./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/test-0236.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0236.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 9284cc089e563ce2bdd0201592786c36b8d718b3efb8766c887a82d2ff3babc3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:58:24,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:58:24,222 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 17:58:24,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:58:24,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:58:24,264 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:58:24,265 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:58:24,265 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:58:24,266 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 17:58:24,267 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 17:58:24,267 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:58:24,267 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:58:24,268 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:58:24,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:58:24,269 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:58:24,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:58:24,270 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:58:24,270 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:58:24,270 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:58:24,271 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:58:24,271 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 17:58:24,271 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 17:58:24,272 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 17:58:24,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:58:24,272 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 17:58:24,272 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:58:24,273 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:58:24,273 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:58:24,273 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:58:24,273 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:58:24,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:58:24,274 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 17:58:24,274 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:58:24,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:58:24,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:58:24,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:58:24,279 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:58:24,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:58:24,280 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:58:24,280 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:58:24,280 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:58:24,281 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:58:24,281 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9284cc089e563ce2bdd0201592786c36b8d718b3efb8766c887a82d2ff3babc3 [2024-10-11 17:58:24,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:58:24,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:58:24,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:58:24,592 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:58:24,592 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:58:24,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0236.i [2024-10-11 17:58:26,142 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:58:26,430 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:58:26,431 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0236.i [2024-10-11 17:58:26,448 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d783385c2/0780285353a64ec89bc6fd936aeea007/FLAG55aea0c10 [2024-10-11 17:58:26,713 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d783385c2/0780285353a64ec89bc6fd936aeea007 [2024-10-11 17:58:26,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:58:26,718 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:58:26,719 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:58:26,719 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:58:26,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:58:26,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:58:26" (1/1) ... [2024-10-11 17:58:26,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6278a73f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:26, skipping insertion in model container [2024-10-11 17:58:26,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:58:26" (1/1) ... [2024-10-11 17:58:26,768 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:58:27,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:58:27,098 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:58:27,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:58:27,173 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:58:27,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:27 WrapperNode [2024-10-11 17:58:27,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:58:27,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:58:27,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:58:27,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:58:27,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:27" (1/1) ... [2024-10-11 17:58:27,198 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:27" (1/1) ... [2024-10-11 17:58:27,228 INFO L138 Inliner]: procedures = 188, calls = 67, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 221 [2024-10-11 17:58:27,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:58:27,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:58:27,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:58:27,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:58:27,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:27" (1/1) ... [2024-10-11 17:58:27,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:27" (1/1) ... [2024-10-11 17:58:27,242 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:27" (1/1) ... [2024-10-11 17:58:27,271 INFO L175 MemorySlicer]: Split 39 memory accesses to 2 slices as follows [2, 37]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 19 writes are split as follows [0, 19]. [2024-10-11 17:58:27,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:27" (1/1) ... [2024-10-11 17:58:27,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:27" (1/1) ... [2024-10-11 17:58:27,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:27" (1/1) ... [2024-10-11 17:58:27,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:27" (1/1) ... [2024-10-11 17:58:27,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:27" (1/1) ... [2024-10-11 17:58:27,297 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:27" (1/1) ... [2024-10-11 17:58:27,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:58:27,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:58:27,302 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:58:27,302 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:58:27,303 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:27" (1/1) ... [2024-10-11 17:58:27,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:58:27,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:27,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 17:58:27,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 17:58:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 17:58:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 17:58:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 17:58:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 17:58:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 17:58:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 17:58:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2024-10-11 17:58:27,399 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2024-10-11 17:58:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 17:58:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-11 17:58:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-11 17:58:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 17:58:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 17:58:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:58:27,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:58:27,561 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:58:27,564 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:58:28,174 INFO L? ?]: Removed 220 outVars from TransFormulas that were not future-live. [2024-10-11 17:58:28,174 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:58:28,233 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:58:28,237 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-11 17:58:28,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:58:28 BoogieIcfgContainer [2024-10-11 17:58:28,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:58:28,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:58:28,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:58:28,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:58:28,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:58:26" (1/3) ... [2024-10-11 17:58:28,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225c91a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:58:28, skipping insertion in model container [2024-10-11 17:58:28,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:27" (2/3) ... [2024-10-11 17:58:28,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225c91a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:58:28, skipping insertion in model container [2024-10-11 17:58:28,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:58:28" (3/3) ... [2024-10-11 17:58:28,248 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0236.i [2024-10-11 17:58:28,264 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:58:28,265 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 89 error locations. [2024-10-11 17:58:28,309 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:58:28,315 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;@5cde2c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:58:28,315 INFO L334 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2024-10-11 17:58:28,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 174 states have internal predecessors, (196), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 17:58:28,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-11 17:58:28,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:28,328 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-11 17:58:28,329 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:28,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:28,333 INFO L85 PathProgramCache]: Analyzing trace with hash 397147, now seen corresponding path program 1 times [2024-10-11 17:58:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:28,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967213644] [2024-10-11 17:58:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:28,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:58:28,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:28,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967213644] [2024-10-11 17:58:28,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967213644] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:58:28,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:58:28,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:58:28,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300544739] [2024-10-11 17:58:28,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:58:28,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 17:58:28,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:28,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 17:58:28,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 17:58:28,552 INFO L87 Difference]: Start difference. First operand has 182 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 174 states have internal predecessors, (196), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-10-11 17:58:28,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:28,662 INFO L93 Difference]: Finished difference Result 182 states and 197 transitions. [2024-10-11 17:58:28,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 17:58:28,664 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2024-10-11 17:58:28,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:28,671 INFO L225 Difference]: With dead ends: 182 [2024-10-11 17:58:28,672 INFO L226 Difference]: Without dead ends: 181 [2024-10-11 17:58:28,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 17:58:28,676 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:28,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:58:28,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-10-11 17:58:28,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-10-11 17:58:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 85 states have (on average 2.164705882352941) internal successors, (184), 173 states have internal predecessors, (184), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 17:58:28,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 196 transitions. [2024-10-11 17:58:28,734 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 196 transitions. Word has length 3 [2024-10-11 17:58:28,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:28,735 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 196 transitions. [2024-10-11 17:58:28,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-10-11 17:58:28,735 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 196 transitions. [2024-10-11 17:58:28,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 17:58:28,736 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:28,736 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 17:58:28,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:58:28,737 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:28,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:28,738 INFO L85 PathProgramCache]: Analyzing trace with hash 376972432, now seen corresponding path program 1 times [2024-10-11 17:58:28,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:28,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004194342] [2024-10-11 17:58:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:28,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:58:28,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004194342] [2024-10-11 17:58:28,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004194342] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:58:28,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:58:28,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:58:28,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58135475] [2024-10-11 17:58:28,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:58:28,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:58:28,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:58:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:58:28,911 INFO L87 Difference]: Start difference. First operand 181 states and 196 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:58:29,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:29,091 INFO L93 Difference]: Finished difference Result 180 states and 195 transitions. [2024-10-11 17:58:29,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:58:29,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-11 17:58:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:29,093 INFO L225 Difference]: With dead ends: 180 [2024-10-11 17:58:29,093 INFO L226 Difference]: Without dead ends: 180 [2024-10-11 17:58:29,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:58:29,094 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 3 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:29,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 274 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:58:29,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-10-11 17:58:29,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-10-11 17:58:29,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 85 states have (on average 2.152941176470588) internal successors, (183), 172 states have internal predecessors, (183), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 17:58:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 195 transitions. [2024-10-11 17:58:29,113 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 195 transitions. Word has length 5 [2024-10-11 17:58:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:29,113 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 195 transitions. [2024-10-11 17:58:29,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:58:29,114 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 195 transitions. [2024-10-11 17:58:29,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 17:58:29,114 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:29,114 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 17:58:29,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 17:58:29,115 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:29,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:29,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1198756462, now seen corresponding path program 1 times [2024-10-11 17:58:29,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:29,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694278504] [2024-10-11 17:58:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:29,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:58:29,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524781082] [2024-10-11 17:58:29,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:29,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:29,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:29,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:29,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 17:58:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:29,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 17:58:29,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:29,357 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 6 treesize of output 5 [2024-10-11 17:58:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:58:29,384 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:58:29,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:29,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694278504] [2024-10-11 17:58:29,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:58:29,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524781082] [2024-10-11 17:58:29,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524781082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:58:29,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:58:29,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:58:29,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551962319] [2024-10-11 17:58:29,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:58:29,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 17:58:29,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:29,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 17:58:29,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 17:58:29,388 INFO L87 Difference]: Start difference. First operand 180 states and 195 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:58:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:29,605 