./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0237.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0237.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 59c31190ccc8063bc9e40e87ef868627685497d396c28c826c00fa8abad7dfea --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 06:23:57,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 06:23:57,796 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 06:23:57,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 06:23:57,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 06:23:57,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 06:23:57,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 06:23:57,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 06:23:57,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 06:23:57,831 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 06:23:57,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 06:23:57,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 06:23:57,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 06:23:57,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 06:23:57,833 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 06:23:57,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 06:23:57,833 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 06:23:57,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 06:23:57,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 06:23:57,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 06:23:57,834 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 06:23:57,834 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 06:23:57,834 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 06:23:57,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 06:23:57,834 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 06:23:57,834 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 06:23:57,834 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 06:23:57,834 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 06:23:57,835 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 06:23:57,835 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 06:23:57,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 06:23:57,835 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 06:23:57,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 06:23:57,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:23:57,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 06:23:57,836 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 06:23:57,836 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 06:23:57,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 06:23:57,836 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 06:23:57,836 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 06:23:57,836 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 06:23:57,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 06:23:57,837 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 59c31190ccc8063bc9e40e87ef868627685497d396c28c826c00fa8abad7dfea [2025-02-08 06:23:58,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 06:23:58,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 06:23:58,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 06:23:58,111 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 06:23:58,112 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 06:23:58,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0237.i [2025-02-08 06:23:59,391 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/78269d170/5b1145234dc74af3909b6a6af38ca0e6/FLAG81f45a9c5 [2025-02-08 06:23:59,753 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 06:23:59,754 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety/test-0237.i [2025-02-08 06:23:59,765 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/78269d170/5b1145234dc74af3909b6a6af38ca0e6/FLAG81f45a9c5 [2025-02-08 06:23:59,777 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/78269d170/5b1145234dc74af3909b6a6af38ca0e6 [2025-02-08 06:23:59,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 06:23:59,781 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 06:23:59,782 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 06:23:59,782 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 06:23:59,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 06:23:59,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:23:59" (1/1) ... [2025-02-08 06:23:59,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@939a412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:59, skipping insertion in model container [2025-02-08 06:23:59,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:23:59" (1/1) ... [2025-02-08 06:23:59,823 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 06:24:00,057 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 06:24:00,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:24:00,102 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 06:24:00,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:24:00,187 INFO L204 MainTranslator]: Completed translation [2025-02-08 06:24:00,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:24:00 WrapperNode [2025-02-08 06:24:00,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 06:24:00,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 06:24:00,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 06:24:00,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 06:24:00,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:24:00" (1/1) ... [2025-02-08 06:24:00,204 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:24:00" (1/1) ... [2025-02-08 06:24:00,224 INFO L138 Inliner]: procedures = 188, calls = 66, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 212 [2025-02-08 06:24:00,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 06:24:00,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 06:24:00,225 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 06:24:00,225 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 06:24:00,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:24:00" (1/1) ... [2025-02-08 06:24:00,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:24:00" (1/1) ... [2025-02-08 06:24:00,236 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:24:00" (1/1) ... [2025-02-08 06:24:00,273 INFO L175 MemorySlicer]: Split 38 memory accesses to 3 slices as follows [2, 4, 32]. 84 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 18 writes are split as follows [0, 1, 17]. [2025-02-08 06:24:00,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:24:00" (1/1) ... [2025-02-08 06:24:00,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:24:00" (1/1) ... [2025-02-08 06:24:00,293 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:24:00" (1/1) ... [2025-02-08 06:24:00,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:24:00" (1/1) ... [2025-02-08 06:24:00,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:24:00" (1/1) ... [2025-02-08 06:24:00,297 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:24:00" (1/1) ... [2025-02-08 06:24:00,305 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 06:24:00,305 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 06:24:00,305 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 06:24:00,305 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 06:24:00,306 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:24:00" (1/1) ... [2025-02-08 06:24:00,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:24:00,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:00,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 06:24:00,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 06:24:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 06:24:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 06:24:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 06:24:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 06:24:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 06:24:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 06:24:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 06:24:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 06:24:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2025-02-08 06:24:00,362 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2025-02-08 06:24:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 06:24:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 06:24:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 06:24:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 06:24:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 06:24:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 06:24:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 06:24:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 06:24:00,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 06:24:00,485 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 06:24:00,487 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 06:24:00,614 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L642: havoc calloc_model_#t~memset~res4#1.base, calloc_model_#t~memset~res4#1.offset; [2025-02-08 06:24:01,110 INFO L? ?]: Removed 223 outVars from TransFormulas that were not future-live. [2025-02-08 06:24:01,111 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 06:24:01,125 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 06:24:01,126 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 06:24:01,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:24:01 BoogieIcfgContainer [2025-02-08 06:24:01,126 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 06:24:01,128 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 06:24:01,128 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 06:24:01,133 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 06:24:01,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 06:23:59" (1/3) ... [2025-02-08 06:24:01,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f87549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:24:01, skipping insertion in model container [2025-02-08 06:24:01,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:24:00" (2/3) ... [2025-02-08 06:24:01,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f87549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:24:01, skipping insertion in model container [2025-02-08 06:24:01,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:24:01" (3/3) ... [2025-02-08 06:24:01,137 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0237.i [2025-02-08 06:24:01,149 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 06:24:01,150 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0237.i that has 2 procedures, 208 locations, 1 initial locations, 11 loop locations, and 87 error locations. [2025-02-08 06:24:01,186 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 06:24:01,197 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;@2a63f030, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 06:24:01,197 INFO L334 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2025-02-08 06:24:01,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 208 states, 113 states have (on average 1.9646017699115044) internal successors, (222), 200 states have internal predecessors, (222), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:01,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 06:24:01,208 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:01,208 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 06:24:01,208 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:01,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:01,212 INFO L85 PathProgramCache]: Analyzing trace with hash 258039, now seen corresponding path program 1 times [2025-02-08 06:24:01,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:01,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003238625] [2025-02-08 06:24:01,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:01,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:01,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 