./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 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-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-?-48c9605-m [2025-02-08 06:22:41,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 06:22:41,342 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 06:22:41,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 06:22:41,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 06:22:41,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 06:22:41,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 06:22:41,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 06:22:41,365 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 06:22:41,365 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 06:22:41,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 06:22:41,365 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 06:22:41,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 06:22:41,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 06:22:41,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 06:22:41,366 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 06:22:41,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:22:41,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 06:22:41,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 06:22:41,367 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 06:22:41,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 06:22:41,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 06:22:41,367 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 06:22:41,367 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 06:22:41,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 06:22:41,367 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 [2025-02-08 06:22:41,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 06:22:41,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 06:22:41,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 06:22:41,644 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 06:22:41,644 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 06:22:41,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0235-1.i [2025-02-08 06:22:42,771 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d7b52c8e4/935f2681e8f0450da917b5a54baf66fe/FLAG4c05b9d9a [2025-02-08 06:22:43,072 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 06:22:43,072 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-1.i [2025-02-08 06:22:43,087 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d7b52c8e4/935f2681e8f0450da917b5a54baf66fe/FLAG4c05b9d9a [2025-02-08 06:22:43,357 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d7b52c8e4/935f2681e8f0450da917b5a54baf66fe [2025-02-08 06:22:43,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 06:22:43,360 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 06:22:43,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 06:22:43,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 06:22:43,364 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 06:22:43,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:22:43" (1/1) ... [2025-02-08 06:22:43,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106a80ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43, skipping insertion in model container [2025-02-08 06:22:43,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:22:43" (1/1) ... [2025-02-08 06:22:43,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 06:22:43,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:22:43,648 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 06:22:43,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:22:43,704 INFO L204 MainTranslator]: Completed translation [2025-02-08 06:22:43,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43 WrapperNode [2025-02-08 06:22:43,705 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 06:22:43,706 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 06:22:43,706 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 06:22:43,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 06:22:43,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43" (1/1) ... [2025-02-08 06:22:43,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43" (1/1) ... [2025-02-08 06:22:43,736 INFO L138 Inliner]: procedures = 188, calls = 69, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 230 [2025-02-08 06:22:43,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 06:22:43,736 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 06:22:43,737 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 06:22:43,737 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 06:22:43,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43" (1/1) ... [2025-02-08 06:22:43,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43" (1/1) ... [2025-02-08 06:22:43,745 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43" (1/1) ... [2025-02-08 06:22:43,764 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]. [2025-02-08 06:22:43,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43" (1/1) ... [2025-02-08 06:22:43,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43" (1/1) ... [2025-02-08 06:22:43,772 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43" (1/1) ... [2025-02-08 06:22:43,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43" (1/1) ... [2025-02-08 06:22:43,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43" (1/1) ... [2025-02-08 06:22:43,774 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43" (1/1) ... [2025-02-08 06:22:43,776 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 06:22:43,777 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 06:22:43,777 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 06:22:43,777 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 06:22:43,777 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43" (1/1) ... [2025-02-08 06:22:43,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:22:43,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:43,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 06:22:43,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 06:22:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 06:22:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 06:22:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 06:22:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 06:22:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 06:22:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 06:22:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 06:22:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 06:22:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2025-02-08 06:22:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2025-02-08 06:22:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 06:22:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 06:22:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 06:22:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 06:22:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2025-02-08 06:22:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2025-02-08 06:22:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 06:22:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 06:22:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 06:22:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 06:22:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 06:22:43,997 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 06:22:43,999 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 06:22:44,434 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L642: havoc calloc_model_#t~memset~res4#1.base, calloc_model_#t~memset~res4#1.offset; [2025-02-08 06:22:44,579 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L786: havoc main_#t~mem37#1.base, main_#t~mem37#1.offset; [2025-02-08 06:22:44,602 INFO L? ?]: Removed 201 outVars from TransFormulas that were not future-live. [2025-02-08 06:22:44,603 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 06:22:44,612 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 06:22:44,612 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 06:22:44,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:22:44 BoogieIcfgContainer [2025-02-08 06:22:44,612 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 06:22:44,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 06:22:44,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 06:22:44,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 06:22:44,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 06:22:43" (1/3) ... [2025-02-08 06:22:44,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e47291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:22:44, skipping insertion in model container [2025-02-08 06:22:44,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:43" (2/3) ... [2025-02-08 06:22:44,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e47291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:22:44, skipping insertion in model container [2025-02-08 06:22:44,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:22:44" (3/3) ... [2025-02-08 06:22:44,619 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2025-02-08 06:22:44,628 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 06:22:44,629 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0235-1.i that has 3 procedures, 231 locations, 1 initial locations, 11 loop locations, and 85 error locations. [2025-02-08 06:22:44,691 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 06:22:44,706 