./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-0234-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3248e88e6fd49fdcf0a9f78f1aa9e69276951d353f75f39f6bb30d51b2e53989 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 17:55:28,186 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 17:55:28,252 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 17:55:28,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 17:55:28,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 17:55:28,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 17:55:28,283 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 17:55:28,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 17:55:28,284 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 17:55:28,284 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 17:55:28,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 17:55:28,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 17:55:28,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 17:55:28,285 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 17:55:28,286 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 17:55:28,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 17:55:28,286 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 17:55:28,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 17:55:28,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 17:55:28,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 17:55:28,287 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 17:55:28,288 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 17:55:28,288 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 17:55:28,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 17:55:28,289 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 17:55:28,289 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 17:55:28,289 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 17:55:28,289 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 17:55:28,290 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 17:55:28,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 17:55:28,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 17:55:28,290 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 17:55:28,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 17:55:28,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:55:28,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 17:55:28,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 17:55:28,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 17:55:28,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 17:55:28,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 17:55:28,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 17:55:28,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 17:55:28,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 17:55:28,293 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3248e88e6fd49fdcf0a9f78f1aa9e69276951d353f75f39f6bb30d51b2e53989 [2024-10-14 17:55:28,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 17:55:28,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 17:55:28,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 17:55:28,522 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 17:55:28,523 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 17:55:28,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-2.i [2024-10-14 17:55:29,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 17:55:29,987 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 17:55:29,987 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-2.i [2024-10-14 17:55:30,000 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03300146c/b829ef3f771c4aeb8277dd02efc1db02/FLAG7cc54575d [2024-10-14 17:55:30,352 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03300146c/b829ef3f771c4aeb8277dd02efc1db02 [2024-10-14 17:55:30,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 17:55:30,355 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 17:55:30,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 17:55:30,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 17:55:30,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 17:55:30,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:55:30" (1/1) ... [2024-10-14 17:55:30,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72fb28b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30, skipping insertion in model container [2024-10-14 17:55:30,362 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:55:30" (1/1) ... [2024-10-14 17:55:30,388 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 17:55:30,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:55:30,651 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 17:55:30,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:55:30,726 INFO L204 MainTranslator]: Completed translation [2024-10-14 17:55:30,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30 WrapperNode [2024-10-14 17:55:30,727 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 17:55:30,728 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 17:55:30,728 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 17:55:30,728 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 17:55:30,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30" (1/1) ... [2024-10-14 17:55:30,752 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30" (1/1) ... [2024-10-14 17:55:30,788 INFO L138 Inliner]: procedures = 188, calls = 58, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 207 [2024-10-14 17:55:30,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 17:55:30,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 17:55:30,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 17:55:30,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 17:55:30,799 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30" (1/1) ... [2024-10-14 17:55:30,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30" (1/1) ... [2024-10-14 17:55:30,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30" (1/1) ... [2024-10-14 17:55:30,834 INFO L175 MemorySlicer]: Split 31 memory accesses to 3 slices as follows [2, 4, 25]. 81 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 13 writes are split as follows [0, 1, 12]. [2024-10-14 17:55:30,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30" (1/1) ... [2024-10-14 17:55:30,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30" (1/1) ... [2024-10-14 17:55:30,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30" (1/1) ... [2024-10-14 17:55:30,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30" (1/1) ... [2024-10-14 17:55:30,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30" (1/1) ... [2024-10-14 17:55:30,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30" (1/1) ... [2024-10-14 17:55:30,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 17:55:30,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 17:55:30,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 17:55:30,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 17:55:30,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30" (1/1) ... [2024-10-14 17:55:30,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:55:30,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:55:30,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 17:55:30,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 17:55:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 17:55:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 17:55:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 17:55:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 17:55:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-14 17:55:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 17:55:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 17:55:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-14 17:55:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2024-10-14 17:55:30,951 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2024-10-14 17:55:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 17:55:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-14 17:55:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-14 17:55:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-14 17:55:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 17:55:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 17:55:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 17:55:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 17:55:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 17:55:31,055 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 17:55:31,056 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 17:55:31,430 INFO L? ?]: Removed 190 outVars from TransFormulas that were not future-live. [2024-10-14 17:55:31,431 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 17:55:31,477 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 17:55:31,477 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-14 17:55:31,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:55:31 BoogieIcfgContainer [2024-10-14 17:55:31,478 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 17:55:31,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 