INFO L93 Difference]: Finished difference Result 187 states and 202 transitions. [2024-10-11 17:58:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 17:58:29,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-11 17:58:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:29,607 INFO L225 Difference]: With dead ends: 187 [2024-10-11 17:58:29,607 INFO L226 Difference]: Without dead ends: 187 [2024-10-11 17:58:29,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:58:29,609 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 9 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:29,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 436 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:58:29,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-10-11 17:58:29,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2024-10-11 17:58:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 91 states have (on average 2.087912087912088) internal successors, (190), 178 states have internal predecessors, (190), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 17:58:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 202 transitions. [2024-10-11 17:58:29,620 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 202 transitions. Word has length 6 [2024-10-11 17:58:29,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:29,620 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 202 transitions. [2024-10-11 17:58:29,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:58:29,620 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 202 transitions. [2024-10-11 17:58:29,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 17:58:29,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:29,622 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:58:29,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 17:58:29,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:29,827 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:29,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:29,828 INFO L85 PathProgramCache]: Analyzing trace with hash 278462556, now seen corresponding path program 1 times [2024-10-11 17:58:29,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:29,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145562800] [2024-10-11 17:58:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:29,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:58:29,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770585647] [2024-10-11 17:58:29,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:29,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:29,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:29,938 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:29,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 17:58:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:30,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-11 17:58:30,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:30,275 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 7 [2024-10-11 17:58:30,324 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 13 treesize of output 9 [2024-10-11 17:58:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-11 17:58:30,386 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:58:30,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:30,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145562800] [2024-10-11 17:58:30,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:58:30,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770585647] [2024-10-11 17:58:30,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770585647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:58:30,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:58:30,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:58:30,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834954910] [2024-10-11 17:58:30,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:58:30,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 17:58:30,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:30,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 17:58:30,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:58:30,393 INFO L87 Difference]: Start difference. First operand 187 states and 202 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 17:58:30,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:30,599 INFO L93 Difference]: Finished difference Result 195 states and 210 transitions. [2024-10-11 17:58:30,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 17:58:30,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2024-10-11 17:58:30,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:30,600 INFO L225 Difference]: With dead ends: 195 [2024-10-11 17:58:30,601 INFO L226 Difference]: Without dead ends: 189 [2024-10-11 17:58:30,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:58:30,602 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 3 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:30,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 601 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:58:30,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-10-11 17:58:30,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-10-11 17:58:30,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 93 states have (on average 2.064516129032258) internal successors, (192), 180 states have internal predecessors, (192), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 17:58:30,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 204 transitions. [2024-10-11 17:58:30,611 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 204 transitions. Word has length 55 [2024-10-11 17:58:30,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:30,611 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 204 transitions. [2024-10-11 17:58:30,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 17:58:30,611 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 204 transitions. [2024-10-11 17:58:30,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-11 17:58:30,613 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:30,613 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:58:30,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 17:58:30,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:30,814 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:30,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:30,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1816595818, now seen corresponding path program 1 times [2024-10-11 17:58:30,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:30,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344864941] [2024-10-11 17:58:30,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:30,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:58:31,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100180624] [2024-10-11 17:58:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:31,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:31,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:31,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:31,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 17:58:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:31,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 17:58:31,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:31,322 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 6 treesize of output 5 [2024-10-11 17:58:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-11 17:58:31,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:58:31,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:31,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344864941] [2024-10-11 17:58:31,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:58:31,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100180624] [2024-10-11 17:58:31,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100180624] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:58:31,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:58:31,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:58:31,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090733261] [2024-10-11 17:58:31,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:58:31,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 17:58:31,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:31,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 17:58:31,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 17:58:31,344 INFO L87 Difference]: Start difference. First operand 189 states and 204 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 17:58:31,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:31,489 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2024-10-11 17:58:31,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 17:58:31,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2024-10-11 17:58:31,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:31,491 INFO L225 Difference]: With dead ends: 188 [2024-10-11 17:58:31,491 INFO L226 Difference]: Without dead ends: 188 [2024-10-11 17:58:31,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:58:31,492 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 9 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:31,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 454 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:58:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-10-11 17:58:31,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2024-10-11 17:58:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 93 states have (on average 2.053763440860215) internal successors, (191), 