06:24:01,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 06:24:01,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:01,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:24:01,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:01,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003238625] [2025-02-08 06:24:01,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003238625] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:24:01,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:24:01,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:24:01,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422141903] [2025-02-08 06:24:01,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:24:01,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 06:24:01,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:01,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 06:24:01,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 06:24:01,355 INFO L87 Difference]: Start difference. First operand has 208 states, 113 states have (on average 1.9646017699115044) internal successors, (222), 200 states have internal predecessors, (222), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:24:01,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:01,375 INFO L93 Difference]: Finished difference Result 208 states and 223 transitions. [2025-02-08 06:24:01,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 06:24:01,377 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-02-08 06:24:01,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:01,384 INFO L225 Difference]: With dead ends: 208 [2025-02-08 06:24:01,384 INFO L226 Difference]: Without dead ends: 206 [2025-02-08 06:24:01,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 06:24:01,388 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:01,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:24:01,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2025-02-08 06:24:01,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2025-02-08 06:24:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 112 states have (on average 1.8660714285714286) internal successors, (209), 198 states have internal predecessors, (209), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 221 transitions. [2025-02-08 06:24:01,426 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 221 transitions. Word has length 3 [2025-02-08 06:24:01,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:01,427 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 221 transitions. [2025-02-08 06:24:01,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:24:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 221 transitions. [2025-02-08 06:24:01,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-08 06:24:01,428 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:01,428 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 06:24:01,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 06:24:01,428 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:01,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:01,429 INFO L85 PathProgramCache]: Analyzing trace with hash 248064306, now seen corresponding path program 1 times [2025-02-08 06:24:01,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:01,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437323307] [2025-02-08 06:24:01,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:01,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:01,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 06:24:01,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 06:24:01,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:01,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:24:01,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:01,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437323307] [2025-02-08 06:24:01,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437323307] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:24:01,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:24:01,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:24:01,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339067755] [2025-02-08 06:24:01,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:24:01,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:24:01,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:01,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:24:01,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:24:01,586 INFO L87 Difference]: Start difference. First operand 206 states and 221 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:24:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:01,792 INFO L93 Difference]: Finished difference Result 205 states and 220 transitions. [2025-02-08 06:24:01,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:24:01,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-08 06:24:01,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:01,794 INFO L225 Difference]: With dead ends: 205 [2025-02-08 06:24:01,794 INFO L226 Difference]: Without dead ends: 205 [2025-02-08 06:24:01,794 INFO L434 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 [2025-02-08 06:24:01,795 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 3 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:01,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 349 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:24:01,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-02-08 06:24:01,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2025-02-08 06:24:01,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 112 states have (on average 1.8571428571428572) internal successors, (208), 197 states have internal predecessors, (208), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:01,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 220 transitions. [2025-02-08 06:24:01,807 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 220 transitions. Word has length 5 [2025-02-08 06:24:01,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:01,807 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 220 transitions. [2025-02-08 06:24:01,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:24:01,807 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 220 transitions. [2025-02-08 06:24:01,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 06:24:01,808 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:01,808 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 06:24:01,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 06:24:01,808 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:01,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:01,809 INFO L85 PathProgramCache]: Analyzing trace with hash -899941127, now seen corresponding path program 1 times [2025-02-08 06:24:01,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:01,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570849377] [2025-02-08 06:24:01,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:01,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:01,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:24:01,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:24:01,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:01,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:24:01,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934093248] [2025-02-08 06:24:01,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:01,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:01,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:01,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:01,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 06:24:01,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:24:01,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:24:01,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:01,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:01,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 06:24:01,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:02,012 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 [2025-02-08 06:24:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:24:02,040 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:24:02,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:02,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570849377] [2025-02-08 06:24:02,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:24:02,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934093248] [2025-02-08 06:24:02,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934093248] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:24:02,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:24:02,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:24:02,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410451725] [2025-02-08 06:24:02,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:24:02,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:24:02,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:02,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:24:02,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:24:02,043 INFO L87 Difference]: Start difference. First operand 205 states and 220 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:24:02,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:02,197 INFO L93 Difference]: Finished difference Result 213 states and 228 transitions. [2025-02-08 06:24:02,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:24:02,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-08 06:24:02,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:02,199 INFO L225 Difference]: With dead ends: 213 [2025-02-08 06:24:02,199 INFO L226 Difference]: Without dead ends: 213 [2025-02-08 06:24:02,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:24:02,200 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 10 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:02,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 572 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:24:02,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2025-02-08 06:24:02,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2025-02-08 06:24:02,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 119 states have (on average 1.815126050420168) internal successors, (216), 204 states have internal predecessors, (216), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 228 transitions. [2025-02-08 06:24:02,213 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 228 transitions. Word has length 6 [2025-02-08 06:24:02,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:02,213 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 228 transitions. [2025-02-08 06:24:02,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:24:02,213 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 228 transitions. [2025-02-08 06:24:02,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-08 06:24:02,214 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:02,214 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:02,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 06:24:02,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:02,418 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:02,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:02,418 INFO L85 PathProgramCache]: Analyzing trace with hash -57304533, now seen corresponding path program 1 times [2025-02-08 06:24:02,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:02,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161056076] [2025-02-08 06:24:02,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:02,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:02,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 06:24:02,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 