17:55:31,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 17:55:31,482 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 17:55:31,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:55:30" (1/3) ... [2024-10-14 17:55:31,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6b9a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:55:31, skipping insertion in model container [2024-10-14 17:55:31,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:55:30" (2/3) ... [2024-10-14 17:55:31,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6b9a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:55:31, skipping insertion in model container [2024-10-14 17:55:31,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:55:31" (3/3) ... [2024-10-14 17:55:31,484 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0234-2.i [2024-10-14 17:55:31,498 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 17:55:31,498 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2024-10-14 17:55:31,533 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:55:31,539 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;@5c9b78af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:55:31,539 INFO L334 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2024-10-14 17:55:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 74 states have (on average 2.2432432432432434) internal successors, (166), 144 states have internal predecessors, (166), 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) [2024-10-14 17:55:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-14 17:55:31,547 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:55:31,547 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-14 17:55:31,547 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-10-14 17:55:31,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:55:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash 363768, now seen corresponding path program 1 times [2024-10-14 17:55:31,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:55:31,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092561879] [2024-10-14 17:55:31,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:55:31,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:55:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:55:31,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:55:31,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092561879] [2024-10-14 17:55:31,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092561879] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:55:31,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:55:31,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:55:31,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421556008] [2024-10-14 17:55:31,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:55:31,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 17:55:31,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:55:31,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 17:55:31,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 17:55:31,688 INFO L87 Difference]: Start difference. First operand has 152 states, 74 states have (on average 2.2432432432432434) internal successors, (166), 144 states have internal predecessors, (166), 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) [2024-10-14 17:55:31,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:55:31,758 INFO L93 Difference]: Finished difference Result 152 states and 167 transitions. [2024-10-14 17:55:31,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 17:55:31,761 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 [2024-10-14 17:55:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:55:31,768 INFO L225 Difference]: With dead ends: 152 [2024-10-14 17:55:31,768 INFO L226 Difference]: Without dead ends: 151 [2024-10-14 17:55:31,769 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 [2024-10-14 17:55:31,773 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:55:31,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:55:31,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-14 17:55:31,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-10-14 17:55:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 74 states have (on average 2.081081081081081) internal successors, (154), 143 states have internal predecessors, (154), 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) [2024-10-14 17:55:31,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 166 transitions. [2024-10-14 17:55:31,810 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 166 transitions. Word has length 3 [2024-10-14 17:55:31,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:55:31,811 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 166 transitions. [2024-10-14 17:55:31,811 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) [2024-10-14 17:55:31,811 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 166 transitions. [2024-10-14 17:55:31,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-14 17:55:31,811 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:55:31,812 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 17:55:31,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 17:55:31,812 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 67 more)] === [2024-10-14 17:55:31,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:55:31,813 INFO L85 PathProgramCache]: Analyzing trace with hash 345542927, now seen corresponding path program 1 times [2024-10-14 17:55:31,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:55:31,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242593520] [2024-10-14 17:55:31,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:55:31,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:55:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:55:31,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:55:31,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242593520] [2024-10-14 17:55:31,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242593520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:55:31,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:55:31,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:55:31,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031802169] [2024-10-14 17:55:31,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:55:31,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:55:31,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:55:31,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:55:31,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:55:31,925 INFO L87 Difference]: Start difference. First operand 151 states and 166 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) [2024-10-14 17:55:32,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:55:32,029 INFO L93 Difference]: Finished difference Result 150 states and 165 transitions. [2024-10-14 17:55:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:55:32,029 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 [2024-10-14 17:55:32,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:55:32,031 INFO L225 Difference]: With dead ends: 150 [2024-10-14 17:55:32,031 INFO L226 Difference]: Without dead ends: 150 [2024-10-14 17:55:32,031 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 [2024-10-14 17:55:32,032 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 3 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:55:32,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 233 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:55:32,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-10-14 17:55:32,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-10-14 17:55:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 74 states have (on average 2.0675675675675675) internal successors, (153), 142 states have internal predecessors, (153), 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) [2024-10-14 17:55:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-10-14 17:55:32,044 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 5 [2024-10-14 17:55:32,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:55:32,044 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-10-14 17:55:32,044 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) [2024-10-14 17:55:32,045 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-10-14 17:55:32,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-14 17:55:32,046 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:55:32,046 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 17:55:32,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 17:55:32,047 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 67 more)] === [2024-10-14 17:55:32,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:55:32,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2121896179, now seen corresponding path program 1 times [2024-10-14 17:55:32,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:55:32,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642965399] [2024-10-14 17:55:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:55:32,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:55:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 17:55:32,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004115887] [2024-10-14 