./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_remove_all.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/list-simple/sll2n_remove_all.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 bae9bfc842bb010963d083e19e9498cfd3af182f91f0b8fa56907786a4d462dd --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 18:16:34,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 18:16:34,457 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 18:16:34,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 18:16:34,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 18:16:34,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 18:16:34,499 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 18:16:34,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 18:16:34,500 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 18:16:34,501 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 18:16:34,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 18:16:34,502 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 18:16:34,503 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 18:16:34,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 18:16:34,505 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 18:16:34,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 18:16:34,506 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 18:16:34,506 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 18:16:34,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 18:16:34,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 18:16:34,507 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 18:16:34,507 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 18:16:34,511 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 18:16:34,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 18:16:34,511 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 18:16:34,512 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 18:16:34,512 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 18:16:34,512 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 18:16:34,512 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 18:16:34,513 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 18:16:34,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 18:16:34,513 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 18:16:34,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 18:16:34,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 18:16:34,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 18:16:34,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 18:16:34,514 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 18:16:34,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 18:16:34,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 18:16:34,515 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 18:16:34,515 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 18:16:34,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 18:16:34,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bae9bfc842bb010963d083e19e9498cfd3af182f91f0b8fa56907786a4d462dd [2024-10-14 18:16:34,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 18:16:34,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 18:16:34,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 18:16:34,826 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 18:16:34,827 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 18:16:34,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_remove_all.i [2024-10-14 18:16:36,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 18:16:36,675 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 18:16:36,676 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_remove_all.i [2024-10-14 18:16:36,690 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b9b8541/9337bf93b5f9474b88dabf38366bb5a9/FLAGe960d4939 [2024-10-14 18:16:36,717 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b9b8541/9337bf93b5f9474b88dabf38366bb5a9 [2024-10-14 18:16:36,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 18:16:36,722 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 18:16:36,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 18:16:36,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 18:16:36,733 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 18:16:36,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:16:36" (1/1) ... [2024-10-14 18:16:36,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50fc3c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:36, skipping insertion in model container [2024-10-14 18:16:36,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:16:36" (1/1) ... [2024-10-14 18:16:36,784 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 18:16:37,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 18:16:37,175 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 18:16:37,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 18:16:37,345 INFO L204 MainTranslator]: Completed translation [2024-10-14 18:16:37,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:37 WrapperNode [2024-10-14 18:16:37,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 18:16:37,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 18:16:37,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 18:16:37,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 18:16:37,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:37" (1/1) ... [2024-10-14 18:16:37,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:37" (1/1) ... [2024-10-14 18:16:37,400 INFO L138 Inliner]: procedures = 126, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 88 [2024-10-14 18:16:37,401 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 18:16:37,401 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 18:16:37,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 18:16:37,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 18:16:37,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:37" (1/1) ... [2024-10-14 18:16:37,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:37" (1/1) ... [2024-10-14 18:16:37,419 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:37" (1/1) ... [2024-10-14 18:16:37,439 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 4, 5]. 45 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 4 writes are split as follows [0, 3, 1]. [2024-10-14 18:16:37,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:37" (1/1) ... [2024-10-14 18:16:37,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:37" (1/1) ... [2024-10-14 18:16:37,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:37" (1/1) ... [2024-10-14 18:16:37,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:37" (1/1) ... [2024-10-14 18:16:37,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:37" (1/1) ... [2024-10-14 18:16:37,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:37" (1/1) ... [2024-10-14 18:16:37,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 18:16:37,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 18:16:37,478 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 18:16:37,478 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 18:16:37,479 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:37" (1/1) ... [2024-10-14 18:16:37,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 18:16:37,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:16:37,526 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 18:16:37,531 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 18:16:37,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 18:16:37,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 18:16:37,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 18:16:37,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 18:16:37,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 18:16:37,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 18:16:37,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 18:16:37,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 18:16:37,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-14 18:16:37,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 18:16:37,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 18:16:37,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-14 18:16:37,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 18:16:37,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-14 18:16:37,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-14 18:16:37,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-14 18:16:37,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 18:16:37,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 18:16:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 18:16:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 18:16:37,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 18:16:37,760 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 18:16:37,763 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 18:16:38,069 INFO L? ?]: Removed 63 outVars from TransFormulas that were not future-live. [2024-10-14 18:16:38,073 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 18:16:38,132 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 18:16:38,132 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 18:16:38,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:16:38 BoogieIcfgContainer [2024-10-14 18:16:38,133 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 18:16:38,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 18:16:38,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 18:16:38,143 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 18:16:38,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:16:36" (1/3) ... [2024-10-14 18:16:38,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65500473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:16:38, skipping insertion in model container [2024-10-14 18:16:38,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:16:37" (2/3) ... [2024-10-14 18:16:38,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65500473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:16:38, skipping insertion in model container [2024-10-14 18:16:38,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:16:38" (3/3) ... [2024-10-14 18:16:38,148 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2024-10-14 18:16:38,173 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 18:16:38,174 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-10-14 18:16:38,226 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 18:16:38,236 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;@487b355f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 18:16:38,236 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-14 18:16:38,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 22 states have (on average 2.272727272727273) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:16:38,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-14 18:16:38,248 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:16:38,249 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-14 18:16:38,249 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:16:38,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:16:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash 3882955, now seen corresponding path program 1 times [2024-10-14 18:16:38,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:16:38,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910971538] [2024-10-14 18:16:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:16:38,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:16:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:16:38,512 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 18:16:38,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:16:38,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910971538] [2024-10-14 18:16:38,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910971538] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:16:38,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:16:38,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 18:16:38,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492619676] [2024-10-14 18:16:38,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:16:38,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 18:16:38,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:16:38,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 18:16:38,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 18:16:38,552 INFO L87 Difference]: Start difference. First operand has 44 states, 22 states have (on average 2.272727272727273) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:16:38,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:16:38,727 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2024-10-14 18:16:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 18:16:38,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-10-14 18:16:38,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:16:38,737 INFO L225 Difference]: With dead ends: 41 [2024-10-14 18:16:38,738 INFO L226 Difference]: Without dead ends: 39 [2024-10-14 18:16:38,740 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 18:16:38,743 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:16:38,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:16:38,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-14 18:16:38,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-10-14 18:16:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 20 states have (on average 2.0) internal successors, (40), 38 states have internal predecessors, (40), 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 18:16:38,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-10-14 18:16:38,787 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 4 [2024-10-14 18:16:38,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:16:38,788 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-10-14 18:16:38,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:16:38,788 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-10-14 18:16:38,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-14 18:16:38,789 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:16:38,789 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-14 18:16:38,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 18:16:38,789 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:16:38,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:16:38,790 INFO L85 PathProgramCache]: Analyzing trace with hash 3882956, now seen corresponding path program 1 times [2024-10-14 18:16:38,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:16:38,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913267677] [2024-10-14 18:16:38,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:16:38,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:16:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:16:38,894 