06:24:02,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:02,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:24:02,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098567935] [2025-02-08 06:24:02,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:02,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:02,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:02,465 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:02,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 06:24:02,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 06:24:02,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 06:24:02,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:02,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:02,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 06:24:02,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:02,589 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 [2025-02-08 06:24:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:24:02,614 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:24:02,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:02,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161056076] [2025-02-08 06:24:02,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:24:02,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098567935] [2025-02-08 06:24:02,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098567935] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:24:02,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:24:02,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:24:02,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581760397] [2025-02-08 06:24:02,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:24:02,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:24:02,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:02,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:24:02,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:24:02,617 INFO L87 Difference]: Start difference. First operand 213 states and 228 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:24:02,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:02,767 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2025-02-08 06:24:02,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:24:02,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2025-02-08 06:24:02,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:02,769 INFO L225 Difference]: With dead ends: 221 [2025-02-08 06:24:02,769 INFO L226 Difference]: Without dead ends: 221 [2025-02-08 06:24:02,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:24:02,770 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 10 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:02,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 574 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:24:02,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2025-02-08 06:24:02,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2025-02-08 06:24:02,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 126 states have (on average 1.7777777777777777) internal successors, (224), 211 states have internal predecessors, (224), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 236 transitions. [2025-02-08 06:24:02,785 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 236 transitions. Word has length 17 [2025-02-08 06:24:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:02,786 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 236 transitions. [2025-02-08 06:24:02,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:24:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 236 transitions. [2025-02-08 06:24:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-08 06:24:02,787 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:02,787 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:02,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 06:24:02,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:02,988 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:02,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:02,988 INFO L85 PathProgramCache]: Analyzing trace with hash -462505651, now seen corresponding path program 1 times [2025-02-08 06:24:02,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:02,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929612915] [2025-02-08 06:24:02,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:02,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:03,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 06:24:03,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 06:24:03,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:03,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:24:03,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78938765] [2025-02-08 06:24:03,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:03,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:03,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:03,068 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:03,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 06:24:03,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 06:24:03,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 06:24:03,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:03,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:03,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-02-08 06:24:03,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 06:24:03,330 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:24:03,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:03,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929612915] [2025-02-08 06:24:03,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:24:03,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78938765] [2025-02-08 06:24:03,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78938765] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:24:03,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:24:03,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:24:03,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479158207] [2025-02-08 06:24:03,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:24:03,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:24:03,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:03,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:24:03,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:24:03,332 INFO L87 Difference]: Start difference. First operand 221 states and 236 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 06:24:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:03,371 INFO L93 Difference]: Finished difference Result 236 states and 251 transitions. [2025-02-08 06:24:03,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:24:03,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2025-02-08 06:24:03,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:03,373 INFO L225 Difference]: With dead ends: 236 [2025-02-08 06:24:03,373 INFO L226 Difference]: Without dead ends: 224 [2025-02-08 06:24:03,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:24:03,374 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 2 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:03,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 634 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:24:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2025-02-08 06:24:03,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2025-02-08 06:24:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 129 states have (on average 1.7596899224806202) internal successors, (227), 214 states have internal predecessors, (227), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:03,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 239 transitions. [2025-02-08 06:24:03,382 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 239 transitions. Word has length 60 [2025-02-08 06:24:03,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:03,382 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 239 transitions. [2025-02-08 06:24:03,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 06:24:03,382 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 239 transitions. [2025-02-08 06:24:03,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-08 06:24:03,383 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:03,384 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:03,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 06:24:03,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:03,588 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:03,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:03,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1899051389, now seen corresponding path program 1 times [2025-02-08 06:24:03,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:03,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305702989] [2025-02-08 06:24:03,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:03,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:03,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-08 06:24:03,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 06:24:03,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:03,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:24:03,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141196922] [2025-02-08 06:24:03,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:03,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:03,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:03,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:03,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 06:24:03,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-08 06:24:04,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 06:24:04,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:04,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:04,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-08 06:24:04,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:04,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2025-02-08 06:24:04,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:24:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 85 proven. 7 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-02-08 06:24:04,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 45 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-08 06:24:04,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:04,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305702989] [2025-02-08 06:24:04,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:24:04,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141196922] [2025-02-08 06:24:04,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141196922] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:24:04,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:24:04,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2025-02-08 06:24:04,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99760025] [2025-02-08 06:24:04,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:04,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 06:24:04,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:04,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 06:24:04,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-02-08 06:24:04,420 INFO L87 Difference]: Start difference. First operand 224 states and 239 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-08 06:24:04,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:04,840 INFO L93 Difference]: Finished difference Result 245 states and 261 transitions. [2025-02-08 06:24:04,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 06:24:04,841 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2025-02-08 06:24:04,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:04,842 INFO L225 Difference]: With dead ends: 245 [2025-02-08 06:24:04,842 INFO L226 Difference]: Without dead ends: 229 [2025-02-08 06:24:04,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2025-02-08 06:24:04,843 