17:55:32,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:55:32,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:55:32,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:55:32,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:55:32,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 17:55:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:32,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 17:55:32,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:55:32,245 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 [2024-10-14 17:55:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:55:32,268 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:55:32,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:55:32,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642965399] [2024-10-14 17:55:32,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 17:55:32,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004115887] [2024-10-14 17:55:32,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004115887] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:55:32,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:55:32,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:55:32,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118373156] [2024-10-14 17:55:32,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:55:32,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:55:32,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:55:32,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:55:32,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:55:32,274 INFO L87 Difference]: Start difference. First operand 150 states and 165 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) [2024-10-14 17:55:32,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:55:32,429 INFO L93 Difference]: Finished difference Result 157 states and 172 transitions. [2024-10-14 17:55:32,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:55:32,430 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 [2024-10-14 17:55:32,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:55:32,431 INFO L225 Difference]: With dead ends: 157 [2024-10-14 17:55:32,432 INFO L226 Difference]: Without dead ends: 157 [2024-10-14 17:55:32,432 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 [2024-10-14 17:55:32,434 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 9 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:55:32,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 364 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:55:32,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-10-14 17:55:32,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-10-14 17:55:32,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 80 states have (on average 2.0) internal successors, (160), 148 states have internal predecessors, (160), 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) [2024-10-14 17:55:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 172 transitions. [2024-10-14 17:55:32,449 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 172 transitions. Word has length 6 [2024-10-14 17:55:32,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:55:32,449 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 172 transitions. [2024-10-14 17:55:32,450 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) [2024-10-14 17:55:32,450 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 172 transitions. [2024-10-14 17:55:32,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-14 17:55:32,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:55:32,451 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] [2024-10-14 17:55:32,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 17:55:32,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:55:32,656 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 67 more)] === [2024-10-14 17:55:32,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:55:32,657 INFO L85 PathProgramCache]: Analyzing trace with hash 770565054, now seen corresponding path program 1 times [2024-10-14 17:55:32,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:55:32,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631752860] [2024-10-14 17:55:32,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:55:32,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:55:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 17:55:32,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892354430] [2024-10-14 17:55:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:55:32,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:55:32,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:55:32,715 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:55:32,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 17:55:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:32,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-14 17:55:32,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:55:32,917 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 [2024-10-14 17:55:32,959 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 [2024-10-14 17:55:33,008 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-14 17:55:33,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:55:33,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:55:33,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631752860] [2024-10-14 17:55:33,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 17:55:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892354430] [2024-10-14 17:55:33,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892354430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:55:33,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:55:33,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:55:33,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282264991] [2024-10-14 17:55:33,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:55:33,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 17:55:33,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:55:33,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 17:55:33,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 17:55:33,013 INFO L87 Difference]: Start difference. First operand 157 states and 172 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) [2024-10-14 17:55:33,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:55:33,192 INFO L93 Difference]: Finished difference Result 165 states and 180 transitions. [2024-10-14 17:55:33,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 17:55:33,192 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 [2024-10-14 17:55:33,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:55:33,193 INFO L225 Difference]: With dead ends: 165 [2024-10-14 17:55:33,193 INFO L226 Difference]: Without dead ends: 159 [2024-10-14 17:55:33,194 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 [2024-10-14 17:55:33,194 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 3 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 17:55:33,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 500 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 17:55:33,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-10-14 17:55:33,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-10-14 17:55:33,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 82 states have (on average 1.975609756097561) internal successors, (162), 150 states have internal predecessors, (162), 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) [2024-10-14 17:55:33,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 174 transitions. [2024-10-14 17:55:33,216 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 174 transitions. Word has length 55 [2024-10-14 17:55:33,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:55:33,216 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 174 transitions. [2024-10-14 17:55:33,217 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) [2024-10-14 17:55:33,217 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 174 transitions. [2024-10-14 17:55:33,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-14 17:55:33,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:55:33,218 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] [2024-10-14 17:55:33,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 17:55:33,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-14 17:55:33,423 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 67 more)] === [2024-10-14 17:55:33,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:55:33,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1610985622, now seen corresponding path program 1 times [2024-10-14 17:55:33,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:55:33,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650979425] [2024-10-14 17:55:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:55:33,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:55:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 17:55:33,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581744606] [2024-10-14 17:55:33,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:55:33,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:55:33,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:55:33,569 