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 18:16:38,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:16:38,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913267677] [2024-10-14 18:16:38,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913267677] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:16:38,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:16:38,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 18:16:38,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485058036] [2024-10-14 18:16:38,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:16:38,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 18:16:38,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:16:38,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 18:16:38,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 18:16:38,898 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:16:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:16:38,937 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-10-14 18:16:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 18:16:38,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-10-14 18:16:38,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:16:38,938 INFO L225 Difference]: With dead ends: 37 [2024-10-14 18:16:38,938 INFO L226 Difference]: Without dead ends: 37 [2024-10-14 18:16:38,939 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 18:16:38,940 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:16:38,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 48 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 18:16:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-14 18:16:38,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-10-14 18:16:38,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.9) internal successors, (38), 36 states have internal predecessors, (38), 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 18:16:38,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2024-10-14 18:16:38,951 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 4 [2024-10-14 18:16:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:16:38,951 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2024-10-14 18:16:38,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:16:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2024-10-14 18:16:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-14 18:16:38,952 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:16:38,952 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 18:16:38,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 18:16:38,953 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:16:38,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:16:38,953 INFO L85 PathProgramCache]: Analyzing trace with hash 120396479, now seen corresponding path program 1 times [2024-10-14 18:16:38,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:16:38,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747167938] [2024-10-14 18:16:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:16:38,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:16:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:16:39,032 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 18:16:39,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:16:39,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747167938] [2024-10-14 18:16:39,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747167938] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:16:39,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:16:39,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 18:16:39,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259752989] [2024-10-14 18:16:39,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:16:39,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 18:16:39,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:16:39,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 18:16:39,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 18:16:39,036 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 18:16:39,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:16:39,074 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2024-10-14 18:16:39,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 18:16:39,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2024-10-14 18:16:39,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:16:39,076 INFO L225 Difference]: With dead ends: 44 [2024-10-14 18:16:39,076 INFO L226 Difference]: Without dead ends: 44 [2024-10-14 18:16:39,076 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 18:16:39,077 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:16:39,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 18:16:39,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-14 18:16:39,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2024-10-14 18:16:39,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 37 states have internal predecessors, (39), 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 18:16:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2024-10-14 18:16:39,085 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 5 [2024-10-14 18:16:39,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:16:39,085 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2024-10-14 18:16:39,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 18:16:39,085 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2024-10-14 18:16:39,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-14 18:16:39,086 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:16:39,086 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 18:16:39,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 18:16:39,086 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:16:39,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:16:39,087 INFO L85 PathProgramCache]: Analyzing trace with hash -563445157, now seen corresponding path program 1 times [2024-10-14 18:16:39,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:16:39,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676043570] [2024-10-14 18:16:39,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:16:39,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:16:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:16:39,151 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 18:16:39,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:16:39,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676043570] [2024-10-14 18:16:39,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676043570] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:16:39,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:16:39,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 18:16:39,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262505340] [2024-10-14 18:16:39,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:16:39,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 18:16:39,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:16:39,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 18:16:39,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 18:16:39,154 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:16:39,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:16:39,209 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-10-14 18:16:39,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 18:16:39,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-14 18:16:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:16:39,211 INFO L225 Difference]: With dead ends: 37 [2024-10-14 18:16:39,211 INFO L226 Difference]: Without dead ends: 37 [2024-10-14 18:16:39,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 18:16:39,212 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:16:39,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 55 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 18:16:39,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-14 18:16:39,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-10-14 18:16:39,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 36 states have internal predecessors, (38), 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 18:16:39,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2024-10-14 18:16:39,217 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 6 [2024-10-14 18:16:39,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:16:39,217 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2024-10-14 18:16:39,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:16:39,217 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2024-10-14 18:16:39,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-14 18:16:39,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:16:39,218 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 18:16:39,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 18:16:39,218 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:16:39,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:16:39,219 INFO L85 PathProgramCache]: Analyzing trace with hash -563445156, now seen corresponding path program 1 times [2024-10-14 18:16:39,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:16:39,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393321122] [2024-10-14 18:16:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:16:39,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:16:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:16:39,397 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 18:16:39,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:16:39,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393321122] [2024-10-14 18:16:39,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393321122] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:16:39,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:16:39,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 18:16:39,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660097016] [2024-10-14 18:16:39,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:16:39,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 18:16:39,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:16:39,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 18:16:39,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 18:16:39,401 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:16:39,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:16:39,455 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2024-10-14 18:16:39,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 18:16:39,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-14 18:16:39,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:16:39,457 INFO L225 Difference]: With dead ends: 36 [2024-10-14 18:16:39,457 INFO L226 Difference]: Without dead ends: 36 [2024-10-14 18:16:39,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 18:16:39,460 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:16:39,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 18:16:39,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-10-14 18:16:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-10-14 18:16:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 35 states have internal predecessors, (37), 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 18:16:39,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-10-14 18:16:39,469 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 6 [2024-10-14 18:16:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:16:39,472 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-10-14 18:16:39,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:16:39,473 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-10-14 18:16:39,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-14 18:16:39,474 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:16:39,474 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:16:39,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 18:16:39,475 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:16:39,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:16:39,476 INFO L85 PathProgramCache]: Analyzing trace with hash -895608347, now seen corresponding path program 1 times [2024-10-14 18:16:39,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:16:39,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743143730] [2024-10-14 18:16:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:16:39,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:16:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:16:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:16:39,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:16:39,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743143730] [2024-10-14 18:16:39,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743143730] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:16:39,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097686644] [2024-10-14 18:16:39,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:16:39,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:16:39,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:16:39,605 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 18:16:39,620 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 18:16:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:16:39,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 18:16:39,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:16:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:16:39,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:16:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:16:39,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097686644] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:16:39,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:16:39,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-10-14 18:16:39,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299391183] [2024-10-14 18:16:39,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:16:39,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:16:39,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:16:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:16:39,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:16:39,819 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:16:39,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:16:39,880 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2024-10-14 18:16:39,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 18:16:39,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-14 18:16:39,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:16:39,881 INFO L225 Difference]: With dead ends: 41 [2024-10-14 18:16:39,881 INFO L226 Difference]: Without dead ends: 41 [2024-10-14 18:16:39,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:16:39,883 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:16:39,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 57 