./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0235-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc 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-0235-1.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 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:17:37,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:17:37,655 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 10:17:37,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:17:37,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:17:37,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:17:37,693 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:17:37,693 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:17:37,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:17:37,694 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:17:37,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:17:37,694 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:17:37,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:17:37,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:17:37,695 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:17:37,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:17:37,696 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:17:37,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:17:37,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:17:37,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:17:37,696 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:17:37,696 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:17:37,696 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:17:37,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:17:37,697 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:17:37,697 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:17:37,697 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:17:37,697 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:17:37,697 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:17:37,697 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:17:37,697 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:17:37,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:17:37,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:17:37,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:17:37,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:17:37,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:17:37,699 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:17:37,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:17:37,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:17:37,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:17:37,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:17:37,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:17:37,699 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 -> 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a [2025-02-06 10:17:37,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:17:38,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:17:38,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:17:38,010 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:17:38,010 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:17:38,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0235-1.i [2025-02-06 10:17:39,313 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e71d03a1c/57dd64985c4c4fdabac8976b123ded79/FLAG1f9af94ab [2025-02-06 10:17:39,607 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:17:39,608 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-1.i [2025-02-06 10:17:39,623 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e71d03a1c/57dd64985c4c4fdabac8976b123ded79/FLAG1f9af94ab [2025-02-06 10:17:39,886 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e71d03a1c/57dd64985c4c4fdabac8976b123ded79 [2025-02-06 10:17:39,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:17:39,889 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:17:39,890 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:17:39,890 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:17:39,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:17:39,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:17:39" (1/1) ... [2025-02-06 10:17:39,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20267dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:39, skipping insertion in model container [2025-02-06 10:17:39,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:17:39" (1/1) ... [2025-02-06 10:17:39,919 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:17:40,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:17:40,264 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:17:40,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:17:40,341 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:17:40,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:40 WrapperNode [2025-02-06 10:17:40,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:17:40,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:17:40,342 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:17:40,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:17:40,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:40" (1/1) ... [2025-02-06 10:17:40,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:40" (1/1) ... [2025-02-06 10:17:40,381 INFO L138 Inliner]: procedures = 188, calls = 69, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 230 [2025-02-06 10:17:40,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:17:40,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:17:40,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:17:40,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:17:40,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:40" (1/1) ... [2025-02-06 10:17:40,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:40" (1/1) ... [2025-02-06 10:17:40,395 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:40" (1/1) ... [2025-02-06 10:17:40,424 INFO L175 MemorySlicer]: Split 37 memory accesses to 3 slices as follows [2, 9, 26]. 70 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 13 writes are split as follows [0, 1, 12]. [2025-02-06 10:17:40,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:40" (1/1) ... [2025-02-06 10:17:40,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:40" (1/1) ... [2025-02-06 10:17:40,436 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:40" (1/1) ... [2025-02-06 10:17:40,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:40" (1/1) ... [2025-02-06 10:17:40,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:40" (1/1) ... [2025-02-06 10:17:40,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:40" (1/1) ... [2025-02-06 10:17:40,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:17:40,443 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:17:40,443 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:17:40,443 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:17:40,448 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:40" (1/1) ... [2025-02-06 10:17:40,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:17:40,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:40,481 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) [2025-02-06 10:17:40,484 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 [2025-02-06 10:17:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 10:17:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 10:17:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 10:17:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 10:17:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 10:17:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 10:17:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 10:17:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 10:17:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2025-02-06 10:17:40,503 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2025-02-06 10:17:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:17:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 10:17:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 10:17:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-06 10:17:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2025-02-06 10:17:40,504 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2025-02-06 10:17:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 10:17:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 10:17:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 10:17:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:17:40,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:17:40,627 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:17:40,629 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:17:40,910 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L642: havoc calloc_model_#t~memset~res4#1.base, calloc_model_#t~memset~res4#1.offset; [2025-02-06 10:17:41,091 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L786: havoc main_#t~mem37#1.base, main_#t~mem37#1.offset; [2025-02-06 10:17:41,134 