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;@2f7d7d70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 06:22:44,706 INFO L334 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2025-02-08 06:22:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 132 states have (on average 1.8863636363636365) internal successors, (249), 217 states have internal predecessors, (249), 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) [2025-02-08 06:22:44,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 06:22:44,716 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:44,716 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 06:22:44,717 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)] === [2025-02-08 06:22:44,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:44,720 INFO L85 PathProgramCache]: Analyzing trace with hash 291820, now seen corresponding path program 1 times [2025-02-08 06:22:44,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:44,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237105958] [2025-02-08 06:22:44,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:44,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:44,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 06:22:44,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 06:22:44,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:44,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:22:44,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:44,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237105958] [2025-02-08 06:22:44,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237105958] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:22:44,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:22:44,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:22:44,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79560868] [2025-02-08 06:22:44,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:22:44,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 06:22:44,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:44,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 06:22:44,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 06:22:44,824 INFO L87 Difference]: Start difference. First operand has 231 states, 132 states have (on average 1.8863636363636365) internal successors, (249), 217 states have internal predecessors, (249), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:22:44,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:44,862 INFO L93 Difference]: Finished difference Result 231 states and 260 transitions. [2025-02-08 06:22:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 06:22:44,864 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-02-08 06:22:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:44,870 INFO L225 Difference]: With dead ends: 231 [2025-02-08 06:22:44,871 INFO L226 Difference]: Without dead ends: 229 [2025-02-08 06:22:44,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 06:22:44,874 INFO L435 NwaCegarLoop]: 260 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, 260 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:44,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:22:44,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-02-08 06:22:44,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2025-02-08 06:22:44,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 131 states have (on average 1.8015267175572518) internal successors, (236), 215 states have internal predecessors, (236), 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) [2025-02-08 06:22:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 258 transitions. [2025-02-08 06:22:44,908 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 258 transitions. Word has length 3 [2025-02-08 06:22:44,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:44,908 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 258 transitions. [2025-02-08 06:22:44,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:22:44,909 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 258 transitions. [2025-02-08 06:22:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-08 06:22:44,909 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:44,909 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 06:22:44,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 06:22:44,909 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)] === [2025-02-08 06:22:44,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:44,910 INFO L85 PathProgramCache]: Analyzing trace with hash 280523230, now seen corresponding path program 1 times [2025-02-08 06:22:44,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:44,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131636627] [2025-02-08 06:22:44,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:44,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:44,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 06:22:44,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 06:22:44,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:44,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:22:44,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:44,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131636627] [2025-02-08 06:22:44,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131636627] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:22:44,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:22:44,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:22:44,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552366630] [2025-02-08 06:22:44,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:22:44,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:22:44,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:44,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:22:44,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:22:44,987 INFO L87 Difference]: Start difference. First operand 229 states and 258 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:22:45,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:45,123 INFO L93 Difference]: Finished difference Result 228 states and 257 transitions. [2025-02-08 06:22:45,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:22:45,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-08 06:22:45,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:45,125 INFO L225 Difference]: With dead ends: 228 [2025-02-08 06:22:45,125 INFO L226 Difference]: Without dead ends: 228 [2025-02-08 06:22:45,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:22:45,125 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 3 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:45,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 425 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:22:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-02-08 06:22:45,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2025-02-08 06:22:45,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 131 states have (on average 1.7938931297709924) internal successors, (235), 214 states have internal predecessors, (235), 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) [2025-02-08 06:22:45,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 257 transitions. [2025-02-08 06:22:45,135 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 257 transitions. Word has length 5 [2025-02-08 06:22:45,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:45,135 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 257 transitions. [2025-02-08 06:22:45,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:22:45,135 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 257 transitions. [2025-02-08 06:22:45,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 06:22:45,135 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:45,136 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 06:22:45,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 06:22:45,136 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)] === [2025-02-08 06:22:45,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash 106285643, now seen corresponding path program 1 times [2025-02-08 06:22:45,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:45,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302928765] [2025-02-08 06:22:45,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:45,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:45,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:22:45,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:22:45,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:45,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:22:45,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474003217] [2025-02-08 06:22:45,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:45,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:45,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:45,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:22:45,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 06:22:45,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:22:45,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:22:45,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:45,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:45,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 06:22:45,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:45,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 06:22:45,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:22:45,296 