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:16:39,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-14 18:16:39,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-10-14 18:16:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:16:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2024-10-14 18:16:39,892 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 10 [2024-10-14 18:16:39,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:16:39,892 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2024-10-14 18:16:39,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:16:39,893 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2024-10-14 18:16:39,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-14 18:16:39,893 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:16:39,893 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-14 18:16:39,912 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 18:16:40,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-14 18:16:40,099 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:16:40,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:16:40,100 INFO L85 PathProgramCache]: Analyzing trace with hash 298623615, now seen corresponding path program 2 times [2024-10-14 18:16:40,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:16:40,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290823358] [2024-10-14 18:16:40,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:16:40,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:16:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:16:40,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 18:16:40,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:16:40,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290823358] [2024-10-14 18:16:40,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290823358] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:16:40,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:16:40,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 18:16:40,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451202026] [2024-10-14 18:16:40,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:16:40,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 18:16:40,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:16:40,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 18:16:40,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 18:16:40,228 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 18:16:40,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:16:40,262 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2024-10-14 18:16:40,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 18:16:40,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 15 [2024-10-14 18:16:40,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:16:40,267 INFO L225 Difference]: With dead ends: 60 [2024-10-14 18:16:40,267 INFO L226 Difference]: Without dead ends: 60 [2024-10-14 18:16:40,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 18:16:40,268 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:16:40,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 79 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 18:16:40,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-14 18:16:40,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 42. [2024-10-14 18:16:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:16:40,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-10-14 18:16:40,276 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 15 [2024-10-14 18:16:40,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:16:40,278 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-10-14 18:16:40,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 18:16:40,279 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-10-14 18:16:40,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-14 18:16:40,279 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:16:40,280 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-14 18:16:40,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 18:16:40,280 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:16:40,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:16:40,280 INFO L85 PathProgramCache]: Analyzing trace with hash 298623651, now seen corresponding path program 1 times [2024-10-14 18:16:40,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:16:40,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614782741] [2024-10-14 18:16:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:16:40,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:16:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:16:40,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 18:16:40,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:16:40,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614782741] [2024-10-14 18:16:40,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614782741] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:16:40,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256021306] [2024-10-14 18:16:40,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:16:40,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:16:40,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:16:40,566 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 18:16:40,568 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 18:16:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:16:40,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 18:16:40,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:16:40,729 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 18:16:40,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:16:40,773 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 18:16:40,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:16:40,810 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 18:16:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 18:16:40,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:16:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 18:16:40,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256021306] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:16:40,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:16:40,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 7 [2024-10-14 18:16:40,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046108103] [2024-10-14 18:16:40,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:16:40,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 18:16:40,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:16:40,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 18:16:40,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-14 18:16:40,976 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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 18:16:41,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:16:41,119 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2024-10-14 18:16:41,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 18:16:41,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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 15 [2024-10-14 18:16:41,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:16:41,121 INFO L225 Difference]: With dead ends: 54 [2024-10-14 18:16:41,121 INFO L226 Difference]: Without dead ends: 54 [2024-10-14 18:16:41,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-10-14 18:16:41,122 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 65 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:16:41,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 51 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:16:41,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-14 18:16:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2024-10-14 18:16:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 41 states have internal predecessors, (44), 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 18:16:41,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-10-14 18:16:41,127 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 15 [2024-10-14 18:16:41,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:16:41,127 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-10-14 18:16:41,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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 18:16:41,127 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-10-14 18:16:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-14 18:16:41,128 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:16:41,128 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-14 18:16:41,153 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 18:16:41,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-14 18:16:41,333 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:16:41,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:16:41,333 INFO L85 PathProgramCache]: Analyzing trace with hash 298623652, now seen corresponding path program 1 times [2024-10-14 18:16:41,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:16:41,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498922147] [2024-10-14 18:16:41,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:16:41,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:16:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:16:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:16:41,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:16:41,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498922147] [2024-10-14 18:16:41,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498922147] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:16:41,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684364550] [2024-10-14 18:16:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:16:41,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:16:41,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:16:41,695 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 18:16:41,697 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 18:16:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:16:41,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 18:16:41,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:16:41,824 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 18:16:41,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:16:41,853 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 18:16:41,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:16:41,895 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 18:16:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 18:16:41,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:17:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:06,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684364550] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:17:06,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:17:06,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 13 [2024-10-14 18:17:06,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333013506] [2024-10-14 18:17:06,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:17:06,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 18:17:06,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 18:17:06,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=141, Unknown=6, NotChecked=0, Total=210 [2024-10-14 18:17:06,260 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:06,390 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2024-10-14 18:17:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 18:17:06,391 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-14 18:17:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:06,391 INFO L225 Difference]: With dead ends: 48 [2024-10-14 18:17:06,391 INFO L226 Difference]: Without dead ends: 48 [2024-10-14 18:17:06,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=101, Invalid=199, Unknown=6, NotChecked=0, Total=306 [2024-10-14 18:17:06,392 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 142 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:06,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 43 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:17:06,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-14 18:17:06,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2024-10-14 18:17:06,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 37 states have internal predecessors, (39), 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 18:17:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2024-10-14 18:17:06,400 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 15 [2024-10-14 18:17:06,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:06,401 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2024-10-14 18:17:06,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:06,401 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2024-10-14 18:17:06,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-14 18:17:06,403 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:06,403 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:06,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 18:17:06,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:06,608 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:06,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:06,608 INFO L85 PathProgramCache]: Analyzing trace with hash 667398609, now seen corresponding path program 1 times [2024-10-14 18:17:06,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:06,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686908799] [2024-10-14 18:17:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:06,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 18:17:06,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:06,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686908799] [2024-10-14 18:17:06,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686908799] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:17:06,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:17:06,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 18:17:06,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651778864] [2024-10-14 18:17:06,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:17:06,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 18:17:06,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:06,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 18:17:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 18:17:06,732 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:06,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:06,858 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2024-10-14 18:17:06,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 18:17:06,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-14 18:17:06,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:06,859 INFO L225 Difference]: With dead ends: 47 [2024-10-14 18:17:06,859 INFO L226 