179 states have internal predecessors, (191), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 17:58:31,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 203 transitions. [2024-10-11 17:58:31,506 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 203 transitions. Word has length 60 [2024-10-11 17:58:31,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:31,508 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 203 transitions. [2024-10-11 17:58:31,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-11 17:58:31,508 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 203 transitions. [2024-10-11 17:58:31,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 17:58:31,509 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:31,510 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:58:31,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 17:58:31,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:31,711 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:31,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:31,711 INFO L85 PathProgramCache]: Analyzing trace with hash -918209506, now seen corresponding path program 1 times [2024-10-11 17:58:31,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:31,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214729036] [2024-10-11 17:58:31,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:31,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:32,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:58:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:32,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 17:58:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:32,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-11 17:58:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:32,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-11 17:58:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:32,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 17:58:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:32,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-11 17:58:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:32,469 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 72 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-11 17:58:32,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:32,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214729036] [2024-10-11 17:58:32,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214729036] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:32,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117994899] [2024-10-11 17:58:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:32,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:32,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:32,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:32,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 17:58:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:32,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 17:58:32,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:32,764 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2024-10-11 17:58:32,802 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-11 17:58:32,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-10-11 17:58:32,816 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 77 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 8 not checked. [2024-10-11 17:58:32,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:33,073 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-11 17:58:33,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2024-10-11 17:58:33,097 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 77 proven. 9 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-11 17:58:33,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117994899] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:58:33,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:58:33,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 16 [2024-10-11 17:58:33,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773820650] [2024-10-11 17:58:33,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:33,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 17:58:33,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:33,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 17:58:33,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=194, Unknown=1, NotChecked=28, Total=272 [2024-10-11 17:58:33,100 INFO L87 Difference]: Start difference. First operand 188 states and 203 transitions. Second operand has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:58:33,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:33,772 INFO L93 Difference]: Finished difference Result 184 states and 199 transitions. [2024-10-11 17:58:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 17:58:33,772 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2024-10-11 17:58:33,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:33,774 INFO L225 Difference]: With dead ends: 184 [2024-10-11 17:58:33,774 INFO L226 Difference]: Without dead ends: 184 [2024-10-11 17:58:33,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=274, Unknown=1, NotChecked=34, Total=380 [2024-10-11 17:58:33,775 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 15 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 184 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:33,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1210 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1008 Invalid, 0 Unknown, 184 Unchecked, 0.6s Time] [2024-10-11 17:58:33,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-11 17:58:33,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-10-11 17:58:33,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 93 states have (on average 2.010752688172043) internal successors, (187), 175 states have internal predecessors, (187), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 17:58:33,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 199 transitions. [2024-10-11 17:58:33,782 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 199 transitions. Word has length 66 [2024-10-11 17:58:33,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:33,783 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 199 transitions. [2024-10-11 17:58:33,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:58:33,783 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 199 transitions. [2024-10-11 17:58:33,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 17:58:33,784 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:33,784 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:58:33,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 17:58:33,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-11 17:58:33,989 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:33,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:33,989 INFO L85 PathProgramCache]: Analyzing trace with hash -918209505, now seen corresponding path program 1 times [2024-10-11 17:58:33,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:33,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776024125] [2024-10-11 17:58:33,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:33,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:58:34,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496983205] [2024-10-11 17:58:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:34,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:34,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:34,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:34,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 17:58:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:34,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-11 17:58:34,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:34,568 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-10-11 17:58:34,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:58:34,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:58:34,626 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:58:34,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-11 17:58:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 9 not checked. [2024-10-11 17:58:34,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:34,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:34,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776024125] [2024-10-11 17:58:34,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:58:34,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496983205] [2024-10-11 17:58:34,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496983205] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:34,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:58:34,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-11 17:58:34,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658425186] [2024-10-11 17:58:34,746 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:34,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 17:58:34,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:34,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 17:58:34,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=129, Unknown=1, NotChecked=22, Total=182 [2024-10-11 17:58:34,748 INFO L87 Difference]: Start difference. First operand 184 states and 199 transitions. Second operand has 12 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 17:58:35,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:35,442 INFO L93 Difference]: Finished difference Result 180 states and 195 transitions. [2024-10-11 17:58:35,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 