INFO L? ?]: Removed 203 outVars from TransFormulas that were not future-live. [2025-02-06 10:17:41,134 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:17:41,152 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:17:41,155 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:17:41,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:17:41 BoogieIcfgContainer [2025-02-06 10:17:41,155 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:17:41,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:17:41,157 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:17:41,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:17:41,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:17:39" (1/3) ... [2025-02-06 10:17:41,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bae2237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:17:41, skipping insertion in model container [2025-02-06 10:17:41,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:40" (2/3) ... [2025-02-06 10:17:41,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bae2237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:17:41, skipping insertion in model container [2025-02-06 10:17:41,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:17:41" (3/3) ... [2025-02-06 10:17:41,164 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2025-02-06 10:17:41,179 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:17:41,182 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0235-1.i that has 3 procedures, 233 locations, 1 initial locations, 11 loop locations, and 85 error locations. [2025-02-06 10:17:41,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:17:41,249 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;@2aa1cad0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:17:41,250 INFO L334 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2025-02-06 10:17:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 134 states have (on average 1.873134328358209) internal successors, (251), 219 states have internal predecessors, (251), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-06 10:17:41,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 10:17:41,260 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:41,260 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 10:17:41,262 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-06 10:17:41,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:41,269 INFO L85 PathProgramCache]: Analyzing trace with hash 9110949, now seen corresponding path program 1 times [2025-02-06 10:17:41,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:41,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77286053] [2025-02-06 10:17:41,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:41,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:41,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 10:17:41,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 10:17:41,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:41,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:17:41,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:41,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77286053] [2025-02-06 10:17:41,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77286053] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:17:41,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:17:41,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:17:41,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738196356] [2025-02-06 10:17:41,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:17:41,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 10:17:41,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:41,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 10:17:41,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 10:17:41,416 INFO L87 Difference]: Start difference. First operand has 233 states, 134 states have (on average 1.873134328358209) internal successors, (251), 219 states have internal predecessors, (251), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:17:41,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:41,440 INFO L93 Difference]: Finished difference Result 233 states and 262 transitions. [2025-02-06 10:17:41,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 10:17:41,443 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-02-06 10:17:41,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:41,449 INFO L225 Difference]: With dead ends: 233 [2025-02-06 10:17:41,450 INFO L226 Difference]: Without dead ends: 231 [2025-02-06 10:17:41,451 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 [2025-02-06 10:17:41,453 INFO L435 NwaCegarLoop]: 262 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, 262 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 [2025-02-06 10:17:41,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:17:41,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-02-06 10:17:41,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2025-02-06 10:17:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 217 states have internal predecessors, (238), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-06 10:17:41,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 260 transitions. [2025-02-06 10:17:41,508 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 260 transitions. Word has length 4 [2025-02-06 10:17:41,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:41,509 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 260 transitions. [2025-02-06 10:17:41,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:17:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 260 transitions. [2025-02-06 10:17:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 10:17:41,509 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:41,510 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 10:17:41,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 10:17:41,512 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-06 10:17:41,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:41,512 INFO L85 PathProgramCache]: Analyzing trace with hash 165772600, now seen corresponding path program 1 times [2025-02-06 10:17:41,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:41,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772772191] [2025-02-06 10:17:41,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:41,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:41,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 10:17:41,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 10:17:41,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:41,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:17:41,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:41,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772772191] [2025-02-06 10:17:41,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772772191] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:17:41,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:17:41,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:17:41,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097204790] [2025-02-06 10:17:41,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:17:41,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:17:41,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:41,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:17:41,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:17:41,663 INFO L87 Difference]: Start difference. First operand 231 states and 260 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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) [2025-02-06 10:17:41,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:41,838 INFO L93 Difference]: Finished difference Result 230 states and 259 transitions. [2025-02-06 10:17:41,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:17:41,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2025-02-06 10:17:41,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:41,840 INFO L225 Difference]: With dead ends: 230 [2025-02-06 10:17:41,840 INFO L226 Difference]: Without dead ends: 230 [2025-02-06 10:17:41,840 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 [2025-02-06 10:17:41,841 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 4 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:17:41,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 427 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:17:41,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-02-06 10:17:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2025-02-06 10:17:41,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 133 states have (on average 1.781954887218045) internal successors, (237), 216 states have internal predecessors, (237), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-06 10:17:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 259 transitions. [2025-02-06 10:17:41,862 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 259 transitions. Word has length 6 [2025-02-06 10:17:41,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:41,862 