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:55:33,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 17:55:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:33,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-14 17:55:33,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:55:33,801 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 [2024-10-14 17:55:33,832 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 [2024-10-14 17:55:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 54 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-14 17:55:33,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:55:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-14 17:55:34,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:55:34,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650979425] [2024-10-14 17:55:34,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 17:55:34,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581744606] [2024-10-14 17:55:34,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581744606] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:55:34,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 17:55:34,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2024-10-14 17:55:34,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089698742] [2024-10-14 17:55:34,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 17:55:34,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 17:55:34,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:55:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 17:55:34,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-14 17:55:34,044 INFO L87 Difference]: Start difference. First operand 159 states and 174 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-14 17:55:34,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:55:34,363 INFO L93 Difference]: Finished difference Result 172 states and 188 transitions. [2024-10-14 17:55:34,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 17:55:34,364 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 60 [2024-10-14 17:55:34,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:55:34,364 INFO L225 Difference]: With dead ends: 172 [2024-10-14 17:55:34,365 INFO L226 Difference]: Without dead ends: 163 [2024-10-14 17:55:34,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2024-10-14 17:55:34,365 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 16 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 17:55:34,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 736 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 17:55:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-10-14 17:55:34,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-10-14 17:55:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 86 states have (on average 1.930232558139535) internal successors, (166), 154 states have internal predecessors, (166), 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) [2024-10-14 17:55:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 178 transitions. [2024-10-14 17:55:34,375 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 178 transitions. Word has length 60 [2024-10-14 17:55:34,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:55:34,376 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 178 transitions. [2024-10-14 17:55:34,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-14 17:55:34,376 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 178 transitions. [2024-10-14 17:55:34,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-14 17:55:34,380 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:55:34,380 INFO L215 NwaCegarLoop]: trace histogram [20, 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] [2024-10-14 17:55:34,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 17:55:34,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:55:34,581 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-10-14 17:55:34,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:55:34,582 INFO L85 PathProgramCache]: Analyzing trace with hash 495024830, now seen corresponding path program 2 times [2024-10-14 17:55:34,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:55:34,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031642302] [2024-10-14 17:55:34,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:55:34,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:55:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 17:55:34,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430081883] [2024-10-14 17:55:34,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 17:55:34,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:55:34,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:55:34,789 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:55:34,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 17:55:35,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 17:55:35,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:55:35,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-14 17:55:35,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:55:35,171 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 [2024-10-14 17:55:35,199 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 [2024-10-14 17:55:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 127 proven. 10 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2024-10-14 17:55:35,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:55:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 15 proven. 130 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-10-14 17:55:35,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:55:35,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031642302] [2024-10-14 17:55:35,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 17:55:35,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430081883] [2024-10-14 17:55:35,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430081883] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:55:35,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 17:55:35,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-10-14 17:55:35,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364013922] [2024-10-14 17:55:35,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 17:55:35,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 17:55:35,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:55:35,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 17:55:35,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-14 17:55:35,529 INFO L87 Difference]: Start difference. First operand 163 states and 178 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 17:55:36,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:55:36,126 INFO L93 Difference]: Finished difference Result 179 states and 198 transitions. [2024-10-14 17:55:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 17:55:36,126 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 75 [2024-10-14 17:55:36,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:55:36,127 INFO L225 Difference]: With dead ends: 179 [2024-10-14 17:55:36,127 INFO L226 Difference]: Without dead ends: 170 [2024-10-14 17:55:36,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=620, Unknown=0, NotChecked=0, Total=870 [2024-10-14 17:55:36,128 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 20 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 17:55:36,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1383 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 17:55:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-10-14 17:55:36,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-10-14 17:55:36,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 93 states have (on average 1.8602150537634408) internal successors, (173), 161 states have internal predecessors, (173), 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) [2024-10-14 17:55:36,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 185 transitions. [2024-10-14 17:55:36,134 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 185 transitions. Word has length 75 [2024-10-14 17:55:36,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:55:36,134 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 185 transitions. [2024-10-14 17:55:36,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 17:55:36,134 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 185 transitions. [2024-10-14 17:55:36,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-14 17:55:36,135 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:55:36,135 INFO L215 NwaCegarLoop]: trace histogram [40, 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] [2024-10-14 17:55:36,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 17:55:36,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:55:36,336 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-10-14 17:55:36,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:55:36,336 INFO L85 PathProgramCache]: Analyzing trace with hash 181572030, now seen corresponding path program 3 times [2024-10-14 17:55:36,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:55:36,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175910552] [2024-10-14 