:38:38,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:38:38,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 10:38:38,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:38:38,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 10:38:38,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:38:38,914 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-10-13 10:38:38,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:38:38,953 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2024-10-13 10:38:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 10:38:38,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 10 [2024-10-13 10:38:38,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:38:38,954 INFO L225 Difference]: With dead ends: 47 [2024-10-13 10:38:38,954 INFO L226 Difference]: Without dead ends: 47 [2024-10-13 10:38:38,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 10:38:38,955 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 17 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 10:38:38,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 58 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 10:38:38,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-13 10:38:38,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-13 10:38:38,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 46 states have internal predecessors, (51), 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) [2024-10-13 10:38:38,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2024-10-13 10:38:38,959 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 10 [2024-10-13 10:38:38,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:38:38,959 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2024-10-13 10:38:38,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-10-13 10:38:38,959 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-10-13 10:38:38,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-13 10:38:38,960 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:38:38,960 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 10:38:38,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 10:38:38,960 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:38:38,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:38:38,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1165711494, now seen corresponding path program 1 times [2024-10-13 10:38:38,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:38:38,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375965240] [2024-10-13 10:38:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:38,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:38:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:39,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:38:39,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375965240] [2024-10-13 10:38:39,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375965240] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:38:39,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186870781] [2024-10-13 10:38:39,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:39,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:38:39,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:38:39,036 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) [2024-10-13 10:38:39,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 10:38:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:39,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 10:38:39,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:38:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:39,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:38:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:39,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186870781] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:38:39,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:38:39,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-13 10:38:39,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719547403] [2024-10-13 10:38:39,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:38:39,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 10:38:39,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:38:39,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 10:38:39,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=89, Unknown=0, NotChecked=0, Total=156 [2024-10-13 10:38:39,219 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:38:39,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:38:39,344 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2024-10-13 10:38:39,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 10:38:39,345 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-13 10:38:39,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:38:39,347 INFO L225 Difference]: With dead ends: 58 [2024-10-13 10:38:39,347 INFO L226 Difference]: Without dead ends: 58 [2024-10-13 10:38:39,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=140, Unknown=0, NotChecked=0, Total=240 [2024-10-13 10:38:39,348 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 129 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 10:38:39,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 114 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 10:38:39,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-13 10:38:39,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-10-13 10:38:39,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.475) internal successors, (59), 53 states have internal predecessors, (59), 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) [2024-10-13 10:38:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2024-10-13 10:38:39,353 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 10 [2024-10-13 10:38:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:38:39,354 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2024-10-13 10:38:39,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:38:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2024-10-13 10:38:39,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-13 10:38:39,354 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:38:39,354 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2024-10-13 10:38:39,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 10:38:39,560 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,SelfDestructingSolverStorable7 [2024-10-13 10:38:39,561 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:38:39,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:38:39,561 INFO L85 PathProgramCache]: Analyzing trace with hash 849004695, now seen corresponding path program 2 times [2024-10-13 10:38:39,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:38:39,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637554888] [2024-10-13 10:38:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:39,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:38:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:39,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:38:39,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637554888] [2024-10-13 10:38:39,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637554888] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:38:39,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799901318] [2024-10-13 10:38:39,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 10:38:39,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:38:39,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:38:39,899 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) [2024-10-13 10:38:39,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 10:38:39,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 10:38:39,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 10:38:39,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 10:38:39,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:38:39,990 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-13 10:38:39,990 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 1 case distinctions, treesize of input 9 treesize of output 11 [2024-10-13 10:38:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:40,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:38:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:40,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799901318] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:38:40,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:38:40,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-10-13 10:38:40,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440979434] [2024-10-13 10:38:40,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:38:40,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 10:38:40,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:38:40,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 10:38:40,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-10-13 10:38:40,753 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 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) [2024-10-13 10:38:41,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:38:41,112 