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 259 transitions. [2025-02-06 10:17:41,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2025-02-06 10:17:41,863 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 259 transitions. [2025-02-06 10:17:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 10:17:41,863 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:41,863 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:17:41,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 10:17:41,863 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-06 10:17:41,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:41,864 INFO L85 PathProgramCache]: Analyzing trace with hash 843983410, now seen corresponding path program 1 times [2025-02-06 10:17:41,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:41,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276320923] [2025-02-06 10:17:41,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:41,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:41,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 10:17:41,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 10:17:41,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:41,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 10:17:41,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747226329] [2025-02-06 10:17:41,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:41,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:17:41,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:41,912 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) [2025-02-06 10:17:41,914 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 [2025-02-06 10:17:41,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 10:17:41,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 10:17:41,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:41,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:42,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:17:42,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:17:42,071 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 [2025-02-06 10:17:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:17:42,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:17:42,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:42,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276320923] [2025-02-06 10:17:42,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 10:17:42,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747226329] [2025-02-06 10:17:42,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747226329] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:17:42,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:17:42,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:17:42,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531887629] [2025-02-06 10:17:42,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:17:42,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:17:42,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:42,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:17:42,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:17:42,096 INFO L87 Difference]: Start difference. First operand 230 states and 259 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-02-06 10:17:42,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:42,260 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2025-02-06 10:17:42,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:17:42,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2025-02-06 10:17:42,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:42,263 INFO L225 Difference]: With dead ends: 239 [2025-02-06 10:17:42,263 INFO L226 Difference]: Without dead ends: 239 [2025-02-06 10:17:42,263 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:17:42,264 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 11 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:17:42,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 678 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:17:42,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2025-02-06 10:17:42,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2025-02-06 10:17:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 141 states have (on average 1.7446808510638299) internal successors, (246), 224 states have internal predecessors, (246), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-06 10:17:42,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 268 transitions. [2025-02-06 10:17:42,288 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 268 transitions. Word has length 7 [2025-02-06 10:17:42,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:42,288 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 268 transitions. [2025-02-06 10:17:42,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-02-06 10:17:42,289 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 268 transitions. [2025-02-06 10:17:42,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-06 10:17:42,290 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:42,290 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, 1] [2025-02-06 10:17:42,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 10:17:42,494 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 [2025-02-06 10:17:42,494 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-06 10:17:42,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:42,495 INFO L85 PathProgramCache]: Analyzing trace with hash 95361678, now seen corresponding path program 1 times [2025-02-06 10:17:42,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:42,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819303292] [2025-02-06 10:17:42,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:42,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:42,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-06 10:17:42,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-06 10:17:42,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:42,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 10:17:42,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817355012] [2025-02-06 10:17:42,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:42,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:17:42,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:42,630 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) [2025-02-06 10:17:42,635 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 [2025-02-06 10:17:42,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-06 10:17:42,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-06 10:17:42,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:42,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:42,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-06 10:17:42,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:17:42,848 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 [2025-02-06 10:17:42,896 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 [2025-02-06 10:17:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-06 10:17:42,984 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:17:42,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:42,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819303292] [2025-02-06 10:17:42,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 10:17:42,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817355012] [2025-02-06 10:17:42,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817355012] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:17:42,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:17:42,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:17:42,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912456160] [2025-02-06 10:17:42,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:17:42,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:17:42,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:42,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:17:42,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:17:42,988 INFO L87 Difference]: Start difference. First operand 239 states and 268 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2025-02-06 10:17:43,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:43,141 INFO L93 Difference]: Finished difference Result 251 states and 280 transitions. [2025-02-06 10:17:43,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:17:43,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 66 [2025-02-06 10:17:43,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:43,143 INFO L225 Difference]: With dead ends: 251 [2025-02-06 10:17:43,143 INFO L226 Difference]: Without dead ends: 241 [2025-02-06 10:17:43,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:17:43,144 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 3 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:17:43,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 928 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:17:43,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2025-02-06 10:17:43,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2025-02-06 