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 22 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:04,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1732 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:24:04,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-02-08 06:24:04,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2025-02-08 06:24:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 134 states have (on average 1.7313432835820894) internal successors, (232), 219 states have internal predecessors, (232), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:04,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 244 transitions. [2025-02-08 06:24:04,850 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 244 transitions. Word has length 65 [2025-02-08 06:24:04,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:04,850 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 244 transitions. [2025-02-08 06:24:04,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-08 06:24:04,850 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 244 transitions. [2025-02-08 06:24:04,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-08 06:24:04,851 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:04,852 INFO L218 NwaCegarLoop]: trace histogram [18, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:04,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 06:24:05,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-08 06:24:05,053 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:05,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:05,054 INFO L85 PathProgramCache]: Analyzing trace with hash 275492429, now seen corresponding path program 2 times [2025-02-08 06:24:05,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:05,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626233420] [2025-02-08 06:24:05,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:24:05,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:05,086 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 78 statements into 2 equivalence classes. [2025-02-08 06:24:05,244 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 78 of 78 statements. [2025-02-08 06:24:05,244 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:24:05,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:24:05,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580215520] [2025-02-08 06:24:05,250 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:24:05,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:05,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:05,252 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:05,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 06:24:05,383 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 78 statements into 2 equivalence classes. [2025-02-08 06:24:05,601 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 78 of 78 statements. [2025-02-08 06:24:05,601 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:24:05,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:05,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-02-08 06:24:05,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:05,633 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 [2025-02-08 06:24:05,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:24:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 91 proven. 3 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2025-02-08 06:24:05,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 15 proven. 87 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2025-02-08 06:24:06,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:06,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626233420] [2025-02-08 06:24:06,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:24:06,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580215520] [2025-02-08 06:24:06,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580215520] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:24:06,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:24:06,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2025-02-08 06:24:06,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156679477] [2025-02-08 06:24:06,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:06,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 06:24:06,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:06,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 06:24:06,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-02-08 06:24:06,008 INFO L87 Difference]: Start difference. First operand 229 states and 244 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-08 06:24:06,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:06,530 INFO L93 Difference]: Finished difference Result 246 states and 263 transitions. [2025-02-08 06:24:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 06:24:06,531 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2025-02-08 06:24:06,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:06,532 INFO L225 Difference]: With dead ends: 246 [2025-02-08 06:24:06,532 INFO L226 Difference]: Without dead ends: 234 [2025-02-08 06:24:06,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2025-02-08 06:24:06,533 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 23 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:06,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1303 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:24:06,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2025-02-08 06:24:06,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2025-02-08 06:24:06,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 139 states have (on average 1.7050359712230216) internal successors, (237), 224 states have internal predecessors, (237), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 249 transitions. [2025-02-08 06:24:06,539 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 249 transitions. Word has length 78 [2025-02-08 06:24:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:06,539 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 249 transitions. [2025-02-08 06:24:06,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-08 06:24:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 249 transitions. [2025-02-08 06:24:06,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-02-08 06:24:06,540 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:06,540 INFO L218 NwaCegarLoop]: trace histogram [22, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:06,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 06:24:06,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:06,745 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:06,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:06,745 INFO L85 PathProgramCache]: Analyzing trace with hash 648164429, now seen corresponding path program 3 times [2025-02-08 06:24:06,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:06,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734455570] [2025-02-08 06:24:06,746 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:24:06,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:06,779 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 82 statements into 12 equivalence classes. [2025-02-08 06:24:07,089 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 82 of 82 statements. [2025-02-08 06:24:07,090 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-02-08 06:24:07,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:24:07,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846725115] [2025-02-08 06:24:07,100 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:24:07,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:07,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:07,104 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:07,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 06:24:07,258 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 82 statements into 12 equivalence classes. [2025-02-08 06:24:07,281 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 82 statements. [2025-02-08 06:24:07,282 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 06:24:07,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:07,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 06:24:07,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:07,312 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 [2025-02-08 06:24:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2025-02-08 06:24:07,330 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:24:07,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:07,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734455570] [2025-02-08 06:24:07,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:24:07,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846725115] [2025-02-08 06:24:07,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846725115] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:24:07,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:24:07,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:24:07,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445656830] [2025-02-08 06:24:07,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:24:07,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:24:07,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:07,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:24:07,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:24:07,332 INFO L87 Difference]: Start difference. First operand 234 states and 249 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 06:24:07,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:07,452 INFO L93 Difference]: Finished difference Result 233 states and 248 transitions. [2025-02-08 06:24:07,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:24:07,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 82 [2025-02-08 06:24:07,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:07,455 INFO L225 Difference]: With dead ends: 233 [2025-02-08 06:24:07,455 INFO L226 Difference]: Without dead ends: 233 [2025-02-08 06:24:07,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:24:07,456 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 10 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:07,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 581 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:24:07,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2025-02-08 06:24:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2025-02-08 06:24:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 139 states have (on average 1.6978417266187051) internal successors, (236), 223 states have internal predecessors, (236), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:07,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 248 transitions. [2025-02-08 06:24:07,464 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 248 transitions. Word has length 82 [2025-02-08 06:24:07,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:07,465 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 248 transitions. [2025-02-08 06:24:07,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 06:24:07,465 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 248 transitions. [2025-02-08 06:24:07,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-02-08 06:24:07,467 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:07,467 INFO L218 NwaCegarLoop]: trace histogram [25, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:07,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 06:24:07,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-08 06:24:07,668 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:07,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:07,669 INFO L85 PathProgramCache]: Analyzing trace with hash 888121997, now seen corresponding path program 1 times [2025-02-08 06:24:07,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:07,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001424162] [2025-02-08 