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2024-10-13 10:38:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 10:38:41,112 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-13 10:38:41,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:38:41,113 INFO L225 Difference]: With dead ends: 53 [2024-10-13 10:38:41,113 INFO L226 Difference]: Without dead ends: 53 [2024-10-13 10:38:41,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2024-10-13 10:38:41,115 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 39 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 10:38:41,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 172 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 10:38:41,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-13 10:38:41,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-10-13 10:38:41,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.425) internal successors, (57), 52 states have internal predecessors, (57), 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) [2024-10-13 10:38:41,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2024-10-13 10:38:41,122 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 12 [2024-10-13 10:38:41,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:38:41,122 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2024-10-13 10:38:41,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 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) [2024-10-13 10:38:41,123 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2024-10-13 10:38:41,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-13 10:38:41,123 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:38:41,123 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1] [2024-10-13 10:38:41,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 10:38:41,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:38:41,324 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:38:41,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:38:41,324 INFO L85 PathProgramCache]: Analyzing trace with hash -200018550, now seen corresponding path program 2 times [2024-10-13 10:38:41,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:38:41,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502492545] [2024-10-13 10:38:41,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:41,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:38:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:38:41,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:38:41,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502492545] [2024-10-13 10:38:41,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502492545] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:38:41,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918312562] [2024-10-13 10:38:41,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 10:38:41,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:38:41,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:38:41,467 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) [2024-10-13 10:38:41,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 10:38:41,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 10:38:41,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 10:38:41,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 10:38:41,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:38:41,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-10-13 10:38:41,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 10:38:41,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-10-13 10:38:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 10:38:41,641 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 10:38:41,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918312562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:38:41,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 10:38:41,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 12 [2024-10-13 10:38:41,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489208485] [2024-10-13 10:38:41,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:38:41,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 10:38:41,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:38:41,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 10:38:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-13 10:38:41,644 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-10-13 10:38:41,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:38:41,674 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2024-10-13 10:38:41,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 10:38:41,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 18 [2024-10-13 10:38:41,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:38:41,676 INFO L225 Difference]: With dead ends: 41 [2024-10-13 10:38:41,676 INFO L226 Difference]: Without dead ends: 41 [2024-10-13 10:38:41,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-13 10:38:41,677 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 10:38:41,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 44 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 10:38:41,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-13 10:38:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-10-13 10:38:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 40 states have internal predecessors, (43), 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) [2024-10-13 10:38:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2024-10-13 10:38:41,680 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 18 [2024-10-13 10:38:41,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:38:41,680 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2024-10-13 10:38:41,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-10-13 10:38:41,680 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2024-10-13 10:38:41,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-13 10:38:41,681 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:38:41,681 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 10:38:41,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 10:38:41,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:38:41,886 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:38:41,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:38:41,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1055746010, now seen corresponding path program 1 times [2024-10-13 10:38:41,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:38:41,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907671571] [2024-10-13 10:38:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:41,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:38:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 10:38:42,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:38:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907671571] [2024-10-13 10:38:42,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907671571] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:38:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062547331] [2024-10-13 10:38:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:42,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:38:42,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:38:42,018 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) [2024-10-13 10:38:42,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 10:38:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:42,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 10:38:42,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:38:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 10:38:42,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:38:42,349 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 10:38:42,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062547331] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:38:42,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:38:42,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-13 10:38:42,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276717639] [2024-10-13 10:38:42,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:38:42,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 10:38:42,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:38:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 10:38:42,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=341, Unknown=0, NotChecked=0, Total=600 [2024-10-13 10:38:42,352 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 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) [2024-10-13 10:38:42,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:38:42,596 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2024-10-13 10:38:42,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 10:38:42,597 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 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 20 [2024-10-13 10:38:42,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:38:42,598 INFO L225 Difference]: With dead ends: 77 [2024-10-13 10:38:42,598 INFO L226 Difference]: Without dead ends: 77 [2024-10-13 