17:58:35,442 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2024-10-11 17:58:35,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:35,444 INFO L225 Difference]: With dead ends: 180 [2024-10-11 17:58:35,444 INFO L226 Difference]: Without dead ends: 180 [2024-10-11 17:58:35,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=229, Unknown=1, NotChecked=30, Total=306 [2024-10-11 17:58:35,445 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 25 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:35,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 763 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 878 Invalid, 0 Unknown, 179 Unchecked, 0.6s Time] [2024-10-11 17:58:35,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-10-11 17:58:35,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-10-11 17:58:35,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 93 states have (on average 1.967741935483871) internal successors, (183), 171 states have internal predecessors, (183), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 17:58:35,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 195 transitions. [2024-10-11 17:58:35,459 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 195 transitions. Word has length 66 [2024-10-11 17:58:35,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:35,460 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 195 transitions. [2024-10-11 17:58:35,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 17:58:35,460 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 195 transitions. [2024-10-11 17:58:35,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-11 17:58:35,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:35,465 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:58:35,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 17:58:35,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:35,666 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:35,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:35,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1930750387, now seen corresponding path program 1 times [2024-10-11 17:58:35,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:35,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110234047] [2024-10-11 17:58:35,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:35,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:36,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:58:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:36,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 17:58:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:36,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-11 17:58:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:36,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-11 17:58:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:36,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 17:58:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:36,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-11 17:58:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:36,170 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-10-11 17:58:36,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:36,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110234047] [2024-10-11 17:58:36,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110234047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:58:36,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:58:36,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 17:58:36,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938021140] [2024-10-11 17:58:36,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:58:36,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:58:36,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:36,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:58:36,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:58:36,173 INFO L87 Difference]: Start difference. First operand 180 states and 195 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-11 17:58:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:36,584 INFO L93 Difference]: Finished difference Result 179 states and 194 transitions. [2024-10-11 17:58:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 17:58:36,584 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 68 [2024-10-11 17:58:36,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:36,586 INFO L225 Difference]: With dead ends: 179 [2024-10-11 17:58:36,586 INFO L226 Difference]: Without dead ends: 179 [2024-10-11 17:58:36,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-11 17:58:36,587 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 7 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:36,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 828 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 17:58:36,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-10-11 17:58:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-10-11 17:58:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 93 states have (on average 1.956989247311828) internal successors, (182), 170 states have internal predecessors, (182), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 17:58:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 194 transitions. [2024-10-11 17:58:36,592 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 194 transitions. Word has length 68 [2024-10-11 17:58:36,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:36,593 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 194 transitions. [2024-10-11 17:58:36,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-11 17:58:36,593 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 194 transitions. [2024-10-11 17:58:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-11 17:58:36,594 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:36,594 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:58:36,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 17:58:36,594 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:36,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:36,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1930750386, now seen corresponding path program 1 times [2024-10-11 17:58:36,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:36,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431038586] [2024-10-11 17:58:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:36,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:37,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:58:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:37,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 17:58:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:37,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-11 17:58:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:37,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-11 17:58:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:37,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 17:58:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:37,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-11 17:58:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 72 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-11 17:58:37,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:37,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431038586] [2024-10-11 17:58:37,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431038586] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:37,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555789316] [2024-10-11 17:58:37,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:37,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:37,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:37,747 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:37,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 17:58:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:38,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-11 17:58:38,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:38,112 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 10 treesize of output 9 [2024-10-11 17:58:47,492 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-10-11 17:58:47,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:58:47,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-11 17:58:47,596 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:58:47,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-11 17:58:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 74 proven. 9 refuted. 0 times theorem prover too weak. 62 trivial. 