06:24:07,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:07,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:07,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-02-08 06:24:07,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-02-08 06:24:07,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:07,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:24:07,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430585457] [2025-02-08 06:24:07,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:07,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:07,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:07,845 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:07,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 06:24:08,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-02-08 06:24:08,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-02-08 06:24:08,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:08,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:08,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-02-08 06:24:08,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:08,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2025-02-08 06:24:08,699 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:24:08,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:24:08,768 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 [2025-02-08 06:24:08,782 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 06:24:08,782 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 [2025-02-08 06:24:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 26 not checked. [2025-02-08 06:24:08,801 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:08,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:08,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001424162] [2025-02-08 06:24:08,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:24:08,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430585457] [2025-02-08 06:24:08,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430585457] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:08,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 06:24:08,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-02-08 06:24:08,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914000648] [2025-02-08 06:24:08,918 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:08,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 06:24:08,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:08,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 06:24:08,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=153, Unknown=1, NotChecked=24, Total=210 [2025-02-08 06:24:08,919 INFO L87 Difference]: Start difference. First operand 233 states and 248 transitions. Second operand has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 06:24:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:09,839 INFO L93 Difference]: Finished difference Result 226 states and 241 transitions. [2025-02-08 06:24:09,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 06:24:09,840 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 91 [2025-02-08 06:24:09,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:09,842 INFO L225 Difference]: With dead ends: 226 [2025-02-08 06:24:09,843 INFO L226 Difference]: Without dead ends: 226 [2025-02-08 06:24:09,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=294, Unknown=1, NotChecked=34, Total=380 [2025-02-08 06:24:09,844 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 31 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:09,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1038 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1045 Invalid, 0 Unknown, 204 Unchecked, 0.7s Time] [2025-02-08 06:24:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2025-02-08 06:24:09,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2025-02-08 06:24:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 139 states have (on average 1.6474820143884892) internal successors, (229), 216 states have internal predecessors, (229), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 241 transitions. [2025-02-08 06:24:09,853 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 241 transitions. Word has length 91 [2025-02-08 06:24:09,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:09,853 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 241 transitions. [2025-02-08 06:24:09,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 06:24:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 241 transitions. [2025-02-08 06:24:09,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-02-08 06:24:09,856 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:09,856 INFO L218 NwaCegarLoop]: trace histogram [25, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:09,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 06:24:10,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:10,057 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:10,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:10,058 INFO L85 PathProgramCache]: Analyzing trace with hash 888121996, now seen corresponding path program 1 times [2025-02-08 06:24:10,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:10,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700700008] [2025-02-08 06:24:10,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:10,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:10,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-02-08 06:24:10,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-02-08 06:24:10,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:10,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 251 proven. 26 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2025-02-08 06:24:11,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:11,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700700008] [2025-02-08 06:24:11,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700700008] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:11,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463096983] [2025-02-08 06:24:11,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:11,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:11,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:11,125 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:11,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 06:24:11,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-02-08 06:24:11,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-02-08 06:24:11,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:11,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:11,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-08 06:24:11,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:11,530 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2025-02-08 06:24:11,558 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-08 06:24:11,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-02-08 06:24:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 251 proven. 1 refuted. 0 times theorem prover too weak. 293 trivial. 25 not checked. [2025-02-08 06:24:11,573 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:11,788 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 06:24:11,789 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 [2025-02-08 06:24:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 251 proven. 26 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2025-02-08 06:24:11,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463096983] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:24:11,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:24:11,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2025-02-08 06:24:11,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892923497] [2025-02-08 06:24:11,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:11,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 06:24:11,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:11,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 06:24:11,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=199, Unknown=1, NotChecked=28, Total=272 [2025-02-08 06:24:11,810 INFO L87 Difference]: Start difference. First operand 226 states and 241 transitions. Second operand has 17 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 06:24:12,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:12,333 INFO L93 Difference]: Finished difference Result 225 states and 240 transitions. [2025-02-08 06:24:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:24:12,333 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2025-02-08 06:24:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:12,335 INFO L225 Difference]: With dead ends: 225 [2025-02-08 06:24:12,335 INFO L226 Difference]: Without dead ends: 225 [2025-02-08 06:24:12,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 173 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=311, Unknown=1, NotChecked=36, Total=420 [2025-02-08 06:24:12,336 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 18 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:12,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1438 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 833 Invalid, 0 Unknown, 204 Unchecked, 0.4s Time] [2025-02-08 06:24:12,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-02-08 06:24:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2025-02-08 06:24:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 139 states have (on average 1.6402877697841727) internal successors, (228), 215 states have internal predecessors, (228), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:12,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 240 transitions. [2025-02-08 06:24:12,341 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 240 transitions. Word has length 91 [2025-02-08 06:24:12,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:12,341 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 240 transitions. [2025-02-08 06:24:12,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 06:24:12,342 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 240 transitions. [2025-02-08 06:24:12,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-02-08 06:24:12,342 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:12,342 INFO L218 NwaCegarLoop]: trace histogram [25, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:12,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 06:24:12,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:12,547 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:12,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:12,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1044013152, now seen corresponding path program 1 times [2025-02-08 06:24:12,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:12,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124654989] [2025-02-08 06:24:12,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:12,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:12,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-02-08 06:24:12,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-02-08 06:24:12,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:12,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2025-02-08 06:24:13,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:13,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124654989] [2025-02-08 06:24:13,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124654989] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:24:13,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:24:13,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 06:24:13,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518338123] [2025-02-08 06:24:13,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:24:13,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 