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:22:45,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:45,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302928765] [2025-02-08 06:22:45,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:22:45,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474003217] [2025-02-08 06:22:45,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474003217] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:22:45,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:22:45,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:22:45,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992188442] [2025-02-08 06:22:45,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:22:45,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:22:45,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:45,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:22:45,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:22:45,299 INFO L87 Difference]: Start difference. First operand 228 states and 257 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:22:45,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:45,425 INFO L93 Difference]: Finished difference Result 236 states and 265 transitions. [2025-02-08 06:22:45,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:22:45,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-08 06:22:45,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:45,426 INFO L225 Difference]: With dead ends: 236 [2025-02-08 06:22:45,426 INFO L226 Difference]: Without dead ends: 236 [2025-02-08 06:22:45,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:22:45,427 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 10 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:45,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 673 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:22:45,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2025-02-08 06:22:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2025-02-08 06:22:45,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 138 states have (on average 1.7608695652173914) 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) [2025-02-08 06:22:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 265 transitions. [2025-02-08 06:22:45,435 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 265 transitions. Word has length 6 [2025-02-08 06:22:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:45,436 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 265 transitions. [2025-02-08 06:22:45,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:22:45,436 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 265 transitions. [2025-02-08 06:22:45,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-08 06:22:45,437 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:45,437 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:22:45,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 06:22:45,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:45,641 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)] === [2025-02-08 06:22:45,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:45,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1273397927, now seen corresponding path program 1 times [2025-02-08 06:22:45,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:45,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526362266] [2025-02-08 06:22:45,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:45,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:45,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 06:22:45,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 06:22:45,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:45,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:22:45,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135434832] [2025-02-08 06:22:45,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:45,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:45,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:45,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:22:45,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 06:22:45,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 06:22:45,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 06:22:45,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:45,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:45,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-08 06:22:45,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:45,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2025-02-08 06:22:45,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:22:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-08 06:22:46,054 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:22:46,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:46,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526362266] [2025-02-08 06:22:46,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:22:46,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135434832] [2025-02-08 06:22:46,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135434832] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:22:46,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:22:46,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:22:46,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501990949] [2025-02-08 06:22:46,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:22:46,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:22:46,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:46,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:22:46,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:22:46,057 INFO L87 Difference]: Start difference. First operand 236 states and 265 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 06:22:46,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:46,193 INFO L93 Difference]: Finished difference Result 246 states and 275 transitions. [2025-02-08 06:22:46,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:22:46,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2025-02-08 06:22:46,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:46,194 INFO L225 Difference]: With dead ends: 246 [2025-02-08 06:22:46,194 INFO L226 Difference]: Without dead ends: 238 [2025-02-08 06:22:46,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:22:46,195 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 3 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:46,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 922 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:22:46,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2025-02-08 06:22:46,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2025-02-08 06:22:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 140 states have (on average 1.75) 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) [2025-02-08 06:22:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 267 transitions. [2025-02-08 06:22:46,203 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 267 transitions. Word has length 60 [2025-02-08 06:22:46,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:46,203 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 267 transitions. [2025-02-08 06:22:46,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 06:22:46,203 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 267 transitions. [2025-02-08 06:22:46,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-08 06:22:46,204 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:46,204 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:22:46,212 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 [2025-02-08 06:22:46,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:46,408 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)] === [2025-02-08 06:22:46,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:46,411 INFO L85 PathProgramCache]: Analyzing trace with hash -626485263, now seen corresponding path program 1 times [2025-02-08 06:22:46,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:46,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259727542] [2025-02-08 06:22:46,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:46,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:46,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-08 06:22:46,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 06:22:46,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:46,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:22:46,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211462847] [2025-02-08 06:22:46,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:46,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:46,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:46,587 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:22:46,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 06:22:46,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-08 06:22:46,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 06:22:46,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:46,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:46,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 06:22:46,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:46,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-08 06:22:46,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:22:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-02-08 06:22:46,884 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:22:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 15 proven. 