11 not checked. [2024-10-11 17:58:47,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:47,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555789316] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:47,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:58:47,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-10-11 17:58:47,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318538992] [2024-10-11 17:58:47,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:47,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 17:58:47,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:47,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 17:58:47,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=623, Unknown=3, NotChecked=50, Total=756 [2024-10-11 17:58:47,757 INFO L87 Difference]: Start difference. First operand 179 states and 194 transitions. Second operand has 26 states, 24 states have (on average 2.25) internal successors, (54), 20 states have internal predecessors, (54), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 17:58:51,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-11 17:58:53,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:53,461 INFO L93 Difference]: Finished difference Result 190 states and 212 transitions. [2024-10-11 17:58:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 17:58:53,462 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.25) internal successors, (54), 20 states have internal predecessors, (54), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2024-10-11 17:58:53,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:53,465 INFO L225 Difference]: With dead ends: 190 [2024-10-11 17:58:53,466 INFO L226 Difference]: Without dead ends: 187 [2024-10-11 17:58:53,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=131, Invalid=926, Unknown=3, NotChecked=62, Total=1122 [2024-10-11 17:58:53,468 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 10 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:53,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1458 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1669 Invalid, 1 Unknown, 188 Unchecked, 5.3s Time] [2024-10-11 17:58:53,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-10-11 17:58:53,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2024-10-11 17:58:53,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 96 states have (on average 1.9375) internal successors, (186), 174 states have internal predecessors, (186), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-10-11 17:58:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 202 transitions. [2024-10-11 17:58:53,479 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 202 transitions. Word has length 68 [2024-10-11 17:58:53,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:53,480 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 202 transitions. [2024-10-11 17:58:53,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.25) internal successors, (54), 20 states have internal predecessors, (54), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 17:58:53,480 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 202 transitions. [2024-10-11 17:58:53,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-11 17:58:53,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:53,483 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:58:53,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 17:58:53,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 17:58:53,684 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:53,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:53,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1536974864, now seen corresponding path program 2 times [2024-10-11 17:58:53,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:53,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457429088] [2024-10-11 17:58:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:53,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:54,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:58:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:54,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 17:58:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:54,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-11 17:58:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:54,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-11 17:58:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:54,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 17:58:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:54,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-11 17:58:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 80 proven. 14 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-11 17:58:54,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:54,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457429088] [2024-10-11 17:58:54,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457429088] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:54,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876495521] [2024-10-11 17:58:54,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:58:54,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:54,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:54,969 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:54,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 17:58:55,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 17:58:55,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:58:55,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-11 17:58:55,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:55,301 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 [2024-10-11 17:59:04,097 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-11 17:59:04,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-10-11 17:59:04,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-11 17:59:04,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-11 17:59:04,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2024-10-11 17:59:04,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2024-10-11 17:59:04,289 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 84 proven. 23 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-11 17:59:04,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:59:04,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876495521] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:04,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:59:04,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 32 [2024-10-11 17:59:04,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055123195] [2024-10-11 17:59:04,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:59:04,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-11 17:59:04,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:59:04,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-11 17:59:04,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1156, Unknown=2, NotChecked=0, Total=1260 [2024-10-11 17:59:04,528 INFO L87 Difference]: Start difference. First operand 183 states and 202 transitions. Second operand has 32 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 26 states have internal predecessors, (58), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 17:59:06,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:59:06,637 INFO L93 Difference]: Finished difference Result 195 states and 222 transitions. [2024-10-11 17:59:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 17:59:06,638 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 26 states have internal predecessors, (58), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2024-10-11 17:59:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:59:06,639 INFO L225 Difference]: With dead ends: 195 [2024-10-11 17:59:06,639 INFO L226 Difference]: Without dead ends: 192 [2024-10-11 17:59:06,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=176, Invalid=1802, Unknown=2, NotChecked=0, Total=1980 [2024-10-11 17:59:06,640 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 11 mSDsluCounter, 2259 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-11 17:59:06,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2413 Invalid, 2246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-11 17:59:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-10-11 17:59:06,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 184. [2024-10-11 17:59:06,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 97 states have (on average 1.9381443298969072) internal successors, (188), 175 states have internal predecessors, (188), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-10-11 17:59:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 204 transitions. [2024-10-11 17:59:06,647 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 204 transitions. Word has length 69 [2024-10-11 17:59:06,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:59:06,647 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 204 transitions. [2024-10-11 17:59:06,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 26 states have internal predecessors, (58), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 17:59:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 204 transitions. [2024-10-11 17:59:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-11 17:59:06,648 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:59:06,649 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:59:06,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 17:59:06,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:59:06,853 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:59:06,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:59:06,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1662275214, now seen corresponding path program 3 times [2024-10-11 17:59:06,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:59:06,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957803800] [2024-10-11 17:59:06,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:59:06,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:59:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:07,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:59:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:07,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-11 17:59:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:07,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-11 17:59:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:07,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-11 17:59:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:07,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 17:59:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:08,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 17:59:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 88 proven. 