06:24:13,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:13,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 06:24:13,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 06:24:13,202 INFO L87 Difference]: Start difference. First operand 225 states and 240 transitions. Second operand has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-08 06:24:13,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:13,536 INFO L93 Difference]: Finished difference Result 224 states and 239 transitions. [2025-02-08 06:24:13,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:24:13,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 94 [2025-02-08 06:24:13,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:13,538 INFO L225 Difference]: With dead ends: 224 [2025-02-08 06:24:13,538 INFO L226 Difference]: Without dead ends: 224 [2025-02-08 06:24:13,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-08 06:24:13,539 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 9 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:13,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1032 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:24:13,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2025-02-08 06:24:13,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2025-02-08 06:24:13,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 139 states have (on average 1.6330935251798562) internal successors, (227), 214 states have internal predecessors, (227), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 239 transitions. [2025-02-08 06:24:13,544 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 239 transitions. Word has length 94 [2025-02-08 06:24:13,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:13,545 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 239 transitions. [2025-02-08 06:24:13,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-08 06:24:13,545 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 239 transitions. [2025-02-08 06:24:13,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-02-08 06:24:13,546 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:13,546 INFO L218 NwaCegarLoop]: trace histogram [25, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:13,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 06:24:13,546 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:13,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:13,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1044013153, now seen corresponding path program 1 times [2025-02-08 06:24:13,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:13,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947116401] [2025-02-08 06:24:13,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:13,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:13,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-02-08 06:24:13,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-02-08 06:24:13,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:13,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 251 proven. 36 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2025-02-08 06:24:15,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:15,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947116401] [2025-02-08 06:24:15,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947116401] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:15,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859293287] [2025-02-08 06:24:15,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:15,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:15,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:15,309 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:15,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 06:24:15,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-02-08 06:24:16,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-02-08 06:24:16,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:16,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:16,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-02-08 06:24:16,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:16,199 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 [2025-02-08 06:24:22,672 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:24:22,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:24:22,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-08 06:24:22,759 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 06:24:22,760 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 [2025-02-08 06:24:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 211 proven. 125 refuted. 0 times theorem prover too weak. 188 trivial. 46 not checked. [2025-02-08 06:24:22,845 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:22,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859293287] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:22,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:24:22,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22] total 36 [2025-02-08 06:24:22,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036448157] [2025-02-08 06:24:22,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:22,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-08 06:24:22,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:22,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-08 06:24:22,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1219, Unknown=3, NotChecked=70, Total=1406 [2025-02-08 06:24:22,965 INFO L87 Difference]: Start difference. First operand 224 states and 239 transitions. Second operand has 36 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:24:27,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:24:29,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:29,951 INFO L93 Difference]: Finished difference Result 238 states and 260 transitions. [2025-02-08 06:24:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 06:24:29,952 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 94 [2025-02-08 06:24:29,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:29,954 INFO L225 Difference]: With dead ends: 238 [2025-02-08 06:24:29,954 INFO L226 Difference]: Without dead ends: 235 [2025-02-08 06:24:29,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=208, Invalid=1955, Unknown=3, NotChecked=90, Total=2256 [2025-02-08 06:24:29,956 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 6 mSDsluCounter, 3247 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3451 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:29,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3451 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2604 Invalid, 1 Unknown, 211 Unchecked, 6.1s Time] [2025-02-08 06:24:29,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2025-02-08 06:24:29,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 229. [2025-02-08 06:24:29,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 143 states have (on average 1.6223776223776223) internal successors, (232), 219 states have internal predecessors, (232), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-08 06:24:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 247 transitions. [2025-02-08 06:24:29,965 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 247 transitions. Word has length 94 [2025-02-08 06:24:29,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:29,965 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 247 transitions. [2025-02-08 06:24:29,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:24:29,966 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 247 transitions. [2025-02-08 06:24:29,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-02-08 06:24:29,966 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:29,967 INFO L218 NwaCegarLoop]: trace histogram [26, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:29,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 06:24:30,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:30,171 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:30,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:30,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1551484551, now seen corresponding path program 2 times [2025-02-08 06:24:30,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:30,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216569330] [2025-02-08 06:24:30,171 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:24:30,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:30,204 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-02-08 06:24:30,328 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-02-08 06:24:30,328 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:24:30,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 273 proven. 45 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2025-02-08 06:24:32,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:32,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216569330] [2025-02-08 06:24:32,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216569330] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:32,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443483275] [2025-02-08 06:24:32,030 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:24:32,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:32,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:32,032 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:32,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 06:24:32,300 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-02-08 06:24:32,815 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-02-08 06:24:32,815 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:24:32,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:32,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 91 conjuncts are in the unsatisfiable core [2025-02-08 06:24:32,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:33,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-02-08 06:24:34,759 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:24:34,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:24:34,951 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 [2025-02-08 06:24:34,959 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 06:24:34,959 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 [2025-02-08 06:24:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 170 proven. 309 refuted. 0 times theorem prover too weak. 95 trivial. 