41 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-08 06:22:47,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:47,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259727542] [2025-02-08 06:22:47,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:22:47,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211462847] [2025-02-08 06:22:47,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211462847] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:22:47,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:22:47,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-02-08 06:22:47,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453814398] [2025-02-08 06:22:47,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:22:47,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 06:22:47,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:47,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 06:22:47,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2025-02-08 06:22:47,053 INFO L87 Difference]: Start difference. First operand 238 states and 267 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-08 06:22:47,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:47,364 INFO L93 Difference]: Finished difference Result 254 states and 284 transitions. [2025-02-08 06:22:47,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 06:22:47,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 65 [2025-02-08 06:22:47,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:47,366 INFO L225 Difference]: With dead ends: 254 [2025-02-08 06:22:47,366 INFO L226 Difference]: Without dead ends: 242 [2025-02-08 06:22:47,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2025-02-08 06:22:47,367 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 15 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:47,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1347 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:22:47,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2025-02-08 06:22:47,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2025-02-08 06:22:47,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 144 states have (on average 1.7291666666666667) internal successors, (249), 227 states have internal predecessors, (249), 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) [2025-02-08 06:22:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 271 transitions. [2025-02-08 06:22:47,374 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 271 transitions. Word has length 65 [2025-02-08 06:22:47,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:47,374 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 271 transitions. [2025-02-08 06:22:47,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-08 06:22:47,375 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 271 transitions. [2025-02-08 06:22:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-02-08 06:22:47,376 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:47,376 INFO L218 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:22:47,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 06:22:47,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:47,577 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-08 06:22:47,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:47,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1691061031, now seen corresponding path program 2 times [2025-02-08 06:22:47,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:47,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030152153] [2025-02-08 06:22:47,578 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:22:47,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:47,611 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-08 06:22:47,732 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-02-08 06:22:47,732 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:22:47,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:22:47,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389074429] [2025-02-08 06:22:47,741 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:22:47,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:47,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:47,748 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:22:47,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 06:22:47,868 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-08 06:22:48,077 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-02-08 06:22:48,077 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:22:48,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:48,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 06:22:48,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:48,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 06:22:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2025-02-08 06:22:48,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:22:48,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:48,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030152153] [2025-02-08 06:22:48,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:22:48,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389074429] [2025-02-08 06:22:48,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389074429] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:22:48,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:22:48,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:22:48,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188541898] [2025-02-08 06:22:48,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:22:48,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:22:48,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:48,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:22:48,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:22:48,122 INFO L87 Difference]: Start difference. First operand 242 states and 271 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 06:22:48,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:48,217 INFO L93 Difference]: Finished difference Result 241 states and 270 transitions. [2025-02-08 06:22:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:22:48,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 80 [2025-02-08 06:22:48,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:48,219 INFO L225 Difference]: With dead ends: 241 [2025-02-08 06:22:48,219 INFO L226 Difference]: Without dead ends: 241 [2025-02-08 06:22:48,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:22:48,219 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 10 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:48,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 694 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:22:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2025-02-08 06:22:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2025-02-08 06:22:48,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 144 states have (on average 1.7222222222222223) 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) [2025-02-08 06:22:48,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 270 transitions. [2025-02-08 06:22:48,227 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 270 transitions. Word has length 80 [2025-02-08 06:22:48,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:48,227 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 270 transitions. [2025-02-08 06:22:48,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 06:22:48,228 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 270 transitions. [2025-02-08 06:22:48,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-02-08 06:22:48,229 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:48,229 INFO L218 NwaCegarLoop]: trace histogram [22, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:22:48,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 06:22:48,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-08 06:22:48,434 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-08 06:22:48,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:48,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1896748244, now seen corresponding path program 1 times [2025-02-08 06:22:48,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:48,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764330352] [2025-02-08 06:22:48,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:48,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:48,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-08 06:22:48,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-08 06:22:48,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:48,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 213 proven. 21 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2025-02-08 06:22:49,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:49,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764330352] [2025-02-08 06:22:49,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764330352] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:22:49,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571526078] [2025-02-08 06:22:49,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:49,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:49,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:49,239 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:22:49,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 06:22:49,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-08 06:22:49,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-08 06:22:49,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:49,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:49,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-08 06:22:49,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:49,510 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2025-02-08 06:22:49,542 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-08 06:22:49,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-02-08 06:22:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 213 proven. 