10:38:42,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=392, Invalid=600, Unknown=0, NotChecked=0, Total=992 [2024-10-13 10:38:42,599 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 112 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 10:38:42,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 92 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 10:38:42,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-13 10:38:42,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2024-10-13 10:38:42,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 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) [2024-10-13 10:38:42,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2024-10-13 10:38:42,603 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 20 [2024-10-13 10:38:42,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:38:42,604 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2024-10-13 10:38:42,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 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) [2024-10-13 10:38:42,604 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2024-10-13 10:38:42,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-13 10:38:42,605 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:38:42,605 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 10:38:42,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 10:38:42,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-13 10:38:42,810 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:38:42,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:38:42,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1723616250, now seen corresponding path program 2 times [2024-10-13 10:38:42,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:38:42,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302655899] [2024-10-13 10:38:42,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:42,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:38:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:43,168 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 10:38:43,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:38:43,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302655899] [2024-10-13 10:38:43,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302655899] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:38:43,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047999613] [2024-10-13 10:38:43,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 10:38:43,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:38:43,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:38:43,173 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) [2024-10-13 10:38:43,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 10:38:43,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 10:38:43,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 10:38:43,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 10:38:43,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:38:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 10:38:43,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:38:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 10:38:44,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047999613] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:38:44,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:38:44,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 48 [2024-10-13 10:38:44,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093601358] [2024-10-13 10:38:44,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:38:44,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-13 10:38:44,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:38:44,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-13 10:38:44,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=1325, Unknown=0, NotChecked=0, Total=2352 [2024-10-13 10:38:44,018 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 49 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 48 states have internal predecessors, (96), 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) [2024-10-13 10:38:44,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:38:44,653 INFO L93 Difference]: Finished difference Result 141 states and 183 transitions. [2024-10-13 10:38:44,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-13 10:38:44,654 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 48 states have internal predecessors, (96), 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 36 [2024-10-13 10:38:44,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:38:44,655 INFO L225 Difference]: With dead ends: 141 [2024-10-13 10:38:44,655 INFO L226 Difference]: Without dead ends: 141 [2024-10-13 10:38:44,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1552, Invalid=2480, Unknown=0, NotChecked=0, Total=4032 [2024-10-13 10:38:44,657 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 379 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 10:38:44,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 62 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 10:38:44,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-10-13 10:38:44,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2024-10-13 10:38:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 106 states have (on average 1.1981132075471699) internal successors, (127), 112 states have internal predecessors, (127), 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) [2024-10-13 10:38:44,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2024-10-13 10:38:44,664 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 36 [2024-10-13 10:38:44,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:38:44,664 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2024-10-13 10:38:44,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 48 states have internal predecessors, (96), 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) [2024-10-13 10:38:44,665 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2024-10-13 10:38:44,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-13 10:38:44,672 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:38:44,672 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 10:38:44,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 10:38:44,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:38:44,873 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:38:44,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:38:44,874 INFO L85 PathProgramCache]: Analyzing trace with hash -541764550, now seen corresponding path program 3 times [2024-10-13 10:38:44,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:38:44,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905970888] [2024-10-13 10:38:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:44,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:38:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 10:38:45,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:38:45,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905970888] [2024-10-13 10:38:45,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905970888] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:38:45,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469254734] [2024-10-13 10:38:45,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 10:38:45,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:38:45,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:38:45,923 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) [2024-10-13 10:38:45,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 10:38:46,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 10:38:46,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 10:38:46,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-13 10:38:46,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:38:46,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-10-13 10:38:46,049 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 [2024-10-13 10:38:46,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-10-13 10:38:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2024-10-13 10:38:47,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:38:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2024-10-13 10:38:47,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469254734] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:38:47,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:38:47,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 5, 5] total 43 [2024-10-13 10:38:47,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178337156] [2024-10-13 10:38:47,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:38:47,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-13 10:38:47,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:38:47,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-13 10:38:47,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=1289, Unknown=0, NotChecked=0, Total=1892 [2024-10-13 10:38:47,901 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand has 44 states, 44 states have (on average 2.022727272727273) internal successors, (89), 43 