Difference]: Without dead ends: 47 [2024-10-14 18:17:06,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 18:17:06,860 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 22 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:06,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 59 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:17:06,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-14 18:17:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2024-10-14 18:17:06,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 38 states have internal predecessors, (41), 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 18:17:06,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-10-14 18:17:06,864 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 16 [2024-10-14 18:17:06,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:06,864 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-10-14 18:17:06,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:06,864 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-10-14 18:17:06,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-14 18:17:06,865 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:06,865 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:06,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 18:17:06,865 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:06,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:06,866 INFO L85 PathProgramCache]: Analyzing trace with hash 667398610, now seen corresponding path program 1 times [2024-10-14 18:17:06,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:06,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667514541] [2024-10-14 18:17:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:06,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 18:17:07,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:07,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667514541] [2024-10-14 18:17:07,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667514541] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:17:07,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:17:07,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 18:17:07,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435124599] [2024-10-14 18:17:07,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:17:07,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 18:17:07,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:07,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 18:17:07,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-14 18:17:07,123 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:07,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:07,292 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2024-10-14 18:17:07,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 18:17:07,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-14 18:17:07,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:07,293 INFO L225 Difference]: With dead ends: 48 [2024-10-14 18:17:07,293 INFO L226 Difference]: Without dead ends: 48 [2024-10-14 18:17:07,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-14 18:17:07,294 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:07,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 104 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:17:07,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-14 18:17:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2024-10-14 18:17:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 38 states have internal predecessors, (40), 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 18:17:07,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-10-14 18:17:07,297 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 16 [2024-10-14 18:17:07,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:07,298 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-10-14 18:17:07,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:07,298 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-10-14 18:17:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-14 18:17:07,298 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:07,298 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:07,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 18:17:07,299 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:07,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:07,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1419982082, now seen corresponding path program 1 times [2024-10-14 18:17:07,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:07,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127160589] [2024-10-14 18:17:07,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:07,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 18:17:07,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:07,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127160589] [2024-10-14 18:17:07,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127160589] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:17:07,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:17:07,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 18:17:07,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126922487] [2024-10-14 18:17:07,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:17:07,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 18:17:07,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:07,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 18:17:07,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-14 18:17:07,441 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:07,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:07,531 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2024-10-14 18:17:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 18:17:07,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-10-14 18:17:07,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:07,532 INFO L225 Difference]: With dead ends: 47 [2024-10-14 18:17:07,532 INFO L226 Difference]: Without dead ends: 47 [2024-10-14 18:17:07,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-14 18:17:07,533 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:07,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 112 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:17:07,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-14 18:17:07,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2024-10-14 18:17:07,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:07,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2024-10-14 18:17:07,539 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 18 [2024-10-14 18:17:07,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:07,539 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2024-10-14 18:17:07,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:07,540 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2024-10-14 18:17:07,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 18:17:07,540 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:07,541 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:07,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 18:17:07,541 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:07,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:07,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1069771672, now seen corresponding path program 1 times [2024-10-14 18:17:07,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:07,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863053973] [2024-10-14 18:17:07,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:07,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 18:17:07,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:07,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863053973] [2024-10-14 18:17:07,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863053973] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:17:07,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:17:07,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 18:17:07,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418638590] [2024-10-14 18:17:07,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:17:07,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 18:17:07,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 18:17:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-14 18:17:07,765 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 18:17:07,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:07,880 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-10-14 18:17:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 18:17:07,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 19 [2024-10-14 18:17:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:07,881 INFO L225 Difference]: With dead ends: 46 [2024-10-14 18:17:07,881 INFO L226 Difference]: Without dead ends: 46 [2024-10-14 18:17:07,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-14 18:17:07,882 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:07,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 87 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:17:07,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-14 18:17:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2024-10-14 18:17:07,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.34375) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:07,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-10-14 18:17:07,888 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 19 [2024-10-14 18:17:07,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:07,888 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-10-14 18:17:07,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 18:17:07,889 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-10-14 18:17:07,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-14 18:17:07,889 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:07,889 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:07,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 18:17:07,889 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:07,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1196816444, now seen corresponding path program 1 times [2024-10-14 18:17:07,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:07,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400082347] [2024-10-14 18:17:07,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:07,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 18:17:07,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:07,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400082347] [2024-10-14 18:17:07,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400082347] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:17:07,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:17:07,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 18:17:07,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780968321] [2024-10-14 18:17:07,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:17:07,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:17:07,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:07,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:17:07,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:17:07,963 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 18:17:08,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:08,015 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2024-10-14 18:17:08,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 18:17:08,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-10-14 18:17:08,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:08,016 INFO L225 Difference]: With dead ends: 41 [2024-10-14 18:17:08,016 INFO L226 Difference]: Without dead ends: 41 [2024-10-14 18:17:08,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 18:17:08,017 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:08,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 18:17:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-14 18:17:08,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-10-14 18:17:08,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.3125) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:08,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2024-10-14 18:17:08,020 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 20 [2024-10-14 18:17:08,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:08,021 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2024-10-14 18:17:08,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 18:17:08,021 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2024-10-14 18:17:08,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-14 18:17:08,022 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:08,022 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:08,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 18:17:08,022 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:08,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:08,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1553395995, now seen corresponding path program 1 times [2024-10-14 18:17:08,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:08,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028007091] [2024-10-14 18:17:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:08,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 18:17:08,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:08,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028007091] [2024-10-14 18:17:08,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028007091] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:17:08,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478476183] [2024-10-14 18:17:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:08,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:08,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:17:08,261 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 18:17:08,262 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 18:17:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:08,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 18:17:08,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:17:08,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:17:08,484 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 18:17:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 18:17:08,489 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 18:17:08,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478476183] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:17:08,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 18:17:08,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-10-14 18:17:08,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041444617] [2024-10-14 18:17:08,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:17:08,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 