27 not checked. [2025-02-08 06:24:34,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:35,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443483275] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:35,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:24:35,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 29] total 44 [2025-02-08 06:24:35,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788480999] [2025-02-08 06:24:35,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:35,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-02-08 06:24:35,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:35,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-02-08 06:24:35,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1849, Unknown=1, NotChecked=86, Total=2070 [2025-02-08 06:24:35,121 INFO L87 Difference]: Start difference. First operand 229 states and 247 transitions. Second operand has 44 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 39 states have internal predecessors, (77), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:24:39,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:24:41,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:41,973 INFO L93 Difference]: Finished difference Result 267 states and 302 transitions. [2025-02-08 06:24:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-08 06:24:41,975 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 39 states have internal predecessors, (77), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2025-02-08 06:24:41,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:41,977 INFO L225 Difference]: With dead ends: 267 [2025-02-08 06:24:41,977 INFO L226 Difference]: Without dead ends: 264 [2025-02-08 06:24:41,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=288, Invalid=3621, Unknown=1, NotChecked=122, Total=4032 [2025-02-08 06:24:41,979 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 18 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 2045 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2045 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 245 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:41,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3215 Invalid, 2306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2045 Invalid, 1 Unknown, 245 Unchecked, 5.5s Time] [2025-02-08 06:24:41,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2025-02-08 06:24:41,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 230. [2025-02-08 06:24:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 144 states have (on average 1.625) internal successors, (234), 220 states have internal predecessors, (234), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-08 06:24:41,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 249 transitions. [2025-02-08 06:24:41,993 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 249 transitions. Word has length 95 [2025-02-08 06:24:41,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:41,993 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 249 transitions. [2025-02-08 06:24:41,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 39 states have internal predecessors, (77), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:24:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 249 transitions. [2025-02-08 06:24:41,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-02-08 06:24:41,994 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:41,994 INFO L218 NwaCegarLoop]: trace histogram [27, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:42,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 06:24:42,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-08 06:24:42,195 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:42,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:42,195 INFO L85 PathProgramCache]: Analyzing trace with hash -407534751, now seen corresponding path program 3 times [2025-02-08 06:24:42,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:42,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59687338] [2025-02-08 06:24:42,195 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:24:42,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:42,235 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 96 statements into 12 equivalence classes. [2025-02-08 06:24:42,278 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 62 of 96 statements. [2025-02-08 06:24:42,279 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-08 06:24:42,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 295 proven. 55 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2025-02-08 06:24:43,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:43,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59687338] [2025-02-08 06:24:43,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59687338] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:43,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766200134] [2025-02-08 06:24:43,338 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:24:43,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:43,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:43,342 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:43,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 06:24:43,610 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 96 statements into 12 equivalence classes. [2025-02-08 06:24:43,639 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 27 of 96 statements. [2025-02-08 06:24:43,639 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 06:24:43,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:43,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-02-08 06:24:43,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:43,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2025-02-08 06:24:43,863 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 19 treesize of output 1 [2025-02-08 06:24:43,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:24:43,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-08 06:24:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2025-02-08 06:24:43,926 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:24:43,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766200134] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:24:43,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 06:24:43,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 27 [2025-02-08 06:24:43,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212328759] [2025-02-08 06:24:43,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:24:43,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 06:24:43,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:43,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 06:24:43,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2025-02-08 06:24:43,927 INFO L87 Difference]: Start difference. First operand 230 states and 249 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-08 06:24:44,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:44,304 INFO L93 Difference]: Finished difference Result 229 states and 248 transitions. [2025-02-08 06:24:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 06:24:44,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 96 [2025-02-08 06:24:44,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:44,306 INFO L225 Difference]: With dead ends: 229 [2025-02-08 06:24:44,306 INFO L226 Difference]: Without dead ends: 229 [2025-02-08 06:24:44,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=738, Unknown=0, NotChecked=0, Total=812 [2025-02-08 06:24:44,307 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 3 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:44,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1225 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:24:44,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-02-08 06:24:44,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2025-02-08 06:24:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 144 states have (on average 1.6180555555555556) internal successors, (233), 219 states have internal predecessors, (233), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-08 06:24:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 248 transitions. [2025-02-08 06:24:44,313 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 248 transitions. Word has length 96 [2025-02-08 06:24:44,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:44,313 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 248 transitions. [2025-02-08 06:24:44,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-08 06:24:44,314 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 248 transitions. [2025-02-08 06:24:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-02-08 06:24:44,314 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:44,315 INFO L218 NwaCegarLoop]: trace histogram [27, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:44,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 06:24:44,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-08 06:24:44,515 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:44,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:44,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1004915685, now seen corresponding path program 1 times [2025-02-08 06:24:44,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:44,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608733331] [2025-02-08 06:24:44,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:44,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:44,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-02-08 06:24:44,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-02-08 06:24:44,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:44,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 356 proven. 79 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2025-02-08 06:24:45,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:45,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608733331] [2025-02-08 06:24:45,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608733331] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:45,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156657960] [2025-02-08 06:24:45,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:45,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:45,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:45,236 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:45,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 06:24:45,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-02-08 06:24:45,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-02-08 06:24:45,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:45,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:45,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-02-08 06:24:45,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:45,641 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#valid| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|))) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:24:45,701 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-02-08 06:24:45,702 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 [2025-02-08 06:24:45,818 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-08 06:24:45,818 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 [2025-02-08 06:24:45,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 06:24:45,884 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 13 [2025-02-08 06:24:45,921 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 335 proven. 25 refuted. 0 times theorem prover too weak. 198 trivial. 75 not checked. [2025-02-08 06:24:45,921 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:46,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156657960] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:46,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:24:46,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 22 [2025-02-08 06:24:46,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975623609] [2025-02-08 06:24:46,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:46,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 06:24:46,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:46,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 06:24:46,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=820, Unknown=1, NotChecked=58, Total=992 [2025-02-08 06:24:46,309 INFO L87 Difference]: Start difference. First operand 229 states and 248 transitions. Second operand has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 20 states have internal predecessors, (72), 2 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 06:24:47,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:47,044 INFO L93 Difference]: Finished difference Result 225 states and 244 transitions. [2025-02-08 06:24:47,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 06:24:47,044 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 20 states have internal predecessors, (72), 2 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2025-02-08 06:24:47,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:47,045 INFO L225 Difference]: With dead ends: 225 [2025-02-08 06:24:47,045 INFO L226 Difference]: Without dead ends: 225 [2025-02-08 06:24:47,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1092, Unknown=1, NotChecked=68, Total=1332 [2025-02-08 06:24:47,046 