10:17:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 143 states have (on average 1.7342657342657342) internal successors, (248), 226 states have internal predecessors, (248), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-06 10:17:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 270 transitions. [2025-02-06 10:17:43,154 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 270 transitions. Word has length 66 [2025-02-06 10:17:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:43,155 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 270 transitions. [2025-02-06 10:17:43,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2025-02-06 10:17:43,155 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 270 transitions. [2025-02-06 10:17:43,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-02-06 10:17:43,156 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:43,156 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 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, 1] [2025-02-06 10:17:43,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 10:17:43,357 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 [2025-02-06 10:17:43,357 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-06 10:17:43,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:43,358 INFO L85 PathProgramCache]: Analyzing trace with hash 437743342, now seen corresponding path program 1 times [2025-02-06 10:17:43,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:43,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953113091] [2025-02-06 10:17:43,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:43,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:43,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-02-06 10:17:43,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-02-06 10:17:43,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:43,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 10:17:43,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062508491] [2025-02-06 10:17:43,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:43,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:17:43,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:43,646 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) [2025-02-06 10:17:43,649 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 [2025-02-06 10:17:43,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-02-06 10:17:43,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-02-06 10:17:43,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:43,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:43,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:17:43,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:17:43,904 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 [2025-02-06 10:17:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2025-02-06 10:17:43,927 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:17:43,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:43,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953113091] [2025-02-06 10:17:43,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 10:17:43,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062508491] [2025-02-06 10:17:43,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062508491] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:17:43,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:17:43,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:17:43,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945304177] [2025-02-06 10:17:43,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:17:43,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:17:43,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:43,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:17:43,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:17:43,930 INFO L87 Difference]: Start difference. First operand 241 states and 270 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2025-02-06 10:17:44,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:44,057 INFO L93 Difference]: Finished difference Result 240 states and 269 transitions. [2025-02-06 10:17:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:17:44,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 71 [2025-02-06 10:17:44,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:44,059 INFO L225 Difference]: With dead ends: 240 [2025-02-06 10:17:44,059 INFO L226 Difference]: Without dead ends: 240 [2025-02-06 10:17:44,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:17:44,060 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 11 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 700 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 [2025-02-06 10:17:44,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 700 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:17:44,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2025-02-06 10:17:44,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2025-02-06 10:17:44,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 143 states have (on average 1.7272727272727273) internal successors, (247), 225 states have internal predecessors, (247), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-06 10:17:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 269 transitions. [2025-02-06 10:17:44,071 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 269 transitions. Word has length 71 [2025-02-06 10:17:44,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:44,071 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 269 transitions. [2025-02-06 10:17:44,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2025-02-06 10:17:44,072 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 269 transitions. [2025-02-06 10:17:44,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-06 10:17:44,073 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:44,073 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 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] [2025-02-06 10:17:44,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 10:17:44,274 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 [2025-02-06 10:17:44,274 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-06 10:17:44,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:44,275 INFO L85 PathProgramCache]: Analyzing trace with hash -305965260, now seen corresponding path program 1 times [2025-02-06 10:17:44,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:44,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353016635] [2025-02-06 10:17:44,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:44,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:44,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-06 10:17:44,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-06 10:17:44,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:44,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 93 proven. 11 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-02-06 10:17:45,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:45,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353016635] [2025-02-06 10:17:45,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353016635] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:17:45,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821826561] [2025-02-06 10:17:45,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:45,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:17:45,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:45,029 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) [2025-02-06 10:17:45,031 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 [2025-02-06 10:17:45,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-06 10:17:45,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-06 10:17:45,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:45,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:45,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 10:17:45,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:17:45,339 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 [2025-02-06 10:17:45,383 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-06 10:17:45,384 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 [2025-02-06 10:17:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 93 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 10 not checked. [2025-02-06 10:17:45,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:17:45,662 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 10:17:45,663 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 [2025-02-06 10:17:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 93 proven. 