18:17:08,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:08,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 18:17:08,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-10-14 18:17:08,491 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:08,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:08,574 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-10-14 18:17:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 18:17:08,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-14 18:17:08,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:08,576 INFO L225 Difference]: With dead ends: 40 [2024-10-14 18:17:08,576 INFO L226 Difference]: Without dead ends: 40 [2024-10-14 18:17:08,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-10-14 18:17:08,577 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:08,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 31 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 18:17:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-10-14 18:17:08,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-10-14 18:17:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.28125) internal successors, (41), 39 states have internal predecessors, (41), 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 18:17:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-10-14 18:17:08,584 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 21 [2024-10-14 18:17:08,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:08,585 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-10-14 18:17:08,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:08,585 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-10-14 18:17:08,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-14 18:17:08,585 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:08,585 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:08,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 18:17:08,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 18:17:08,786 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:08,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:08,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1835027935, now seen corresponding path program 1 times [2024-10-14 18:17:08,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:08,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864060230] [2024-10-14 18:17:08,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:08,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 18:17:08,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:08,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864060230] [2024-10-14 18:17:08,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864060230] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:17:08,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082724010] [2024-10-14 18:17:08,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:08,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:08,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:17:08,890 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 18:17:08,891 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 18:17:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:09,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 18:17:09,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:17:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 18:17:09,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:17:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 18:17:09,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082724010] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:17:09,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:17:09,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-10-14 18:17:09,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169839456] [2024-10-14 18:17:09,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:17:09,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 18:17:09,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:09,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 18:17:09,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 18:17:09,094 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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 18:17:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:09,125 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-10-14 18:17:09,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 18:17:09,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-10-14 18:17:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:09,126 INFO L225 Difference]: With dead ends: 43 [2024-10-14 18:17:09,126 INFO L226 Difference]: Without dead ends: 43 [2024-10-14 18:17:09,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 18:17:09,127 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:09,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 105 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 18:17:09,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-14 18:17:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-10-14 18:17:09,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 42 states have internal predecessors, (44), 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 18:17:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2024-10-14 18:17:09,131 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 23 [2024-10-14 18:17:09,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:09,131 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2024-10-14 18:17:09,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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 18:17:09,131 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2024-10-14 18:17:09,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-14 18:17:09,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:09,132 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:09,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 18:17:09,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 18:17:09,333 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:09,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:09,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1835027899, now seen corresponding path program 1 times [2024-10-14 18:17:09,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:09,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815747] [2024-10-14 18:17:09,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:09,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 18:17:09,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:09,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815747] [2024-10-14 18:17:09,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815747] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:17:09,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196196068] [2024-10-14 18:17:09,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:09,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:09,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:17:09,416 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 18:17:09,418 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 18:17:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:09,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 18:17:09,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:17:09,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 18:17:09,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:17:09,590 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-14 18:17:09,590 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 18:17:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 18:17:09,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196196068] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:17:09,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:17:09,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-10-14 18:17:09,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944431859] [2024-10-14 18:17:09,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:17:09,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:17:09,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:09,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:17:09,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:17:09,609 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:09,666 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2024-10-14 18:17:09,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 18:17:09,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-10-14 18:17:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:09,667 INFO L225 Difference]: With dead ends: 41 [2024-10-14 18:17:09,667 INFO L226 Difference]: Without dead ends: 41 [2024-10-14 18:17:09,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 18:17:09,668 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:09,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 22 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 18:17:09,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-14 18:17:09,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-10-14 18:17:09,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.2) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:09,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2024-10-14 18:17:09,670 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 23 [2024-10-14 18:17:09,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:09,670 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2024-10-14 18:17:09,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:09,670 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2024-10-14 18:17:09,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-14 18:17:09,671 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:09,671 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:09,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 18:17:09,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 18:17:09,876 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:09,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:09,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1051290001, now seen corresponding path program 1 times [2024-10-14 18:17:09,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:09,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165988275] [2024-10-14 18:17:09,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:09,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:10,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:10,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:10,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165988275] [2024-10-14 18:17:10,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165988275] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:17:10,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912342289] [2024-10-14 18:17:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:10,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:10,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:17:10,595 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 18:17:10,596 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 18:17:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:10,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-10-14 18:17:10,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:17:10,788 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-14 18:17:10,789 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 18:17:10,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 18:17:10,904 INFO L349 Elim1Store]: treesize reduction 12, result has 50.0 percent of original size [2024-10-14 18:17:10,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 28 [2024-10-14 18:17:10,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 34 [2024-10-14 18:17:11,115 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-10-14 18:17:11,115 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 30 treesize of output 17 [2024-10-14 18:17:11,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 8 [2024-10-14 18:17:11,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-14 18:17:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:11,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:17:11,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-10-14 18:17:11,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2024-10-14 18:17:11,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-10-14 18:17:11,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2024-10-14 18:17:11,530 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-14 18:17:11,530 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 23 treesize of output 1 [2024-10-14 18:17:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:11,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912342289] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:17:11,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:17:11,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 27 [2024-10-14 18:17:11,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708025677] [2024-10-14 18:17:11,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:17:11,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-14 18:17:11,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:11,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-14 18:17:11,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2024-10-14 18:17:11,533 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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 18:17:12,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:12,190 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2024-10-14 18:17:12,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 18:17:12,190 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-10-14 18:17:12,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:12,191 INFO L225 Difference]: With dead ends: 54 [2024-10-14 18:17:12,192 INFO L226 Difference]: Without dead ends: 54 [2024-10-14 18:17:12,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=1341, Unknown=0, NotChecked=0, Total=1560 [2024-10-14 18:17:12,193 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 44 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:12,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 132 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 18:17:12,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-14 18:17:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2024-10-14 18:17:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 42 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:12,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2024-10-14 18:17:12,199 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 24 [2024-10-14 18:17:12,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:12,199 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2024-10-14 