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 37 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:47,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1992 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1359 Invalid, 0 Unknown, 197 Unchecked, 0.6s Time] [2025-02-08 06:24:47,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-02-08 06:24:47,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2025-02-08 06:24:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 144 states have (on average 1.5902777777777777) internal successors, (229), 215 states have internal predecessors, (229), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-08 06:24:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 244 transitions. [2025-02-08 06:24:47,052 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 244 transitions. Word has length 99 [2025-02-08 06:24:47,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:47,052 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 244 transitions. [2025-02-08 06:24:47,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 20 states have internal predecessors, (72), 2 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 06:24:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 244 transitions. [2025-02-08 06:24:47,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-02-08 06:24:47,053 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:47,053 INFO L218 NwaCegarLoop]: trace histogram [27, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:47,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 06:24:47,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:47,254 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:24:47,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:47,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1004915686, now seen corresponding path program 1 times [2025-02-08 06:24:47,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:47,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415565130] [2025-02-08 06:24:47,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:47,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:47,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-02-08 06:24:47,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-02-08 06:24:47,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:47,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 295 proven. 55 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2025-02-08 06:24:49,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:49,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415565130] [2025-02-08 06:24:49,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415565130] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:49,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066631393] [2025-02-08 06:24:49,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:49,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:49,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:49,052 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:49,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 06:24:49,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-02-08 06:24:49,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-02-08 06:24:49,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:49,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:49,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-02-08 06:24:49,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:49,825 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 [2025-02-08 06:25:11,224 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 06:25:11,224 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 [2025-02-08 06:25:11,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-08 06:25:11,297 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 19 treesize of output 1 [2025-02-08 06:25:11,301 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 17 treesize of output 13 [2025-02-08 06:25:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 235 proven. 226 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2025-02-08 06:25:11,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:25:11,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066631393] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:25:11,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:25:11,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28] total 45 [2025-02-08 06:25:11,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598908022] [2025-02-08 06:25:11,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:25:11,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-08 06:25:11,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:25:11,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-08 06:25:11,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2022, Unknown=5, NotChecked=0, Total=2162 [2025-02-08 06:25:11,439 INFO L87 Difference]: Start difference. First operand 225 states and 244 transitions. Second operand has 45 states, 43 states have (on average 1.697674418604651) internal successors, (73), 40 states have internal predecessors, (73), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:25:15,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:25:18,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:25:18,298 INFO L93 Difference]: Finished difference Result 246 states and 275 transitions. [2025-02-08 06:25:18,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 06:25:18,299 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 1.697674418604651) internal successors, (73), 40 states have internal predecessors, (73), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 99 [2025-02-08 06:25:18,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:25:18,300 INFO L225 Difference]: With dead ends: 246 [2025-02-08 06:25:18,300 INFO L226 Difference]: Without dead ends: 243 [2025-02-08 06:25:18,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=239, Invalid=3178, Unknown=5, NotChecked=0, Total=3422 [2025-02-08 06:25:18,302 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 16 mSDsluCounter, 3438 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3634 SdHoareTripleChecker+Invalid, 2569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:25:18,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3634 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2543 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2025-02-08 06:25:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2025-02-08 06:25:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 226. [2025-02-08 06:25:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 145 states have (on average 1.5931034482758621) internal successors, (231), 216 states have internal predecessors, (231), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-08 06:25:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 246 transitions. [2025-02-08 06:25:18,308 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 246 transitions. Word has length 99 [2025-02-08 06:25:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:25:18,309 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 246 transitions. [2025-02-08 06:25:18,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 1.697674418604651) internal successors, (73), 40 states have internal predecessors, (73), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:25:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 246 transitions. [2025-02-08 06:25:18,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-02-08 06:25:18,310 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:25:18,310 INFO L218 NwaCegarLoop]: trace histogram [28, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:25:18,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 06:25:18,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:25:18,511 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-08 06:25:18,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:25:18,511 INFO L85 PathProgramCache]: Analyzing trace with hash -502406706, now seen corresponding path program 2 times [2025-02-08 06:25:18,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:25:18,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584250204] [2025-02-08 06:25:18,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:25:18,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:25:18,539 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 100 statements into 2 equivalence classes. [2025-02-08 06:25:18,569 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 100 of 100 statements. [2025-02-08 06:25:18,570 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:25:18,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:25:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 150 proven. 6 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2025-02-08 06:25:19,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:25:19,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584250204] [2025-02-08 06:25:19,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584250204] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:25:19,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304853751] [2025-02-08 06:25:19,320 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:25:19,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:25:19,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:25:19,322 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:25:19,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 06:25:19,653 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 100 statements into 2 equivalence classes. [2025-02-08 06:25:19,760 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 100 of 100 statements. [2025-02-08 06:25:19,760 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:25:19,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:25:19,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 95 conjuncts are in the unsatisfiable core [2025-02-08 06:25:19,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:25:19,814 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 [2025-02-08 06:25:20,632 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:25:20,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:25:20,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-08 06:25:20,716 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-02-08 06:25:20,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-02-08 06:25:20,818 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:25:21,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:25:21,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-08 06:25:21,070 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2025-02-08 06:25:21,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2025-02-08 06:25:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 288 proven. 130 refuted. 0 times theorem prover too weak. 111 trivial. 137 not checked. [2025-02-08 06:25:21,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:25:21,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304853751] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:25:21,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:25:21,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 27] total 39 [2025-02-08 06:25:21,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259529209] [2025-02-08 06:25:21,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:25:21,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-02-08 06:25:21,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:25:21,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-02-08 06:25:21,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1384, Unknown=2, NotChecked=150, Total=1640 [2025-02-08 06:25:21,434 INFO L87 Difference]: Start difference. First operand 226 states and 246 transitions. Second operand has 39 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 36 states have internal predecessors, (79), 3 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9)