19 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-11 17:59:08,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:59:08,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957803800] [2024-10-11 17:59:08,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957803800] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:08,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102554903] [2024-10-11 17:59:08,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 17:59:08,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:59:08,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:59:08,121 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:59:08,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 17:59:08,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 17:59:08,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:59:08,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 17:59:08,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:59:08,369 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 [2024-10-11 17:59:08,820 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 15 treesize of output 11 [2024-10-11 17:59:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-10-11 17:59:09,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:59:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-10-11 17:59:09,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102554903] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:59:09,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:59:09,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 6, 6] total 24 [2024-10-11 17:59:09,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109491526] [2024-10-11 17:59:09,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:59:09,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 17:59:09,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:59:09,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 17:59:09,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-10-11 17:59:09,438 INFO L87 Difference]: Start difference. First operand 184 states and 204 transitions. Second operand has 24 states, 23 states have (on average 2.347826086956522) internal successors, (54), 21 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-11 17:59:20,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:59:20,722 INFO L93 Difference]: Finished difference Result 203 states and 228 transitions. [2024-10-11 17:59:20,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 17:59:20,723 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.347826086956522) internal successors, (54), 21 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 70 [2024-10-11 17:59:20,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:59:20,724 INFO L225 Difference]: With dead ends: 203 [2024-10-11 17:59:20,724 INFO L226 Difference]: Without dead ends: 191 [2024-10-11 17:59:20,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=274, Invalid=1284, Unknown=2, NotChecked=0, Total=1560 [2024-10-11 17:59:20,726 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 36 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-11 17:59:20,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1466 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-11 17:59:20,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-10-11 17:59:20,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 188. [2024-10-11 17:59:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 101 states have (on average 1.900990099009901) internal successors, (192), 179 states have internal predecessors, (192), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-10-11 17:59:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 208 transitions. [2024-10-11 17:59:20,733 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 208 transitions. Word has length 70 [2024-10-11 17:59:20,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:59:20,733 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 208 transitions. [2024-10-11 17:59:20,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.347826086956522) internal successors, (54), 21 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-11 17:59:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 208 transitions. [2024-10-11 17:59:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-11 17:59:20,734 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:59:20,734 INFO L215 NwaCegarLoop]: trace histogram [16, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:59:20,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 17:59:20,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 17:59:20,935 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:59:20,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:59:20,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2118971886, now seen corresponding path program 4 times [2024-10-11 17:59:20,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:59:20,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529757743] [2024-10-11 17:59:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:59:20,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:59:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:21,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:59:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:21,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 17:59:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:21,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-11 17:59:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:21,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 17:59:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:21,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-11 17:59:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:22,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-11 17:59:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 160 proven. 40 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-11 17:59:22,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:59:22,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529757743] [2024-10-11 17:59:22,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529757743] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:22,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956772429] [2024-10-11 17:59:22,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 17:59:22,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:59:22,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:59:22,394 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:59:22,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 17:59:22,818 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 17:59:22,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:59:22,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-11 17:59:22,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:59:22,836 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 10 treesize of output 9 [2024-10-11 17:59:23,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-11 17:59:23,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-11 17:59:23,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 9 [2024-10-11 17:59:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 110 proven. 10 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-10-11 17:59:23,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:59:24,591 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 110 proven. 10 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-10-11 17:59:24,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956772429] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:59:24,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:59:24,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 39 [2024-10-11 17:59:24,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223200368] [2024-10-11 17:59:24,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:59:24,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-11 17:59:24,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:59:24,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-11 17:59:24,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2024-10-11 17:59:24,594 INFO L87 Difference]: Start difference. First operand 188 states and 208 transitions. Second operand has 39 states, 38 states have (on average 1.736842105263158) internal successors, (66), 34 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-11 17:59:27,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:59:27,425 INFO L93 Difference]: Finished difference Result 202 states and 228 transitions. [2024-10-11 17:59:27,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 17:59:27,426 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.736842105263158) internal successors, (66), 34 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2024-10-11 17:59:27,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:59:27,427 INFO L225 Difference]: With dead ends: 202 [2024-10-11 17:59:27,427 INFO L226 Difference]: Without dead ends: 198 [2024-10-11 17:59:27,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=269, Invalid=2811, Unknown=0, NotChecked=0, Total=3080 [2024-10-11 17:59:27,428 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 16 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-11 17:59:27,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2513 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-11 17:59:27,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-10-11 17:59:27,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 188. [2024-10-11 17:59:27,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 102 states have (on average 1.892156862745098) internal successors, (193), 179 states have internal predecessors, (193), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-10-11 17:59:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 209 transitions. [2024-10-11 17:59:27,435 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 209 transitions. Word has length 78 [2024-10-11 17:59:27,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:59:27,435 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 209 transitions. [2024-10-11 17:59:27,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.736842105263158) internal successors, (66), 34 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-11 17:59:27,435 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 209 transitions. [2024-10-11 17:59:27,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-11 17:59:27,436 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:59:27,436 INFO L215 NwaCegarLoop]: trace histogram [17, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:59:27,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 17:59:27,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:59:27,637 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:59:27,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:59:27,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2131028954, now seen corresponding path program 1 times [2024-10-11 17:59:27,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:59:27,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972080266] [2024-10-11 17:59:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:59:27,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:59:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:28,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:59:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:28,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 17:59:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:28,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-11 17:59:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:28,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 17:59:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:28,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-11 17:59:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:28,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 17:59:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:28,364 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 171 proven. 43 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-10-11 17:59:28,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:59:28,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972080266] [2024-10-11 17:59:28,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972080266] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:28,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460633264] [2024-10-11 17:59:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:59:28,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:59:28,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:59:28,367 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:59:28,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 17:59:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:28,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-11 17:59:28,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:59:28,747 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#valid| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|))) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-10-11 17:59:28,803 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-11 17:59:28,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-11 17:59:28,829 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2024-10-11 17:59:28,853 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-11 17:59:28,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-10-11 17:59:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 77 not checked. [2024-10-11 17:59:28,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:59:29,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460633264] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:29,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:59:29,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2024-10-11 17:59:29,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885225355] [2024-10-11 17:59:29,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:59:29,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 17:59:29,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:59:29,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 17:59:29,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=256, Unknown=2, NotChecked=66, Total=380 [2024-10-11 17:59:29,059 INFO L87 Difference]: Start difference. First operand 188 states and 209 transitions. Second operand has 17 states, 16 states have (on average 3.5625) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:59:29,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:59:29,579 INFO L93 Difference]: Finished difference Result 184 states and 205 transitions. [2024-10-11 17:59:29,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 17:59:29,580 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.5625) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2024-10-11 17:59:29,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:59:29,581 INFO L225 Difference]: With dead ends: 184 [2024-10-11 17:59:29,581 INFO L226 Difference]: Without dead ends: 184 [2024-10-11 17:59:29,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 101 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=385, Unknown=2, NotChecked=82, Total=552 [2024-10-11 17:59:29,581 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 25 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 347 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 17:59:29,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1034 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 881 Invalid, 0 Unknown, 347 Unchecked, 0.4s Time] [2024-10-11 17:59:29,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-11 17:59:29,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-10-11 17:59:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 102 states have (on average 1.8529411764705883) internal successors, (189), 175 states have internal predecessors, (189), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-10-11 17:59:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2024-10-11 17:59:29,587 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 81 [2024-10-11 17:59:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:59:29,588 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2024-10-11 17:59:29,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.5625) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:59:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2024-10-11 17:59:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-11 17:59:29,589 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:59:29,589 INFO L215 NwaCegarLoop]: trace histogram [17, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:59:29,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 17:59:29,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 17:59:29,790 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:59:29,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:59:29,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2131028955, now seen corresponding path program 1 times [2024-10-11 17:59:29,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:59:29,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338894298] [2024-10-11 17:59:29,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:59:29,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:59:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:30,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:59:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:30,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 17:59:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:30,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-11 17:59:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:30,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 17:59:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:30,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-11 17:59:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:31,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 17:59:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 172 proven. 50 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-11 17:59:31,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:59:31,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338894298] [2024-10-11 17:59:31,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338894298] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:31,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534319698] [2024-10-11 17:59:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:59:31,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:59:31,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:59:31,340 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:59:31,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 17:59:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:31,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-10-11 17:59:31,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:59:31,754 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