1 refuted. 0 times theorem prover too weak. 249 trivial. 20 not checked. [2025-02-08 06:22:49,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:22:49,709 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 06:22:49,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2025-02-08 06:22:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 213 proven. 21 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2025-02-08 06:22:49,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571526078] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:22:49,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:22:49,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 15 [2025-02-08 06:22:49,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969665897] [2025-02-08 06:22:49,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:22:49,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 06:22:49,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:49,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 06:22:49,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=173, Unknown=1, NotChecked=26, Total=240 [2025-02-08 06:22:49,726 INFO L87 Difference]: Start difference. First operand 241 states and 270 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 06:22:50,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:50,301 INFO L93 Difference]: Finished difference Result 345 states and 393 transitions. [2025-02-08 06:22:50,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:22:50,302 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 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 88 [2025-02-08 06:22:50,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:50,304 INFO L225 Difference]: With dead ends: 345 [2025-02-08 06:22:50,304 INFO L226 Difference]: Without dead ends: 345 [2025-02-08 06:22:50,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 168 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=278, Unknown=1, NotChecked=34, Total=380 [2025-02-08 06:22:50,305 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 360 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 372 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:50,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 2004 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1078 Invalid, 0 Unknown, 372 Unchecked, 0.5s Time] [2025-02-08 06:22:50,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2025-02-08 06:22:50,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 239. [2025-02-08 06:22:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 144 states have (on average 1.7083333333333333) 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) [2025-02-08 06:22:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 268 transitions. [2025-02-08 06:22:50,311 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 268 transitions. Word has length 88 [2025-02-08 06:22:50,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:50,311 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 268 transitions. [2025-02-08 06:22:50,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 06:22:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 268 transitions. [2025-02-08 06:22:50,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-02-08 06:22:50,312 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:50,312 INFO L218 NwaCegarLoop]: trace histogram [22, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:22:50,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 06:22:50,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:50,513 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-08 06:22:50,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:50,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1896748243, now seen corresponding path program 1 times [2025-02-08 06:22:50,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:50,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141749818] [2025-02-08 06:22:50,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:50,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:50,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-08 06:22:50,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-08 06:22:50,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:50,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:22:50,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195144088] [2025-02-08 06:22:50,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:50,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:50,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:50,630 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:22:50,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 06:22:50,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-08 06:22:51,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-08 06:22:51,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:51,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:51,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-02-08 06:22:51,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:51,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2025-02-08 06:22:51,247 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:22:51,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:22:51,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 06:22:51,285 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 06:22:51,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 06:22:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 21 not checked. [2025-02-08 06:22:51,297 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:22:51,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:51,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141749818] [2025-02-08 06:22:51,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:22:51,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195144088] [2025-02-08 06:22:51,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195144088] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:22:51,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 06:22:51,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-02-08 06:22:51,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879860448] [2025-02-08 06:22:51,372 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 06:22:51,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 06:22:51,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:51,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 06:22:51,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=153, Unknown=1, NotChecked=24, Total=210 [2025-02-08 06:22:51,373 INFO L87 Difference]: Start difference. First operand 239 states and 268 transitions. Second operand has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 06:22:52,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:52,553 INFO L93 Difference]: Finished difference Result 343 states and 391 transitions. [2025-02-08 06:22:52,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 06:22:52,554 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 88 [2025-02-08 06:22:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:52,555 INFO L225 Difference]: With dead ends: 343 [2025-02-08 06:22:52,555 INFO L226 Difference]: Without dead ends: 343 [2025-02-08 06:22:52,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=294, Unknown=1, NotChecked=34, Total=380 [2025-02-08 06:22:52,556 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 134 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 369 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:52,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 523 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1960 Invalid, 0 Unknown, 369 Unchecked, 1.0s Time] [2025-02-08 06:22:52,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2025-02-08 06:22:52,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 237. [2025-02-08 06:22:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 144 states have (on average 1.6944444444444444) internal successors, (244), 222 states have internal predecessors, (244), 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) [2025-02-08 06:22:52,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 266 transitions. [2025-02-08 06:22:52,563 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 266 transitions. Word has length 88 [2025-02-08 06:22:52,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:52,563 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 266 transitions. [2025-02-08 06:22:52,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 06:22:52,563 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 266 transitions. [2025-02-08 06:22:52,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-02-08 06:22:52,564 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:52,564 INFO L218 NwaCegarLoop]: trace histogram [22, 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] [2025-02-08 06:22:52,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 06:22:52,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-08 06:22:52,765 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-08 06:22:52,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:52,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1708922295, now seen corresponding path program 1 times [2025-02-08 06:22:52,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:52,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50585236] [2025-02-08 06:22:52,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:52,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:52,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-02-08 06:22:52,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-02-08 06:22:52,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:52,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 257 proven. 73 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2025-02-08 06:22:53,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:53,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50585236] [2025-02-08 06:22:53,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50585236] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:22:53,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659011406] [2025-02-08 06:22:53,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:53,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:53,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:53,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:22:53,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 06:22:53,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-02-08 06:22:53,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-02-08 06:22:53,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:53,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:53,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-08 06:22:53,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:53,736 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#valid| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|))) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:22:53,777 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-02-08 06:22:53,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2025-02-08 06:22:53,800 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2025-02-08 06:22:53,817 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-08 06:22:53,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-02-08 06:22:53,830 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 257 proven. 1 refuted. 0 times theorem prover too weak. 153 trivial. 72 not checked. [2025-02-08 06:22:53,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:22:54,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659011406] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:22:54,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:22:54,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2025-02-08 06:22:54,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437574600] [2025-02-08 06:22:54,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:22:54,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 06:22:54,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:54,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 06:22:54,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=324, Unknown=2, NotChecked=74, Total=462 [2025-02-08 06:22:54,002 INFO L87 Difference]: Start difference. First operand 237 states and 266 transitions. Second operand has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 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) [2025-02-08 06:22:54,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:54,618 INFO L93 Difference]: Finished difference Result 340 states and 388 transitions. [2025-02-08 06:22:54,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 06:22:54,619 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 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 90 [2025-02-08 06:22:54,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:54,620 INFO L225 Difference]: With dead ends: 340 [2025-02-08 06:22:54,620 INFO L226 Difference]: Without dead ends: 340 [2025-02-08 06:22:54,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 98 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=506, Unknown=2, NotChecked=94, Total=702 [2025-02-08 06:22:54,621 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 486 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 733 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:54,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 1938 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1083 Invalid, 0 Unknown, 733 Unchecked, 0.5s Time] [2025-02-08 06:22:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2025-02-08 06:22:54,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 234. [2025-02-08 06:22:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 144 states have (on average 1.6736111111111112) internal successors, (241), 219 states have internal predecessors, (241), 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) [2025-02-08 06:22:54,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 263 transitions. [2025-02-08 06:22:54,626 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 263 transitions. Word has length 90 [2025-02-08 06:22:54,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:54,627 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 263 transitions. [2025-02-08 06:22:54,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 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) [2025-02-08 06:22:54,627 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 263 transitions. [2025-02-08 06:22:54,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-02-08 06:22:54,627 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:54,628 INFO L218 NwaCegarLoop]: trace histogram [22, 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] [2025-02-08 06:22:54,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 06:22:54,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:54,828 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)] === [2025-02-08 06:22:54,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:54,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1708922294, now seen corresponding path program 1 times [2025-02-08 06:22:54,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:54,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988713733] [2025-02-08 06:22:54,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:54,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:54,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-02-08 06:22:54,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-02-08 06:22:54,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:54,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 213 proven. 31 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2025-02-08 06:22:56,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:56,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988713733] [2025-02-08 06:22:56,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988713733] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:22:56,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980207290] [2025-02-08 06:22:56,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:56,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:56,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:56,309 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:22:56,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 06:22:56,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-02-08 06:22:56,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-02-08 06:22:56,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:56,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:56,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-02-08 06:22:56,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:56,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-02-08 06:23:10,173 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:23:10,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:23:10,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 06:23:10,216 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 06:23:10,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 06:23:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 181 proven. 153 refuted. 0 times theorem prover too weak. 95 trivial. 54 not checked. [2025-02-08 06:23:10,260 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:23:10,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980207290] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:23:10,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:23:10,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 35 [2025-02-08 06:23:10,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179537960] [2025-02-08 06:23:10,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:23:10,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-08 06:23:10,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:10,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-08 06:23:10,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1156, Unknown=4, NotChecked=68, Total=1332 [2025-02-08 06:23:10,356 INFO L87 Difference]: Start difference. First operand 234 states and 263 transitions. Second operand has 35 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 30 states have internal predecessors, (68), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:23:14,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:23:17,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:17,419 INFO L93 Difference]: Finished difference Result 359 states and 417 transitions. [2025-02-08 06:23:17,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 06:23:17,419 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 30 states have internal predecessors, (68), 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 90 [2025-02-08 06:23:17,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:17,421 INFO L225 Difference]: With dead ends: 359 [2025-02-08 06:23:17,421 INFO L226 Difference]: Without dead ends: 356 [2025-02-08 06:23:17,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=4, NotChecked=94, Total=2450 [2025-02-08 06:23:17,422 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 255 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 3788 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 4179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:17,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1309 Invalid, 4179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3788 Invalid, 1 Unknown, 378 Unchecked, 6.3s Time] [2025-02-08 06:23:17,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2025-02-08 06:23:17,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 239. [2025-02-08 06:23:17,435 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) [2025-02-08 06:23:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 272 transitions. [2025-02-08 06:23:17,436 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 272 transitions. Word has length 90 [2025-02-08 06:23:17,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:17,437 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 272 transitions. [2025-02-08 06:23:17,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 30 states have internal predecessors, (68), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:23:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 272 transitions. [2025-02-08 06:23:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-02-08 06:23:17,437 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:17,437 INFO L218 NwaCegarLoop]: trace histogram [23, 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] [2025-02-08 06:23:17,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 06:23:17,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:17,638 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)] === [2025-02-08 06:23:17,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:17,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1487396476, now seen corresponding path program 2 times [2025-02-08 06:23:17,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:17,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219994395] [2025-02-08 06:23:17,639 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:23:17,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:17,665 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes. [2025-02-08 06:23:17,771 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-02-08 06:23:17,771 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:23:17,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 233 proven. 39 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2025-02-08 06:23:18,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:18,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219994395] [2025-02-08 06:23:18,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219994395] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:23:18,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413063519] [2025-02-08 06:23:18,888 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:23:18,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:18,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:18,890 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:23:18,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 06:23:19,055 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes. [2025-02-08 06:23:19,319 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-02-08 06:23:19,319 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:23:19,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:19,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 76 conjuncts are in the unsatisfiable core [2025-02-08 06:23:19,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:23:19,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-08 06:23:46,249 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:23:46,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:23:46,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 06:23:46,285 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 06:23:46,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 06:23:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 165 proven. 195 refuted. 0 times theorem prover too weak. 94 trivial. 57 not checked. [2025-02-08 06:23:46,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:23:46,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413063519] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:23:46,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:23:46,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23] total 38 [2025-02-08 06:23:46,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708293707] [2025-02-08 06:23:46,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:23:46,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-02-08 06:23:46,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:46,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-02-08 06:23:46,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1361, Unknown=7, NotChecked=74, Total=1560 [2025-02-08 06:23:46,448 INFO L87 Difference]: Start difference. First operand 239 states and 272 transitions. Second operand has 38 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 33 states have internal predecessors, (71), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:23:50,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:23:55,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:55,166 INFO L93 Difference]: Finished difference Result 361 states and 423 transitions. [2025-02-08 06:23:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 06:23:55,166 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 33 states have internal predecessors, (71), 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 91 [2025-02-08 06:23:55,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:55,169 INFO L225 Difference]: With dead ends: 361 [2025-02-08 06:23:55,170 INFO L226 Difference]: Without dead ends: 358 [2025-02-08 06:23:55,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=224, Invalid=2223, Unknown=7, NotChecked=96, Total=2550 [2025-02-08 06:23:55,172 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 362 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 3964 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 4364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3964 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 376 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:55,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1442 Invalid, 4364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 3964 Invalid, 1 Unknown, 376 Unchecked, 6.4s Time] [2025-02-08 06:23:55,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2025-02-08 06:23:55,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 240. [2025-02-08 06:23:55,188 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) [2025-02-08 06:23:55,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 274 transitions. [2025-02-08 06:23:55,193 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 274 transitions. Word has length 91 [2025-02-08 06:23:55,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:55,193 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 274 transitions. [2025-02-08 06:23:55,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 33 states have internal predecessors, (71), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:23:55,194 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 274 transitions. [2025-02-08 06:23:55,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-02-08 06:23:55,194 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:55,194 INFO L218 NwaCegarLoop]: trace histogram [24, 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] [2025-02-08 06:23:55,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 06:23:55,394 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 [2025-02-08 06:23:55,395 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)] === [2025-02-08 06:23:55,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:55,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1789030538, now seen corresponding path program 3 times [2025-02-08 06:23:55,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:55,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787141241] [2025-02-08 06:23:55,395 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:23:55,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:55,426 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 92 statements into 12 equivalence classes. [2025-02-08 06:23:55,472 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 60 of 92 statements. [2025-02-08 06:23:55,472 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-08 06:23:55,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 253 proven. 48 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2025-02-08 06:23:56,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:56,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787141241] [2025-02-08 06:23:56,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787141241] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:23:56,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680700696] [2025-02-08 06:23:56,219 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:23:56,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:56,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:56,221 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:23:56,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 06:23:56,398 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 92 statements into 12 equivalence classes. [2025-02-08 06:23:56,680 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 92 statements. [2025-02-08 06:23:56,680 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 06:23:56,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:56,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 06:23:56,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:23:56,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-08 06:23:56,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:23:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 111 proven. 3 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2025-02-08 06:23:56,882 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:23:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 111 proven. 3 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2025-02-08 06:23:57,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680700696] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:23:57,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:23:57,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 7, 7] total 29 [2025-02-08 06:23:57,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202852381] [2025-02-08 06:23:57,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:23:57,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-08 06:23:57,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:57,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-08 06:23:57,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2025-02-08 06:23:57,165 INFO L87 Difference]: Start difference. First operand 240 states and 274 transitions. Second operand has 29 states, 28 states have (on average 2.25) internal successors, (63), 26 states have internal predecessors, (63), 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) [2025-02-08 06:23:59,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:59,717 INFO L93 Difference]: Finished difference Result 371 states and 433 transitions. [2025-02-08 06:23:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-08 06:23:59,718 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.25) internal successors, (63), 26 states have internal predecessors, (63), 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 92 [2025-02-08 06:23:59,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:59,719 INFO L225 Difference]: With dead ends: 371 [2025-02-08 06:23:59,719 INFO L226 Difference]: Without dead ends: 360 [2025-02-08 06:23:59,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=440, Invalid=2640, Unknown=0, NotChecked=0, Total=3080 [2025-02-08 06:23:59,720 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 392 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 3609 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 3648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:59,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1203 Invalid, 3648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3609 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-08 06:23:59,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2025-02-08 06:23:59,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 245. [2025-02-08 06:23:59,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 154 states have (on average 1.6493506493506493) internal successors, (254), 230 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) [2025-02-08 06:23:59,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 280 transitions. [2025-02-08 06:23:59,734 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 280 transitions. Word has length 92 [2025-02-08 06:23:59,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:59,735 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 280 transitions. [2025-02-08 06:23:59,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.25) internal successors, (63), 26 states have internal predecessors, (63), 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) [2025-02-08 06:23:59,735 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 280 transitions. [2025-02-08 06:23:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-08 06:23:59,735 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:59,737 INFO L218 NwaCegarLoop]: trace histogram [29, 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] [2025-02-08 06:23:59,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 06:23:59,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-08 06:23:59,938 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 82 more)] === [2025-02-08 06:23:59,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:59,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1934271932, now seen corresponding path program 4 times [2025-02-08 06:23:59,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:59,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330981574] [2025-02-08 06:23:59,939 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:23:59,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:59,974 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 97 statements into 2 equivalence classes. [2025-02-08 06:24:00,125 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 06:24:00,125 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:24:00,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 353 proven. 90 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2025-02-08 06:24:01,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:01,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330981574] [2025-02-08 06:24:01,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330981574] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:01,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565533564] [2025-02-08 06:24:01,648 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:24:01,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:01,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:01,651 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:01,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 06:24:01,891 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 97 statements into 2 equivalence classes. [2025-02-08 06:24:01,980 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 06:24:01,980 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:24:01,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:01,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 88 conjuncts are in the unsatisfiable core [2025-02-08 06:24:01,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:02,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-08 06:24:02,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 06:24:07,101 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| (select |c_#valid| |zalloc_or_die_calloc_model_~ptr~0#1.base|))) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| (select |c_#length| |zalloc_or_die_calloc_model_~ptr~0#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) 0))) is different from true [2025-02-08 06:24:07,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:24:07,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-08 06:24:07,356 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-02-08 06:24:07,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2025-02-08 06:24:07,376 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| (select |c_#length| |zalloc_or_die_calloc_model_~ptr~0#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) 0))) is different from true [2025-02-08 06:24:07,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:24:07,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-08 06:24:07,439 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 06:24:07,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 06:24:07,532 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 275 proven. 109 refuted. 0 times theorem prover too weak. 95 trivial. 221 not checked. [2025-02-08 06:24:07,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:07,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565533564] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:07,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:24:07,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23] total 41 [2025-02-08 06:24:07,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732739483] [2025-02-08 06:24:07,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:07,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-08 06:24:07,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:07,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-08 06:24:07,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1529, Unknown=3, NotChecked=158, Total=1806 [2025-02-08 06:24:07,674 INFO L87 Difference]: Start difference. First operand 245 states and 280 transitions. Second operand has 41 states, 40 states have (on average 2.1) internal successors, (84), 37 states have internal predecessors, (84), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-08 06:24:12,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:24:17,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]