states have internal predecessors, (89), 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) [2024-10-13 10:38:53,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 10:38:58,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:38:58,340 INFO L93 Difference]: Finished difference Result 149 states and 193 transitions. [2024-10-13 10:38:58,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-10-13 10:38:58,341 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.022727272727273) internal successors, (89), 43 states have internal predecessors, (89), 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 68 [2024-10-13 10:38:58,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:38:58,342 INFO L225 Difference]: With dead ends: 149 [2024-10-13 10:38:58,342 INFO L226 Difference]: Without dead ends: 149 [2024-10-13 10:38:58,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=3570, Invalid=7772, Unknown=0, NotChecked=0, Total=11342 [2024-10-13 10:38:58,345 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 594 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-13 10:38:58,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 18 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-13 10:38:58,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-10-13 10:38:58,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 115. [2024-10-13 10:38:58,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 108 states have (on average 1.1666666666666667) internal successors, (126), 114 states have internal predecessors, (126), 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) [2024-10-13 10:38:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2024-10-13 10:38:58,354 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 68 [2024-10-13 10:38:58,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:38:58,354 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2024-10-13 10:38:58,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.022727272727273) internal successors, (89), 43 states have internal predecessors, (89), 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) [2024-10-13 10:38:58,357 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2024-10-13 10:38:58,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-13 10:38:58,359 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:38:58,359 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 5, 4, 1, 1, 1, 1, 1] [2024-10-13 10:38:58,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 10:38:58,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:38:58,560 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:38:58,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:38:58,560 INFO L85 PathProgramCache]: Analyzing trace with hash 788604974, now seen corresponding path program 4 times [2024-10-13 10:38:58,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:38:58,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783163323] [2024-10-13 10:38:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:38:58,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:38:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:38:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 10:38:59,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:38:59,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783163323] [2024-10-13 10:38:59,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783163323] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:38:59,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447166212] [2024-10-13 10:38:59,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 10:38:59,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:38:59,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:38:59,624 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) [2024-10-13 10:38:59,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 10:39:00,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 10:39:00,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 10:39:00,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-13 10:39:00,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:39:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 10:39:01,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:39:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 10:39:02,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447166212] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:39:02,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:39:02,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 99 [2024-10-13 10:39:02,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324177132] [2024-10-13 10:39:02,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:39:02,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-10-13 10:39:02,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:39:02,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-10-13 10:39:02,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4359, Invalid=5541, Unknown=0, NotChecked=0, Total=9900 [2024-10-13 10:39:02,510 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 100 states, 100 states have (on average 1.98) internal successors, (198), 99 states have internal predecessors, (198), 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) [2024-10-13 10:39:04,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:39:04,204 INFO L93 Difference]: Finished difference Result 277 states and 367 transitions. [2024-10-13 10:39:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-10-13 10:39:04,205 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.98) internal successors, (198), 99 states have internal predecessors, (198), 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 76 [2024-10-13 10:39:04,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:39:04,206 INFO L225 Difference]: With dead ends: 277 [2024-10-13 10:39:04,206 INFO L226 Difference]: Without dead ends: 277 [2024-10-13 10:39:04,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6205 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=6567, Invalid=10725, Unknown=0, NotChecked=0, Total=17292 [2024-10-13 10:39:04,211 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 745 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 10:39:04,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 92 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 10:39:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-10-13 10:39:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 215. [2024-10-13 10:39:04,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 208 states have (on average 1.1682692307692308) internal successors, (243), 214 states have internal predecessors, (243), 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) [2024-10-13 10:39:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 243 transitions. [2024-10-13 10:39:04,234 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 243 transitions. Word has length 76 [2024-10-13 10:39:04,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:39:04,234 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 243 transitions. [2024-10-13 10:39:04,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.98) internal successors, (198), 99 states have internal predecessors, (198), 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) [2024-10-13 10:39:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 243 transitions. [2024-10-13 10:39:04,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-10-13 10:39:04,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:39:04,236 INFO L215 NwaCegarLoop]: trace histogram [64, 64, 5, 4, 1, 1, 1, 1, 1] [2024-10-13 10:39:04,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 10:39:04,439 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,SelfDestructingSolverStorable13 [2024-10-13 10:39:04,440 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-13 10:39:04,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:39:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash 53781682, now seen corresponding path program 5 times [2024-10-13 10:39:04,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:39:04,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958914929] [2024-10-13 10:39:04,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:39:04,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:39:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:39:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4116 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 10:39:07,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:39:07,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958914929] [2024-10-13 10:39:07,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958914929] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:39:07,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299786396] [2024-10-13 10:39:07,837 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 10:39:07,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:39:07,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:39:07,841 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) [2024-10-13 10:39:07,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process