18:17:12,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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 18:17:12,200 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2024-10-14 18:17:12,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-14 18:17:12,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:12,200 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:12,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 18:17:12,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:12,401 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:12,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:12,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1051290000, now seen corresponding path program 1 times [2024-10-14 18:17:12,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:12,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065501063] [2024-10-14 18:17:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:12,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:13,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:13,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065501063] [2024-10-14 18:17:13,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065501063] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:17:13,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934781050] [2024-10-14 18:17:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:13,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:13,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:17:13,672 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 18:17:13,673 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 18:17:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:13,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-10-14 18:17:13,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:17:13,857 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 18:17:13,981 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-14 18:17:13,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-10-14 18:17:13,998 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 18:17:13,998 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 18:17:14,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 18:17:14,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 18:17:14,401 INFO L349 Elim1Store]: treesize reduction 12, result has 50.0 percent of original size [2024-10-14 18:17:14,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 29 [2024-10-14 18:17:14,424 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 18:17:14,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:17:14,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 19 [2024-10-14 18:17:14,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 18:17:14,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 8 [2024-10-14 18:17:14,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-14 18:17:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:14,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:17:15,271 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:17:15,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 133 [2024-10-14 18:17:15,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2024-10-14 18:17:15,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-10-14 18:17:15,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-10-14 18:17:15,476 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 40 treesize of output 38 [2024-10-14 18:17:15,481 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 18:17:15,484 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 9 treesize of output 7 [2024-10-14 18:17:15,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:17:15,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 55 [2024-10-14 18:17:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:15,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934781050] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:17:15,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:17:15,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 48 [2024-10-14 18:17:15,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841812823] [2024-10-14 18:17:15,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:17:15,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-14 18:17:15,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:15,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-14 18:17:15,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2187, Unknown=0, NotChecked=0, Total=2352 [2024-10-14 18:17:15,854 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 49 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 49 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:17,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:17,301 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2024-10-14 18:17:17,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 18:17:17,302 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 49 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-10-14 18:17:17,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:17,302 INFO L225 Difference]: With dead ends: 54 [2024-10-14 18:17:17,302 INFO L226 Difference]: Without dead ends: 54 [2024-10-14 18:17:17,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=443, Invalid=3847, Unknown=0, NotChecked=0, Total=4290 [2024-10-14 18:17:17,304 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 100 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:17,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 277 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 18:17:17,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-14 18:17:17,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2024-10-14 18:17:17,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 42 states have internal predecessors, (44), 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 18:17:17,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2024-10-14 18:17:17,306 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 24 [2024-10-14 18:17:17,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:17,307 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2024-10-14 18:17:17,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 49 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:17,307 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2024-10-14 18:17:17,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-14 18:17:17,307 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:17,307 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:17,330 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 18:17:17,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:17,512 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:17,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:17,512 INFO L85 PathProgramCache]: Analyzing trace with hash -972330464, now seen corresponding path program 1 times [2024-10-14 18:17:17,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:17,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39341931] [2024-10-14 18:17:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:17,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:18,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:18,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39341931] [2024-10-14 18:17:18,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39341931] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:17:18,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926825461] [2024-10-14 18:17:18,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:18,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:18,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:17:18,090 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 18:17:18,092 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 18:17:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:18,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-10-14 18:17:18,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:17:18,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 18:17:18,327 INFO L349 Elim1Store]: treesize reduction 12, result has 50.0 percent of original size [2024-10-14 18:17:18,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 19 [2024-10-14 18:17:18,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 18:17:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:18,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:17:18,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:17:18,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 47 [2024-10-14 18:17:18,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-10-14 18:17:18,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2024-10-14 18:17:18,623 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 18 treesize of output 16 [2024-10-14 18:17:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:18,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926825461] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:17:18,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:17:18,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2024-10-14 18:17:18,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962009091] [2024-10-14 18:17:18,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:17:18,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 18:17:18,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:18,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 18:17:18,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2024-10-14 18:17:18,644 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 25 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 25 states have internal predecessors, (40), 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 18:17:18,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:18,929 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-10-14 18:17:18,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 18:17:18,929 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 25 states have internal predecessors, (40), 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 26 [2024-10-14 18:17:18,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:18,930 INFO L225 Difference]: With dead ends: 49 [2024-10-14 18:17:18,930 INFO L226 Difference]: Without dead ends: 49 [2024-10-14 18:17:18,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=1016, Unknown=0, NotChecked=0, Total=1190 [2024-10-14 18:17:18,931 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 26 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:18,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 222 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 18:17:18,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-14 18:17:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-10-14 18:17:18,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-10-14 18:17:18,933 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 26 [2024-10-14 18:17:18,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:18,934 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-10-14 18:17:18,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 25 states have internal predecessors, (40), 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 18:17:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-10-14 18:17:18,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 18:17:18,934 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:18,935 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:18,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 18:17:19,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:19,139 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:19,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:19,139 INFO L85 PathProgramCache]: Analyzing trace with hash -77473222, now seen corresponding path program 1 times [2024-10-14 18:17:19,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:19,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580181906] [2024-10-14 18:17:19,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:19,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:19,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:19,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580181906] [2024-10-14 18:17:19,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580181906] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:17:19,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194212526] [2024-10-14 18:17:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:19,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:19,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:17:19,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:17:19,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 18:17:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:20,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-14 18:17:20,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:17:20,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 18:17:20,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:17:20,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 21 [2024-10-14 18:17:20,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-10-14 18:17:20,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 18:17:20,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-14 18:17:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:20,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:17:20,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-10-14 18:17:20,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-10-14 18:17:20,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2024-10-14 18:17:20,539 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 18 treesize of output 16 [2024-10-14 18:17:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:20,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194212526] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:17:20,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:17:20,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2024-10-14 18:17:20,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899024738] [2024-10-14 18:17:20,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:17:20,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 18:17:20,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:20,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 18:17:20,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-10-14 18:17:20,566 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 25 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 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 18:17:21,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:21,020 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2024-10-14 18:17:21,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 18:17:21,020 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 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 27 [2024-10-14 