17:55:36,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:55:36,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:55:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 17:55:36,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107655812] [2024-10-14 17:55:36,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 17:55:36,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:55:36,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:55:36,521 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:55:36,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 17:55:36,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 17:55:36,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:55:36,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 17:55:36,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:55:36,726 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 [2024-10-14 17:55:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-10-14 17:55:36,743 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:55:36,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:55:36,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175910552] [2024-10-14 17:55:36,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 17:55:36,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107655812] [2024-10-14 17:55:36,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107655812] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:55:36,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:55:36,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:55:36,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585984956] [2024-10-14 17:55:36,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:55:36,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:55:36,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:55:36,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:55:36,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:55:36,745 INFO L87 Difference]: Start difference. First operand 170 states and 185 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) [2024-10-14 17:55:36,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:55:36,835 INFO L93 Difference]: Finished difference Result 169 states and 184 transitions. [2024-10-14 17:55:36,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:55:36,835 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 95 [2024-10-14 17:55:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:55:36,836 INFO L225 Difference]: With dead ends: 169 [2024-10-14 17:55:36,836 INFO L226 Difference]: Without dead ends: 169 [2024-10-14 17:55:36,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 17:55:36,837 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 9 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:55:36,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 382 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:55:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-10-14 17:55:36,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-10-14 17:55:36,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 93 states have (on average 1.8494623655913978) internal successors, (172), 160 states have internal predecessors, (172), 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) [2024-10-14 17:55:36,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 184 transitions. [2024-10-14 17:55:36,842 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 184 transitions. Word has length 95 [2024-10-14 17:55:36,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:55:36,842 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 184 transitions. [2024-10-14 17:55:36,843 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) [2024-10-14 17:55:36,843 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 184 transitions. [2024-10-14 17:55:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-14 17:55:36,844 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:55:36,844 INFO L215 NwaCegarLoop]: trace histogram [45, 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] [2024-10-14 17:55:36,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 17:55:37,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:55:37,048 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-10-14 17:55:37,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:55:37,048 INFO L85 PathProgramCache]: Analyzing trace with hash 371802002, now seen corresponding path program 1 times [2024-10-14 17:55:37,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:55:37,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551494809] [2024-10-14 17:55:37,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:55:37,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:55:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:37,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 17:55:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:37,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 17:55:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:37,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 17:55:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:37,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 17:55:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:37,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 17:55:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:37,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-14 17:55:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:37,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 580 proven. 59 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2024-10-14 17:55:37,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:55:37,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551494809] [2024-10-14 17:55:37,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551494809] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:55:37,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538979163] [2024-10-14 17:55:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:55:37,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:55:37,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:55:37,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:55:37,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 17:55:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:38,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-14 17:55:38,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:55:38,311 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 [2024-10-14 17:55:38,399 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-14 17:55:38,400 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 [2024-10-14 17:55:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 585 proven. 1 refuted. 0 times theorem prover too weak. 721 trivial. 58 not checked. [2024-10-14 17:55:38,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:55:38,639 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-14 17:55:38,640 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 [2024-10-14 17:55:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 585 proven. 59 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2024-10-14 17:55:38,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538979163] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:55:38,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:55:38,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 16 [2024-10-14 17:55:38,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283619533] [2024-10-14 17:55:38,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:55:38,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 17:55:38,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:55:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 17:55:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=194, Unknown=1, NotChecked=28, Total=272 [2024-10-14 17:55:38,666 INFO L87 Difference]: Start difference. First operand 169 states and 184 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) [2024-10-14 17:55:39,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:55:39,127 INFO L93 Difference]: Finished difference Result 167 states and 182 transitions. [2024-10-14 17:55:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 17:55:39,128 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 105 [2024-10-14 17:55:39,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:55:39,129 INFO L225 Difference]: With dead ends: 167 [2024-10-14 17:55:39,129 INFO L226 Difference]: Without dead ends: 167 [2024-10-14 17:55:39,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 210 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=274, Unknown=1, NotChecked=34, Total=380 [2024-10-14 17:55:39,129 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 10 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 17:55:39,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1039 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 845 Invalid, 0 Unknown, 156 Unchecked, 0.4s Time] [2024-10-14 17:55:39,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-10-14 17:55:39,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-10-14 17:55:39,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 93 states have (on average 1.8279569892473118) internal successors, (170), 158 states have internal predecessors, (170), 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) [2024-10-14 17:55:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2024-10-14 17:55:39,133 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 182 transitions. Word has length 105 [2024-10-14 17:55:39,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:55:39,134 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 182 transitions. [2024-10-14 17:55:39,134 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) [2024-10-14 17:55:39,134 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 182 transitions. [2024-10-14 17:55:39,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-14 17:55:39,135 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:55:39,135 INFO L215 NwaCegarLoop]: trace histogram [45, 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] [2024-10-14 17:55:39,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 17:55:39,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:55:39,335 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-10-14 17:55:39,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:55:39,336 INFO L85 PathProgramCache]: Analyzing trace with hash 371802003, now seen corresponding path program 1 times [2024-10-14 17:55:39,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:55:39,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757065093] [2024-10-14 17:55:39,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:55:39,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:55:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:40,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 17:55:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:40,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 17:55:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:40,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 17:55:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:40,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 17:55:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:40,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 17:55:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:41,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-14 17:55:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 580 proven. 95 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-10-14 17:55:41,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:55:41,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757065093] [2024-10-14 17:55:41,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757065093] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:55:41,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831296425] [2024-10-14 17:55:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:55:41,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:55:41,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:55:41,353 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:55:41,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 17:55:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:55:42,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-10-14 17:55:42,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:55:42,296 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 [2024-10-14 17:55:52,991 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 [2024-10-14 17:55:53,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 17:55:53,048 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 [2024-10-14 17:55:53,055 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 17:55:53,055 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 [2024-10-14 17:55:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 445 proven. 499 refuted. 0 times theorem prover too weak. 272 trivial. 149 not checked. [2024-10-14 17:55:53,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:55:53,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831296425] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:55:53,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 17:55:53,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27] total 46 [2024-10-14 17:55:53,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975872682] [2024-10-14 17:55:53,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 17:55:53,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-14 17:55:53,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:55:53,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-14 17:55:53,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2111, Unknown=2, NotChecked=92, Total=2352 [2024-10-14 17:55:53,272 INFO L87 Difference]: Start difference. First operand 167 states and 182 transitions. Second operand has 47 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 41 states have internal predecessors, (74), 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) [2024-10-14 17:55:57,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 17:56:00,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:56:00,684 INFO L93 Difference]: Finished difference Result 189 states and 216 transitions. [2024-10-14 17:56:00,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-14 17:56:00,684 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 41 states have internal predecessors, (74), 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 105 [2024-10-14 17:56:00,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:56:00,687 INFO L225 Difference]: With dead ends: 189 [2024-10-14 17:56:00,687 INFO L226 Difference]: Without dead ends: 189 [2024-10-14 17:56:00,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=314, Invalid=3720, Unknown=2, NotChecked=124, Total=4160 [2024-10-14 17:56:00,688 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 43 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-10-14 17:56:00,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2602 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2711 Invalid, 1 Unknown, 173 Unchecked, 5.8s Time] [2024-10-14 17:56:00,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-10-14 17:56:00,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 165. [2024-10-14 17:56:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 93 states have (on average 1.8064516129032258) internal successors, (168), 156 states have internal predecessors, (168), 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) [2024-10-14 17:56:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 180 transitions. [2024-10-14 17:56:00,693 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 180 transitions. Word has length 105 [2024-10-14 17:56:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:56:00,693 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 180 transitions. [2024-10-14 17:56:00,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 41 states have internal predecessors, (74), 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) [2024-10-14 17:56:00,694 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 180 transitions. [2024-10-14 17:56:00,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-14 17:56:00,694 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:56:00,695 INFO L215 NwaCegarLoop]: trace histogram [45, 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] [2024-10-14 17:56:00,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 17:56:00,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:56:00,898 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-10-14 17:56:00,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:56:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1359030994, now seen corresponding path program 1 times [2024-10-14 17:56:00,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:56:00,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967935127] [2024-10-14 17:56:00,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:56:00,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:56:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:01,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 17:56:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:01,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 17:56:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:01,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 17:56:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:01,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 17:56:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:01,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 17:56:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:01,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-14 17:56:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 693 proven. 145 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2024-10-14 17:56:01,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:56:01,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967935127] [2024-10-14 17:56:01,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967935127] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:56:01,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859516549] [2024-10-14 17:56:01,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:56:01,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:56:01,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:56:01,950 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:56:01,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 17:56:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:02,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-14 17:56:02,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:56:02,378 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 [2024-10-14 17:56:02,431 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-14 17:56:02,431 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 [2024-10-14 17:56:02,453 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 [2024-10-14 17:56:02,473 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-14 17:56:02,474 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 [2024-10-14 17:56:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 701 proven. 1 refuted. 0 times theorem prover too weak. 460 trivial. 203 not checked. [2024-10-14 17:56:02,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:56:02,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859516549] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:56:02,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 17:56:02,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2024-10-14 17:56:02,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111751963] [2024-10-14 17:56:02,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 17:56:02,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 17:56:02,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:56:02,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 17:56:02,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=256, Unknown=2, NotChecked=66, Total=380 [2024-10-14 17:56:02,647 INFO L87 Difference]: Start difference. First operand 165 states and 180 transitions. Second operand has 17 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 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) [2024-10-14 17:56:03,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:56:03,093 INFO L93 Difference]: Finished difference Result 162 states and 177 transitions. [2024-10-14 17:56:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 17:56:03,093 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 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 106 [2024-10-14 17:56:03,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:56:03,096 INFO L225 Difference]: With dead ends: 162 [2024-10-14 17:56:03,096 INFO L226 Difference]: Without dead ends: 162 [2024-10-14 17:56:03,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=385, Unknown=2, NotChecked=82, Total=552 [2024-10-14 17:56:03,097 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 21 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 17:56:03,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 931 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 751 Invalid, 0 Unknown, 301 Unchecked, 0.4s Time] [2024-10-14 17:56:03,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-10-14 17:56:03,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-10-14 17:56:03,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 93 states have (on average 1.7741935483870968) internal successors, (165), 153 states have internal predecessors, (165), 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) [2024-10-14 17:56:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 177 transitions. [2024-10-14 17:56:03,102 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 177 transitions. Word has length 106 [2024-10-14 17:56:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:56:03,102 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 177 transitions. [2024-10-14 17:56:03,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 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) [2024-10-14 17:56:03,103 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 177 transitions. [2024-10-14 17:56:03,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-14 17:56:03,104 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:56:03,107 INFO L215 NwaCegarLoop]: trace histogram [45, 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] [2024-10-14 17:56:03,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 17:56:03,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-14 17:56:03,308 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-10-14 17:56:03,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:56:03,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1359030993, now seen corresponding path program 1 times [2024-10-14 17:56:03,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:56:03,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233080952] [2024-10-14 17:56:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:56:03,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:56:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:05,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 17:56:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:05,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 17:56:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:05,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 17:56:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:05,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 17:56:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:05,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 17:56:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:05,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-14 17:56:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:05,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 693 proven. 240 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-10-14 17:56:05,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:56:05,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233080952] [2024-10-14 17:56:05,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233080952] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:56:05,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305049216] [2024-10-14 17:56:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:56:05,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:56:05,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:56:05,973 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:56:05,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 17:56:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:56:07,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-10-14 17:56:07,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:56:07,437 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 [2024-10-14 17:56:29,520 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|) (= (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 [2024-10-14 17:56:29,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 17:56:29,595 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 [2024-10-14 17:56:29,608 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-10-14 17:56:29,608 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 17 treesize of output 21 [2024-10-14 17:56:29,786 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 [2024-10-14 17:56:29,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 17:56:29,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2024-10-14 17:56:29,854 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-10-14 17:56:29,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-10-14 17:56:36,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 456 proven. 338 refuted. 0 times theorem prover too weak. 158 trivial. 413 not checked. [2024-10-14 17:56:36,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:56:36,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305049216] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:56:36,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 17:56:36,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 30] total 52 [2024-10-14 17:56:36,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350631919] [2024-10-14 17:56:36,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 17:56:36,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-14 17:56:36,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:56:36,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-14 17:56:36,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2582, Unknown=10, NotChecked=206, Total=2970 [2024-10-14 17:56:36,624 INFO L87 Difference]: Start difference. First operand 162 states and 177 transitions. Second operand has 53 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 49 states have internal predecessors, (90), 4 states have call successors, (12), 3 states have call predecessors, (12), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-14 17:56:40,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 17:56:44,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 17:56:49,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 17:56:53,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 17:56:57,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 17:57:01,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-14 17:57:06,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]