11 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-02-06 10:17:45,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821826561] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:17:45,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:17:45,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2025-02-06 10:17:45,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037367313] [2025-02-06 10:17:45,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:17:45,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 10:17:45,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:45,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 10:17:45,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=199, Unknown=1, NotChecked=28, Total=272 [2025-02-06 10:17:45,692 INFO L87 Difference]: Start difference. First operand 240 states and 269 transitions. Second operand has 17 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 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) [2025-02-06 10:17:46,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:46,553 INFO L93 Difference]: Finished difference Result 344 states and 392 transitions. [2025-02-06 10:17:46,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:17:46,554 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 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 79 [2025-02-06 10:17:46,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:46,558 INFO L225 Difference]: With dead ends: 344 [2025-02-06 10:17:46,558 INFO L226 Difference]: Without dead ends: 344 [2025-02-06 10:17:46,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 149 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=311, Unknown=1, NotChecked=36, Total=420 [2025-02-06 10:17:46,560 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 358 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 373 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:17:46,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 2081 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1157 Invalid, 0 Unknown, 373 Unchecked, 0.7s Time] [2025-02-06 10:17:46,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2025-02-06 10:17:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 238. [2025-02-06 10:17:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 143 states have (on average 1.7132867132867133) internal successors, (245), 223 states have internal predecessors, (245), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-06 10:17:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 267 transitions. [2025-02-06 10:17:46,570 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 267 transitions. Word has length 79 [2025-02-06 10:17:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:46,571 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 267 transitions. [2025-02-06 10:17:46,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 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) [2025-02-06 10:17:46,571 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 267 transitions. [2025-02-06 10:17:46,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-06 10:17:46,573 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:46,573 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 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] [2025-02-06 10:17:46,582 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 [2025-02-06 10:17:46,773 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 [2025-02-06 10:17:46,774 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-06 10:17:46,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:46,774 INFO L85 PathProgramCache]: Analyzing trace with hash -305965259, now seen corresponding path program 1 times [2025-02-06 10:17:46,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:46,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266810651] [2025-02-06 10:17:46,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:46,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:46,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-06 10:17:46,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-06 10:17:46,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:46,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 10:17:46,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117079784] [2025-02-06 10:17:46,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:46,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:17:46,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:46,921 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) [2025-02-06 10:17:46,924 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 [2025-02-06 10:17:47,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-06 10:17:47,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-06 10:17:47,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:47,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:47,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-02-06 10:17:47,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:17:47,192 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 [2025-02-06 10:17:47,481 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 [2025-02-06 10:17:47,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:17:47,536 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 [2025-02-06 10:17:47,546 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:17:47,547 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 [2025-02-06 10:17:47,563 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 11 not checked. [2025-02-06 10:17:47,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:17:47,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:47,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266810651] [2025-02-06 10:17:47,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 10:17:47,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117079784] [2025-02-06 10:17:47,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117079784] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:17:47,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:17:47,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-02-06 10:17:47,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215188359] [2025-02-06 10:17:47,673 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 10:17:47,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:17:47,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:47,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:17:47,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=153, Unknown=1, NotChecked=24, Total=210 [2025-02-06 10:17:47,674 INFO L87 Difference]: Start difference. First operand 238 states and 267 transitions. Second operand has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 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) [2025-02-06 10:17:49,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:49,374 INFO L93 Difference]: Finished difference Result 342 states and 390 transitions. [2025-02-06 10:17:49,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:17:49,374 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 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 79 [2025-02-06 10:17:49,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:49,377 INFO L225 Difference]: With dead ends: 342 [2025-02-06 10:17:49,378 INFO L226 Difference]: Without dead ends: 342 [2025-02-06 10:17:49,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=328, Unknown=1, NotChecked=36, Total=420 [2025-02-06 10:17:49,379 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 125 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 370 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 10:17:49,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 569 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2176 Invalid, 0 Unknown, 370 Unchecked, 1.5s Time] [2025-02-06 10:17:49,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2025-02-06 10:17:49,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 236. [2025-02-06 10:17:49,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 143 states have (on average 1.6993006993006994) internal successors, (243), 221 states have internal predecessors, (243), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-06 10:17:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 265 transitions. [2025-02-06 10:17:49,387 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 265 transitions. Word has length 79 [2025-02-06 10:17:49,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:49,389 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 265 transitions. [2025-02-06 10:17:49,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 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) [2025-02-06 10:17:49,390 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 265 transitions. [2025-02-06 10:17:49,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-02-06 10:17:49,393 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:49,393 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 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] [2025-02-06 10:17:49,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 10:17:49,593 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 [2025-02-06 10:17:49,594 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-06 10:17:49,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:49,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1974832015, now seen corresponding path program 1 times [2025-02-06 10:17:49,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:49,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023591] [2025-02-06 10:17:49,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:49,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:49,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-02-06 10:17:49,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-02-06 10:17:49,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:49,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:50,237 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 114 proven. 26 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 10:17:50,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:50,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023591] [2025-02-06 10:17:50,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023591] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:17:50,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470450853] [2025-02-06 10:17:50,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:50,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:17:50,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:50,240 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) [2025-02-06 10:17:50,242 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 [2025-02-06 10:17:50,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-02-06 10:17:50,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-02-06 10:17:50,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:50,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:50,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-06 10:17:50,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:17:50,516 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 [2025-02-06 10:17:50,577 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-02-06 10:17:50,577 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 [2025-02-06 10:17:50,612 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 [2025-02-06 10:17:50,638 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-06 10:17:50,639 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 [2025-02-06 10:17:50,659 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 107 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 32 not checked. [2025-02-06 10:17:50,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:17:50,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470450853] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:17:50,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:17:50,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 17 [2025-02-06 10:17:50,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639740004] [2025-02-06 10:17:50,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:17:50,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 10:17:50,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:50,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 10:17:50,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=290, Unknown=2, NotChecked=70, Total=420 [2025-02-06 10:17:50,910 INFO L87 Difference]: Start difference. First operand 236 states and 265 transitions. Second operand has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 16 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-06 10:17:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:51,840 INFO L93 Difference]: Finished difference Result 339 states and 387 transitions. [2025-02-06 10:17:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 10:17:51,841 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 16 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2025-02-06 10:17:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:51,842 INFO L225 Difference]: With dead ends: 339 [2025-02-06 10:17:51,842 INFO L226 Difference]: Without dead ends: 339 [2025-02-06 10:17:51,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=463, Unknown=2, NotChecked=90, Total=650 [2025-02-06 10:17:51,843 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 376 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 735 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:17:51,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 2142 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1261 Invalid, 0 Unknown, 735 Unchecked, 0.7s Time] [2025-02-06 10:17:51,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2025-02-06 10:17:51,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 233. [2025-02-06 10:17:51,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 143 states have (on average 1.6783216783216783) internal successors, (240), 218 states have internal predecessors, (240), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-06 10:17:51,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 262 transitions. [2025-02-06 10:17:51,851 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 262 transitions. Word has length 81 [2025-02-06 10:17:51,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:51,852 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 262 transitions. [2025-02-06 10:17:51,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 16 states have internal predecessors, (71), 2 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-06 10:17:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 262 transitions. [2025-02-06 10:17:51,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-02-06 10:17:51,853 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:51,853 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 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] [2025-02-06 10:17:51,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 10:17:52,053 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 [2025-02-06 10:17:52,054 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-06 10:17:52,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:52,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1974832014, now seen corresponding path program 1 times [2025-02-06 10:17:52,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:52,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118053159] [2025-02-06 10:17:52,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:52,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:52,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-02-06 10:17:52,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-02-06 10:17:52,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:52,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 93 proven. 12 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-02-06 10:17:53,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:53,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118053159] [2025-02-06 10:17:53,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118053159] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:17:53,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970398646] [2025-02-06 10:17:53,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:53,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:17:53,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:53,181 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) [2025-02-06 10:17:53,183 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 [2025-02-06 10:17:53,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-02-06 10:17:53,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-02-06 10:17:53,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:53,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:53,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-02-06 10:17:53,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:17:53,494 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 [2025-02-06 10:18:00,522 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 [2025-02-06 10:18:00,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:18:00,581 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 [2025-02-06 10:18:00,593 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:18:00,593 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 [2025-02-06 10:18:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 90 proven. 9 refuted. 0 times theorem prover too weak. 74 trivial. 13 not checked. [2025-02-06 10:18:00,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:18:00,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970398646] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:18:00,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:18:00,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2025-02-06 10:18:00,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066750973] [2025-02-06 10:18:00,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:18:00,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-06 10:18:00,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:18:00,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-06 10:18:00,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=734, Unknown=2, NotChecked=54, Total=870 [2025-02-06 10:18:00,778 INFO L87 Difference]: Start difference. First operand 233 states and 262 transitions. Second operand has 28 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 23 states have internal predecessors, (64), 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) [2025-02-06 10:18:04,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-06 10:18:09,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-06 10:18:14,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-06 10:18:18,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-06 10:18:26,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:18:26,398 INFO L93 Difference]: Finished difference Result 354 states and 409 transitions. [2025-02-06 10:18:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 10:18:26,399 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 23 states have internal predecessors, (64), 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 81 [2025-02-06 10:18:26,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:18:26,401 INFO L225 Difference]: With dead ends: 354 [2025-02-06 10:18:26,401 INFO L226 Difference]: Without dead ends: 351 [2025-02-06 10:18:26,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=141, Invalid=1193, Unknown=2, NotChecked=70, Total=1406 [2025-02-06 10:18:26,402 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 366 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 3207 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 3610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3207 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 377 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:18:26,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 935 Invalid, 3610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3207 Invalid, 4 Unknown, 377 Unchecked, 24.3s Time] [2025-02-06 10:18:26,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2025-02-06 10:18:26,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 239. [2025-02-06 10:18:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 148 states have (on average 1.662162162162162) internal successors, (246), 224 states have internal predecessors, (246), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2025-02-06 10:18:26,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 272 transitions. [2025-02-06 10:18:26,418 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 272 transitions. Word has length 81 [2025-02-06 10:18:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:18:26,419 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 272 transitions. [2025-02-06 10:18:26,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 23 states have internal predecessors, (64), 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) [2025-02-06 10:18:26,419 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 272 transitions. [2025-02-06 10:18:26,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-02-06 10:18:26,421 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:18:26,421 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 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] [2025-02-06 10:18:26,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 10:18:26,622 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 [2025-02-06 10:18:26,622 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-06 10:18:26,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:18:26,622 INFO L85 PathProgramCache]: Analyzing trace with hash 2061207094, now seen corresponding path program 2 times [2025-02-06 10:18:26,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:18:26,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294761266] [2025-02-06 10:18:26,623 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:18:26,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:18:26,644 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 82 statements into 2 equivalence classes. [2025-02-06 10:18:26,726 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 82 of 82 statements. [2025-02-06 10:18:26,726 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:18:26,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:18:29,225 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 101 proven. 16 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-02-06 10:18:29,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:18:29,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294761266] [2025-02-06 10:18:29,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294761266] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:18:29,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716796710] [2025-02-06 10:18:29,226 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:18:29,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:18:29,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:18:29,228 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) [2025-02-06 10:18:29,229 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 [2025-02-06 10:18:29,361 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 82 statements into 2 equivalence classes. [2025-02-06 10:18:29,588 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 82 of 82 statements. [2025-02-06 10:18:29,588 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:18:29,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:18:29,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-02-06 10:18:29,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:18:29,618 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 [2025-02-06 10:18:32,021 WARN L873 $PredicateComparison]: unable to prove that (and (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))) (exists ((|v_zalloc_or_die_calloc_model_~size#1_132| Int) (|v_zalloc_or_die_calloc_model_~nmemb#1_132| Int)) (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| (* |v_zalloc_or_die_calloc_model_~size#1_132| |v_zalloc_or_die_calloc_model_~nmemb#1_132|)))) is different from true [2025-02-06 10:18:32,341 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 [2025-02-06 10:18:32,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:18:32,399 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 [2025-02-06 10:18:32,416 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:18:32,416 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 [2025-02-06 10:18:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 101 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 7 not checked. [2025-02-06 10:18:32,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:18:33,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716796710] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:18:33,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:18:33,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 32 [2025-02-06 10:18:33,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785708835] [2025-02-06 10:18:33,013 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:18:33,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-06 10:18:33,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:18:33,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-06 10:18:33,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=909, Unknown=2, NotChecked=122, Total=1122 [2025-02-06 10:18:33,016 INFO L87 Difference]: Start difference. First operand 239 states and 272 transitions. Second operand has 32 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 27 states have internal predecessors, (64), 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) [2025-02-06 10:18:46,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:18:46,334 INFO L93 Difference]: Finished difference Result 366 states and 427 transitions. [2025-02-06 10:18:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 10:18:46,334 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 27 states have internal predecessors, (64), 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 82 [2025-02-06 10:18:46,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:18:46,336 INFO L225 Difference]: With dead ends: 366 [2025-02-06 10:18:46,336 INFO L226 Difference]: Without dead ends: 363 [2025-02-06 10:18:46,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=169, Invalid=1729, Unknown=2, NotChecked=170, Total=2070 [2025-02-06 10:18:46,337 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 253 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 4761 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 5579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 803 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:18:46,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1245 Invalid, 5579 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 4761 Invalid, 0 Unknown, 803 Unchecked, 11.7s Time] [2025-02-06 10:18:46,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2025-02-06 10:18:46,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 240. [2025-02-06 10:18:46,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 149 states have (on average 1.6644295302013423) internal successors, (248), 225 states have internal predecessors, (248), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2025-02-06 10:18:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 274 transitions. [2025-02-06 10:18:46,350 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 274 transitions. Word has length 82 [2025-02-06 10:18:46,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:18:46,351 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 274 transitions. [2025-02-06 10:18:46,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 27 states have internal predecessors, (64), 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) [2025-02-06 10:18:46,351 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 274 transitions. [2025-02-06 10:18:46,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-06 10:18:46,352 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:18:46,352 INFO L218 NwaCegarLoop]: trace histogram [8, 6, 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] [2025-02-06 10:18:46,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 10:18:46,552 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 [2025-02-06 10:18:46,552 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-06 10:18:46,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:18:46,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1670599438, now seen corresponding path program 3 times [2025-02-06 10:18:46,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:18:46,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327060483] [2025-02-06 10:18:46,553 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:18:46,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:18:46,574 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 83 statements into 8 equivalence classes. [2025-02-06 10:18:46,618 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 56 of 83 statements. [2025-02-06 10:18:46,619 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-06 10:18:46,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:18:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 109 proven. 21 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-02-06 10:18:48,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:18:48,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327060483] [2025-02-06 10:18:48,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327060483] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:18:48,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668212727] [2025-02-06 10:18:48,497 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:18:48,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:18:48,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:18:48,499 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) [2025-02-06 10:18:48,501 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 [2025-02-06 10:18:48,636 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 83 statements into 8 equivalence classes. [2025-02-06 10:18:48,757 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 28 of 83 statements. [2025-02-06 10:18:48,757 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:18:48,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:18:48,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 10:18:48,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:18:48,791 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 [2025-02-06 10:18:49,014 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 [2025-02-06 10:18:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2025-02-06 10:18:49,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:18:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2025-02-06 10:18:50,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668212727] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:18:50,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:18:50,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6, 6] total 25 [2025-02-06 10:18:50,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341000550] [2025-02-06 10:18:50,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:18:50,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 10:18:50,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:18:50,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 10:18:50,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:18:50,442 INFO L87 Difference]: Start difference. First operand 240 states and 274 transitions. Second operand has 25 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 22 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-06 10:19:03,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:19:03,567 INFO L93 Difference]: Finished difference Result 380 states and 439 transitions. [2025-02-06 10:19:03,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-06 10:19:03,567 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 22 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2025-02-06 10:19:03,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:19:03,569 INFO L225 Difference]: With dead ends: 380 [2025-02-06 10:19:03,569 INFO L226 Difference]: Without dead ends: 357 [2025-02-06 10:19:03,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=364, Invalid=1892, Unknown=0, NotChecked=0, Total=2256 [2025-02-06 10:19:03,570 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 399 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 3281 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:19:03,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1038 Invalid, 3335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3281 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2025-02-06 10:19:03,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2025-02-06 10:19:03,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 246. [2025-02-06 10:19:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 155 states have (on average 1.6387096774193548) internal successors, (254), 231 states have internal predecessors, (254), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2025-02-06 10:19:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 280 transitions. [2025-02-06 10:19:03,582 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 280 transitions. Word has length 83 [2025-02-06 10:19:03,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:19:03,582 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 280 transitions. [2025-02-06 10:19:03,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 22 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-06 10:19:03,582 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 280 transitions. [2025-02-06 10:19:03,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-06 10:19:03,583 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:19:03,583 INFO L218 NwaCegarLoop]: trace histogram [18, 6, 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] [2025-02-06 10:19:03,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 10:19:03,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:19:03,784 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-06 10:19:03,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:19:03,785 INFO L85 PathProgramCache]: Analyzing trace with hash -287897954, now seen corresponding path program 4 times [2025-02-06 10:19:03,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:19:03,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580884276] [2025-02-06 10:19:03,785 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:19:03,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:19:03,812 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 93 statements into 2 equivalence classes. [2025-02-06 10:19:03,872 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 10:19:03,872 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:19:03,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:19:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 205 proven. 52 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2025-02-06 10:19:05,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:19:05,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580884276] [2025-02-06 10:19:05,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580884276] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:19:05,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077779371] [2025-02-06 10:19:05,958 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:19:05,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:19:05,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:19:05,960 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) [2025-02-06 10:19:05,961 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 [2025-02-06 10:19:06,113 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 93 statements into 2 equivalence classes. [2025-02-06 10:19:06,328 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 10:19:06,328 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:19:06,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:19:06,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 80 conjuncts are in the unsatisfiable core [2025-02-06 10:19:06,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:19:06,612 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 [2025-02-06 10:19:06,638 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