18:17:21,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:21,021 INFO L225 Difference]: With dead ends: 48 [2024-10-14 18:17:21,021 INFO L226 Difference]: Without dead ends: 48 [2024-10-14 18:17:21,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 10 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=205, Invalid=1201, Unknown=0, NotChecked=0, Total=1406 [2024-10-14 18:17:21,022 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:21,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 151 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 18:17:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-14 18:17:21,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2024-10-14 18:17:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.175) internal successors, (47), 45 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:21,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2024-10-14 18:17:21,023 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 27 [2024-10-14 18:17:21,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:21,024 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2024-10-14 18:17:21,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 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 18:17:21,024 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2024-10-14 18:17:21,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-14 18:17:21,025 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:21,025 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-10-14 18:17:21,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 18:17:21,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-14 18:17:21,226 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:21,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:21,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1644035341, now seen corresponding path program 2 times [2024-10-14 18:17:21,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:21,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386322174] [2024-10-14 18:17:21,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:21,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 18:17:21,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:21,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386322174] [2024-10-14 18:17:21,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386322174] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:17:21,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851360555] [2024-10-14 18:17:21,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 18:17:21,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:21,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:17:21,350 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:17:21,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 18:17:21,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 18:17:21,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 18:17:21,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 18:17:21,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:17:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 18:17:21,592 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 18:17:21,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851360555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:17:21,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 18:17:21,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-14 18:17:21,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483748412] [2024-10-14 18:17:21,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:17:21,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 18:17:21,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:21,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 18:17:21,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 18:17:21,594 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 18:17:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:21,626 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2024-10-14 18:17:21,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 18:17:21,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 32 [2024-10-14 18:17:21,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:21,629 INFO L225 Difference]: With dead ends: 37 [2024-10-14 18:17:21,629 INFO L226 Difference]: Without dead ends: 37 [2024-10-14 18:17:21,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 18:17:21,629 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:21,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 18:17:21,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-14 18:17:21,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-10-14 18:17:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 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 18:17:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2024-10-14 18:17:21,632 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 32 [2024-10-14 18:17:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:21,632 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2024-10-14 18:17:21,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 18:17:21,632 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2024-10-14 18:17:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-14 18:17:21,633 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:21,633 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:21,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-14 18:17:21,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-14 18:17:21,834 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:21,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:21,835 INFO L85 PathProgramCache]: Analyzing trace with hash -574545585, now seen corresponding path program 1 times [2024-10-14 18:17:21,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:21,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534120544] [2024-10-14 18:17:21,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:21,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:22,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:22,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534120544] [2024-10-14 18:17:22,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534120544] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:17:22,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442494663] [2024-10-14 18:17:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:22,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:22,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:17:22,951 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:17:22,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 18:17:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:23,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-10-14 18:17:23,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:17:23,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 18:17:24,674 INFO L349 Elim1Store]: treesize reduction 12, result has 50.0 percent of original size [2024-10-14 18:17:24,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 167 [2024-10-14 18:17:25,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 242 [2024-10-14 18:17:25,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 135 [2024-10-14 18:17:26,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 112 [2024-10-14 18:17:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:27,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:17:28,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-10-14 18:17:28,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2024-10-14 18:17:28,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-10-14 18:17:28,805 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 44 treesize of output 42 [2024-10-14 18:17:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:30,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442494663] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:17:30,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:17:30,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 21] total 60 [2024-10-14 18:17:30,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729556461] [2024-10-14 18:17:30,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:17:30,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-10-14 18:17:30,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:30,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-10-14 18:17:30,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=3586, Unknown=2, NotChecked=0, Total=3782 [2024-10-14 18:17:30,301 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 62 states, 61 states have (on average 1.540983606557377) internal successors, (94), 61 states have internal predecessors, (94), 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 18:17:36,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:36,115 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2024-10-14 18:17:36,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-14 18:17:36,116 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.540983606557377) internal successors, (94), 61 states have internal predecessors, (94), 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 33 [2024-10-14 18:17:36,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:36,116 INFO L225 Difference]: With dead ends: 66 [2024-10-14 18:17:36,116 INFO L226 Difference]: Without dead ends: 65 [2024-10-14 18:17:36,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=418, Invalid=6386, Unknown=2, NotChecked=0, Total=6806 [2024-10-14 18:17:36,118 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 42 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:36,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 184 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-14 18:17:36,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-14 18:17:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2024-10-14 18:17:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.05) internal successors, (63), 61 states have internal predecessors, (63), 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 18:17:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2024-10-14 18:17:36,121 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 33 [2024-10-14 18:17:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:36,121 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2024-10-14 18:17:36,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.540983606557377) internal successors, (94), 61 states have internal predecessors, (94), 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 18:17:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2024-10-14 18:17:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-14 18:17:36,122 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:36,122 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:36,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-14 18:17:36,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-14 18:17:36,323 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:36,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:36,324 INFO L85 PathProgramCache]: Analyzing trace with hash -631019063, now seen corresponding path program 1 times [2024-10-14 18:17:36,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:36,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059630374] [2024-10-14 18:17:36,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:36,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:38,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:38,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059630374] [2024-10-14 18:17:38,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059630374] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:17:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428888572] [2024-10-14 18:17:38,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:38,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:38,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:17:38,323 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:17:38,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 18:17:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:38,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-10-14 18:17:38,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:17:38,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 18:17:38,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 18:17:38,696 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 18:17:38,696 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 18:17:38,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 11 [2024-10-14 18:17:38,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 11 [2024-10-14 18:17:38,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 11 [2024-10-14 18:17:38,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 11 [2024-10-14 18:17:38,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 15 [2024-10-14 18:17:38,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 15 [2024-10-14 18:17:39,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 42 [2024-10-14 18:17:39,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-10-14 18:17:39,771 INFO L349 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2024-10-14 18:17:39,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 40 [2024-10-14 18:17:39,785 INFO L349 Elim1Store]: treesize reduction 12, result has 50.0 percent of original size [2024-10-14 18:17:39,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 19 [2024-10-14 18:17:40,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 18:17:40,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 18:17:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:40,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:17:40,928 INFO L349 Elim1Store]: treesize reduction 7, result has 36.4 percent of original size [2024-10-14 18:17:40,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-10-14 18:17:41,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2024-10-14 18:17:41,282 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 32 treesize of output 30 [2024-10-14 18:17:41,315 INFO L349 Elim1Store]: treesize reduction 10, result has 66.7 percent of original size [2024-10-14 18:17:41,315 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 49 [2024-10-14 18:17:41,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:17:41,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 109 [2024-10-14 18:17:41,767 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:17:41,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 79 [2024-10-14 18:17:41,793 INFO L349 Elim1Store]: treesize reduction 11, result has 60.7 percent of original size [2024-10-14 18:17:41,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 110 [2024-10-14 18:17:41,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:17:41,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 136 [2024-10-14 18:17:41,857 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 83 treesize of output 79 [2024-10-14 18:17:41,864 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 79 treesize of output 77 [2024-10-14 18:17:41,878 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:17:41,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 97 [2024-10-14 18:17:41,888 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 84 treesize of output 80 [2024-10-14 18:17:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:17:42,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428888572] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:17:42,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:17:42,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 62 [2024-10-14 18:17:42,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183105465] [2024-10-14 18:17:42,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:17:42,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-10-14 18:17:42,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:42,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-10-14 18:17:42,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=3690, Unknown=6, NotChecked=0, Total=3906 [2024-10-14 18:17:42,199 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 63 states, 63 states have (on average 1.492063492063492) internal successors, (94), 62 states have internal predecessors, (94), 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 18:17:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:44,053 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2024-10-14 18:17:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-14 18:17:44,053 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.492063492063492) internal successors, (94), 62 states have internal predecessors, (94), 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 34 [2024-10-14 18:17:44,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:44,054 INFO L225 Difference]: With dead ends: 64 [2024-10-14 18:17:44,054 INFO L226 Difference]: Without dead ends: 44 [2024-10-14 18:17:44,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=414, Invalid=6222, Unknown=6, NotChecked=0, Total=6642 [2024-10-14 18:17:44,056 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 34 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:44,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 283 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 18:17:44,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-14 18:17:44,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-10-14 18:17:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:44,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2024-10-14 18:17:44,059 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 34 [2024-10-14 18:17:44,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:44,059 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2024-10-14 18:17:44,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.492063492063492) internal successors, (94), 62 states have internal predecessors, (94), 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 18:17:44,060 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2024-10-14 18:17:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-14 18:17:44,061 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:17:44,061 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:44,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-14 18:17:44,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-14 18:17:44,262 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2024-10-14 18:17:44,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:17:44,263 INFO L85 PathProgramCache]: Analyzing trace with hash -810972299, now seen corresponding path program 2 times [2024-10-14 18:17:44,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:17:44,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184849794] [2024-10-14 18:17:44,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:17:44,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:17:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:17:44,371 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-14 18:17:44,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:17:44,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184849794] [2024-10-14 18:17:44,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184849794] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:17:44,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017474561] [2024-10-14 18:17:44,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 18:17:44,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:44,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:17:44,377 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:17:44,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 18:17:44,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 18:17:44,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 18:17:44,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 18:17:44,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:17:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-14 18:17:44,599 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 18:17:44,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017474561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:17:44,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 18:17:44,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-10-14 18:17:44,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742503488] [2024-10-14 18:17:44,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:17:44,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:17:44,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:17:44,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:17:44,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 18:17:44,601 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 18:17:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:17:44,615 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2024-10-14 18:17:44,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 18:17:44,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 38 [2024-10-14 18:17:44,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:17:44,616 INFO L225 Difference]: With dead ends: 12 [2024-10-14 18:17:44,616 INFO L226 Difference]: Without dead ends: 0 [2024-10-14 18:17:44,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 18:17:44,617 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:17:44,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 18:17:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-14 18:17:44,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-14 18:17:44,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:17:44,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-14 18:17:44,618 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2024-10-14 18:17:44,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:17:44,618 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-14 18:17:44,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 18:17:44,618 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-14 18:17:44,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-14 18:17:44,621 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 21 remaining) [2024-10-14 18:17:44,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 21 remaining) [2024-10-14 18:17:44,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 21 remaining) [2024-10-14 18:17:44,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 21 remaining) [2024-10-14 18:17:44,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 21 remaining) [2024-10-14 18:17:44,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 21 remaining) [2024-10-14 18:17:44,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 21 remaining) [2024-10-14 18:17:44,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 21 remaining) [2024-10-14 18:17:44,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 21 remaining) [2024-10-14 18:17:44,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 21 remaining) [2024-10-14 18:17:44,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 21 remaining) [2024-10-14 18:17:44,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 21 remaining) [2024-10-14 18:17:44,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (8 of 21 remaining) [2024-10-14 18:17:44,625 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE (7 of 21 remaining) [2024-10-14 18:17:44,625 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE (6 of 21 remaining) [2024-10-14 18:17:44,625 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 21 remaining) [2024-10-14 18:17:44,625 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 21 remaining) [2024-10-14 18:17:44,625 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 21 remaining) [2024-10-14 18:17:44,625 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 21 remaining) [2024-10-14 18:17:44,626 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (1 of 21 remaining) [2024-10-14 18:17:44,626 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (0 of 21 remaining) [2024-10-14 18:17:44,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-14 18:17:44,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:17:44,830 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:17:44,832 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 18:17:44,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:17:44 BoogieIcfgContainer [2024-10-14 18:17:44,837 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 18:17:44,838 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 18:17:44,838 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 18:17:44,838 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 18:17:44,839 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:16:38" (3/4) ... [2024-10-14 18:17:44,840 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 18:17:44,850 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-10-14 18:17:44,851 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-14 18:17:44,851 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 18:17:44,851 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-14 18:17:44,941 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 18:17:44,942 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 18:17:44,942 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 18:17:44,946 INFO L158 Benchmark]: Toolchain (without parser) took 68223.78ms. Allocated memory was 146.8MB in the beginning and 402.7MB in the end (delta: 255.9MB). Free memory was 75.1MB in the beginning and 150.8MB in the end (delta: -75.7MB). Peak memory consumption was 180.3MB. Max. memory is 16.1GB. [2024-10-14 18:17:44,946 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 146.8MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 18:17:44,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 620.84ms. Allocated memory was 146.8MB in the beginning and 222.3MB in the end (delta: 75.5MB). Free memory was 74.9MB in the beginning and 191.4MB in the end (delta: -116.5MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2024-10-14 18:17:44,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.44ms. Allocated memory is still 222.3MB. Free memory was 190.4MB in the beginning and 189.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 18:17:44,947 INFO L158 Benchmark]: Boogie Preprocessor took 75.95ms. Allocated memory is still 222.3MB. Free memory was 189.3MB in the beginning and 186.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 18:17:44,947 INFO L158 Benchmark]: RCFGBuilder took 654.89ms. Allocated memory is still 222.3MB. Free memory was 186.2MB in the beginning and 164.2MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-14 18:17:44,947 INFO L158 Benchmark]: TraceAbstraction took 66700.49ms. Allocated memory was 222.3MB in the beginning and 402.7MB in the end (delta: 180.4MB). Free memory was 163.1MB in the beginning and 156.1MB in the end (delta: 7.0MB). Peak memory consumption was 187.4MB. Max. memory is 16.1GB. [2024-10-14 18:17:44,947 INFO L158 Benchmark]: Witness Printer took 107.40ms. Allocated memory is still 402.7MB. Free memory was 156.1MB in the beginning and 150.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 18:17:44,948 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 146.8MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 620.84ms. Allocated memory was 146.8MB in the beginning and 222.3MB in the end (delta: 75.5MB). Free memory was 74.9MB in the beginning and 191.4MB in the end (delta: -116.5MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.44ms. Allocated memory is still 222.3MB. Free memory was 190.4MB in the beginning and 189.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 75.95ms. Allocated memory is still 222.3MB. Free memory was 189.3MB in the beginning and 186.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 654.89ms. Allocated memory is still 222.3MB. Free memory was 186.2MB in the beginning and 164.2MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 66700.49ms. Allocated memory was 222.3MB in the beginning and 402.7MB in the end (delta: 180.4MB). Free memory was 163.1MB in the beginning and 156.1MB in the end (delta: 7.0MB). Peak memory consumption was 187.4MB. Max. memory is 16.1GB. * Witness Printer took 107.40ms. Allocated memory is still 402.7MB. Free memory was 156.1MB in the beginning and 150.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 594]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 597]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 66.6s, OverallIterations: 25, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 687 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 687 mSDsluCounter, 2384 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1949 mSDsCounter, 83 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5324 IncrementalHoareTripleChecker+Invalid, 5407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 83 mSolverCounterUnsat, 435 mSDtfsCounter, 5324 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 885 GetRequests, 421 SyntacticMatches, 21 SemanticMatches, 443 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3629 ImplicationChecksByTransitivity, 43.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=23, InterpolantAutomatonStates: 226, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 25 MinimizatonAttempts, 106 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 48.4s InterpolantComputationTime, 819 NumberOfCodeBlocks, 819 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1023 ConstructedInterpolants, 83 QuantifiedInterpolants, 16515 SizeOfPredicates, 93 NumberOfNonLiveVariables, 3847 ConjunctsInSsa, 475 ConjunctsInUnsatCore, 50 InterpolantComputations, 14 PerfectInterpolantSequences, 231/487 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 21 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-14 18:17:44,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE