./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:36:17,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:36:17,056 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:36:17,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:36:17,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:36:17,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:36:17,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:36:17,074 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:36:17,075 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:36:17,075 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:36:17,075 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:36:17,075 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:36:17,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:36:17,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:36:17,075 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:36:17,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:36:17,076 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:36:17,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:36:17,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:36:17,076 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:36:17,076 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:36:17,076 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:36:17,076 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:36:17,076 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:36:17,076 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:36:17,076 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:36:17,077 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:36:17,077 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:36:17,077 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:36:17,077 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:36:17,077 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:36:17,077 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:36:17,077 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:36:17,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:36:17,077 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:36:17,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:36:17,077 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:36:17,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:36:17,078 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:36:17,078 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:36:17,078 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:36:17,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:36:17,078 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/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 -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2025-03-17 13:36:17,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:36:17,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:36:17,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:36:17,322 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:36:17,322 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:36:17,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2025-03-17 13:36:18,490 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68931cf4f/8641cbab2a3d40eab619c28778b4a6ec/FLAG8576e19a9 [2025-03-17 13:36:18,765 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:36:18,766 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2025-03-17 13:36:18,776 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68931cf4f/8641cbab2a3d40eab619c28778b4a6ec/FLAG8576e19a9 [2025-03-17 13:36:19,054 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68931cf4f/8641cbab2a3d40eab619c28778b4a6ec [2025-03-17 13:36:19,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:36:19,057 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:36:19,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:36:19,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:36:19,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:36:19,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:36:19" (1/1) ... [2025-03-17 13:36:19,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3941766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19, skipping insertion in model container [2025-03-17 13:36:19,062 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:36:19" (1/1) ... [2025-03-17 13:36:19,092 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:36:19,318 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:36:19,346 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:36:19,349 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:36:19,351 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:36:19,355 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:36:19,371 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:36:19,372 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:36:19,374 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:36:19,376 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:36:19,382 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:36:19,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:36:19,399 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:36:19,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:36:19,495 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:36:19,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19 WrapperNode [2025-03-17 13:36:19,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:36:19,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:36:19,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:36:19,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:36:19,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19" (1/1) ... [2025-03-17 13:36:19,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19" (1/1) ... [2025-03-17 13:36:19,556 INFO L138 Inliner]: procedures = 176, calls = 336, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1557 [2025-03-17 13:36:19,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:36:19,556 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:36:19,556 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:36:19,556 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:36:19,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19" (1/1) ... [2025-03-17 13:36:19,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19" (1/1) ... [2025-03-17 13:36:19,575 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19" (1/1) ... [2025-03-17 13:36:19,643 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [2, 307]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 82 writes are split as follows [0, 82]. [2025-03-17 13:36:19,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19" (1/1) ... [2025-03-17 13:36:19,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19" (1/1) ... [2025-03-17 13:36:19,686 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19" (1/1) ... [2025-03-17 13:36:19,690 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19" (1/1) ... [2025-03-17 13:36:19,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19" (1/1) ... [2025-03-17 13:36:19,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19" (1/1) ... [2025-03-17 13:36:19,710 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:36:19,711 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:36:19,712 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:36:19,712 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:36:19,713 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19" (1/1) ... [2025-03-17 13:36:19,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:36:19,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:36:19,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 13:36:19,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 13:36:19,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 13:36:19,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 13:36:19,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 13:36:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 13:36:19,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 13:36:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 13:36:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 13:36:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 13:36:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 13:36:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 13:36:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 13:36:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:36:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 13:36:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 13:36:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 13:36:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 13:36:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 13:36:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 13:36:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 13:36:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:36:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:36:19,949 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:36:19,951 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:36:21,840 INFO L? ?]: Removed 1502 outVars from TransFormulas that were not future-live. [2025-03-17 13:36:21,840 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:36:21,910 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:36:21,910 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-17 13:36:21,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:36:21 BoogieIcfgContainer [2025-03-17 13:36:21,910 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:36:21,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:36:21,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:36:21,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:36:21,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:36:19" (1/3) ... [2025-03-17 13:36:21,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183826ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:36:21, skipping insertion in model container [2025-03-17 13:36:21,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:36:19" (2/3) ... [2025-03-17 13:36:21,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183826ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:36:21, skipping insertion in model container [2025-03-17 13:36:21,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:36:21" (3/3) ... [2025-03-17 13:36:21,917 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-1.i [2025-03-17 13:36:21,927 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:36:21,928 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test4-1.i that has 4 procedures, 1447 locations, 1 initial locations, 34 loop locations, and 628 error locations. [2025-03-17 13:36:21,980 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:36:21,990 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;@5327b638, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:36:21,990 INFO L334 AbstractCegarLoop]: Starting to check reachability of 628 error locations. [2025-03-17 13:36:21,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 1442 states, 801 states have (on average 2.0811485642946317) internal successors, (1667), 1433 states have internal predecessors, (1667), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:22,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:36:22,001 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:22,002 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:36:22,002 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr625REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:22,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:22,006 INFO L85 PathProgramCache]: Analyzing trace with hash 54763678, now seen corresponding path program 1 times [2025-03-17 13:36:22,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:22,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185863424] [2025-03-17 13:36:22,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:22,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:22,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:36:22,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:36:22,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:22,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:22,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:22,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185863424] [2025-03-17 13:36:22,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185863424] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:22,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:22,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:36:22,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259148744] [2025-03-17 13:36:22,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:22,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 13:36:22,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:22,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 13:36:22,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 13:36:22,139 INFO L87 Difference]: Start difference. First operand has 1442 states, 801 states have (on average 2.0811485642946317) internal successors, (1667), 1433 states have internal predecessors, (1667), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:36:22,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:22,265 INFO L93 Difference]: Finished difference Result 1423 states and 1617 transitions. [2025-03-17 13:36:22,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 13:36:22,267 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:36:22,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:22,284 INFO L225 Difference]: With dead ends: 1423 [2025-03-17 13:36:22,285 INFO L226 Difference]: Without dead ends: 1421 [2025-03-17 13:36:22,286 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 [2025-03-17 13:36:22,288 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:22,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1573 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:36:22,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2025-03-17 13:36:22,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1421. [2025-03-17 13:36:22,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 791 states have (on average 2.0012642225031607) internal successors, (1583), 1412 states have internal predecessors, (1583), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1615 transitions. [2025-03-17 13:36:22,370 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1615 transitions. Word has length 4 [2025-03-17 13:36:22,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:22,370 INFO L471 AbstractCegarLoop]: Abstraction has 1421 states and 1615 transitions. [2025-03-17 13:36:22,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:36:22,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1615 transitions. [2025-03-17 13:36:22,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:36:22,370 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:22,370 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:36:22,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 13:36:22,371 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr625REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:22,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:22,372 INFO L85 PathProgramCache]: Analyzing trace with hash 54763709, now seen corresponding path program 1 times [2025-03-17 13:36:22,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:22,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158274920] [2025-03-17 13:36:22,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:22,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:22,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:36:22,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:36:22,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:22,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:22,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:22,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158274920] [2025-03-17 13:36:22,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158274920] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:22,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:22,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:36:22,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120363824] [2025-03-17 13:36:22,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:22,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:36:22,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:22,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:36:22,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:36:22,452 INFO L87 Difference]: Start difference. First operand 1421 states and 1615 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:36:23,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:23,301 INFO L93 Difference]: Finished difference Result 1328 states and 1523 transitions. [2025-03-17 13:36:23,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:36:23,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:36:23,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:23,309 INFO L225 Difference]: With dead ends: 1328 [2025-03-17 13:36:23,309 INFO L226 Difference]: Without dead ends: 1328 [2025-03-17 13:36:23,310 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 [2025-03-17 13:36:23,310 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 1358 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:23,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1374 Valid, 875 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 13:36:23,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2025-03-17 13:36:23,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1327. [2025-03-17 13:36:23,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 791 states have (on average 1.8824273072060682) internal successors, (1489), 1318 states have internal predecessors, (1489), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1521 transitions. [2025-03-17 13:36:23,329 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1521 transitions. Word has length 4 [2025-03-17 13:36:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:23,329 INFO L471 AbstractCegarLoop]: Abstraction has 1327 states and 1521 transitions. [2025-03-17 13:36:23,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:36:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1521 transitions. [2025-03-17 13:36:23,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:36:23,329 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:23,330 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:36:23,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 13:36:23,330 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr626REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:23,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:23,330 INFO L85 PathProgramCache]: Analyzing trace with hash 54763710, now seen corresponding path program 1 times [2025-03-17 13:36:23,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:23,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168598257] [2025-03-17 13:36:23,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:23,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:23,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:36:23,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:36:23,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:23,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:23,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:23,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168598257] [2025-03-17 13:36:23,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168598257] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:23,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:23,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:36:23,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950956301] [2025-03-17 13:36:23,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:23,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:36:23,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:23,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:36:23,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:36:23,404 INFO L87 Difference]: Start difference. First operand 1327 states and 1521 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:36:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:24,160 INFO L93 Difference]: Finished difference Result 1740 states and 2012 transitions. [2025-03-17 13:36:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:36:24,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:36:24,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:24,165 INFO L225 Difference]: With dead ends: 1740 [2025-03-17 13:36:24,165 INFO L226 Difference]: Without dead ends: 1740 [2025-03-17 13:36:24,166 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 [2025-03-17 13:36:24,166 INFO L435 NwaCegarLoop]: 1231 mSDtfsCounter, 815 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:24,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1859 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 13:36:24,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2025-03-17 13:36:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1588. [2025-03-17 13:36:24,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1062 states have (on average 1.8465160075329567) internal successors, (1961), 1579 states have internal predecessors, (1961), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:24,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 1993 transitions. [2025-03-17 13:36:24,189 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 1993 transitions. Word has length 4 [2025-03-17 13:36:24,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:24,189 INFO L471 AbstractCegarLoop]: Abstraction has 1588 states and 1993 transitions. [2025-03-17 13:36:24,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:36:24,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 1993 transitions. [2025-03-17 13:36:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:36:24,190 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:24,190 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:36:24,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 13:36:24,190 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:24,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:24,191 INFO L85 PathProgramCache]: Analyzing trace with hash 53111358, now seen corresponding path program 1 times [2025-03-17 13:36:24,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:24,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388654653] [2025-03-17 13:36:24,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:24,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:24,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:36:24,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:36:24,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:24,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:24,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:24,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388654653] [2025-03-17 13:36:24,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388654653] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:24,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:24,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:36:24,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168733938] [2025-03-17 13:36:24,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:24,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:36:24,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:24,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:36:24,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:36:24,216 INFO L87 Difference]: Start difference. First operand 1588 states and 1993 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:36:24,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:24,341 INFO L93 Difference]: Finished difference Result 3130 states and 3920 transitions. [2025-03-17 13:36:24,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:36:24,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:36:24,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:24,349 INFO L225 Difference]: With dead ends: 3130 [2025-03-17 13:36:24,350 INFO L226 Difference]: Without dead ends: 3130 [2025-03-17 13:36:24,350 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 [2025-03-17 13:36:24,350 INFO L435 NwaCegarLoop]: 1691 mSDtfsCounter, 1432 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:24,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 3152 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:36:24,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2025-03-17 13:36:24,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 1589. [2025-03-17 13:36:24,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1063 states have (on average 1.845719661335842) internal successors, (1962), 1580 states have internal predecessors, (1962), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:24,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 1994 transitions. [2025-03-17 13:36:24,384 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 1994 transitions. Word has length 4 [2025-03-17 13:36:24,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:24,385 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 1994 transitions. [2025-03-17 13:36:24,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:36:24,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 1994 transitions. [2025-03-17 13:36:24,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 13:36:24,385 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:24,385 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:24,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 13:36:24,386 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr621REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:24,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:24,386 INFO L85 PathProgramCache]: Analyzing trace with hash 969378891, now seen corresponding path program 1 times [2025-03-17 13:36:24,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:24,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181137517] [2025-03-17 13:36:24,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:24,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:24,395 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 13:36:24,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 13:36:24,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:24,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:24,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181137517] [2025-03-17 13:36:24,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181137517] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:24,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:24,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:36:24,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781652122] [2025-03-17 13:36:24,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:24,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:36:24,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:24,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:36:24,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:36:24,470 INFO L87 Difference]: Start difference. First operand 1589 states and 1994 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2025-03-17 13:36:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:25,364 INFO L93 Difference]: Finished difference Result 1615 states and 2047 transitions. [2025-03-17 13:36:25,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:36:25,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2025-03-17 13:36:25,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:25,368 INFO L225 Difference]: With dead ends: 1615 [2025-03-17 13:36:25,369 INFO L226 Difference]: Without dead ends: 1615 [2025-03-17 13:36:25,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:36:25,369 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 1626 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:25,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 1535 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 13:36:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2025-03-17 13:36:25,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1566. [2025-03-17 13:36:25,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1063 states have (on average 1.824082784571966) internal successors, (1939), 1557 states have internal predecessors, (1939), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 1971 transitions. [2025-03-17 13:36:25,387 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 1971 transitions. Word has length 9 [2025-03-17 13:36:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:25,387 INFO L471 AbstractCegarLoop]: Abstraction has 1566 states and 1971 transitions. [2025-03-17 13:36:25,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2025-03-17 13:36:25,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 1971 transitions. [2025-03-17 13:36:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 13:36:25,388 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:25,388 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:25,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 13:36:25,388 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr622REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:25,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:25,388 INFO L85 PathProgramCache]: Analyzing trace with hash 969378892, now seen corresponding path program 1 times [2025-03-17 13:36:25,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:25,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061405101] [2025-03-17 13:36:25,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:25,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:25,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 13:36:25,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 13:36:25,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:25,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:25,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:25,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:25,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061405101] [2025-03-17 13:36:25,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061405101] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:25,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:25,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:36:25,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615959591] [2025-03-17 13:36:25,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:25,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:36:25,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:25,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:36:25,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:36:25,454 INFO L87 Difference]: Start difference. First operand 1566 states and 1971 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2025-03-17 13:36:25,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:25,520 INFO L93 Difference]: Finished difference Result 1491 states and 1868 transitions. [2025-03-17 13:36:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:36:25,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2025-03-17 13:36:25,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:25,526 INFO L225 Difference]: With dead ends: 1491 [2025-03-17 13:36:25,526 INFO L226 Difference]: Without dead ends: 1491 [2025-03-17 13:36:25,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:36:25,527 INFO L435 NwaCegarLoop]: 1339 mSDtfsCounter, 60 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:25,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 2625 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:36:25,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2025-03-17 13:36:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1491. [2025-03-17 13:36:25,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1000 states have (on average 1.836) internal successors, (1836), 1482 states have internal predecessors, (1836), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 1868 transitions. [2025-03-17 13:36:25,543 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 1868 transitions. Word has length 9 [2025-03-17 13:36:25,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:25,543 INFO L471 AbstractCegarLoop]: Abstraction has 1491 states and 1868 transitions. [2025-03-17 13:36:25,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2025-03-17 13:36:25,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 1868 transitions. [2025-03-17 13:36:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-17 13:36:25,544 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:25,544 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:25,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 13:36:25,544 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr598REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:25,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:25,544 INFO L85 PathProgramCache]: Analyzing trace with hash -14148838, now seen corresponding path program 1 times [2025-03-17 13:36:25,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:25,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562862901] [2025-03-17 13:36:25,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:25,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:25,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 13:36:25,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 13:36:25,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:25,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:25,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:25,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562862901] [2025-03-17 13:36:25,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562862901] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:25,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:25,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:36:25,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36274021] [2025-03-17 13:36:25,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:25,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:36:25,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:25,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:36:25,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:36:25,600 INFO L87 Difference]: Start difference. First operand 1491 states and 1868 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:36:25,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:25,693 INFO L93 Difference]: Finished difference Result 1473 states and 1843 transitions. [2025-03-17 13:36:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:36:25,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-17 13:36:25,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:25,698 INFO L225 Difference]: With dead ends: 1473 [2025-03-17 13:36:25,698 INFO L226 Difference]: Without dead ends: 1473 [2025-03-17 13:36:25,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:36:25,698 INFO L435 NwaCegarLoop]: 1304 mSDtfsCounter, 41 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3884 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:25,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3884 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:36:25,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2025-03-17 13:36:25,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1470. [2025-03-17 13:36:25,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 986 states have (on average 1.8336713995943206) internal successors, (1808), 1461 states have internal predecessors, (1808), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:25,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1840 transitions. [2025-03-17 13:36:25,714 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1840 transitions. Word has length 10 [2025-03-17 13:36:25,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:25,714 INFO L471 AbstractCegarLoop]: Abstraction has 1470 states and 1840 transitions. [2025-03-17 13:36:25,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:36:25,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1840 transitions. [2025-03-17 13:36:25,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-17 13:36:25,715 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:25,715 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:25,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 13:36:25,715 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr584REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:25,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:25,716 INFO L85 PathProgramCache]: Analyzing trace with hash -512397488, now seen corresponding path program 1 times [2025-03-17 13:36:25,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:25,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485432180] [2025-03-17 13:36:25,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:25,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:25,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 13:36:25,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 13:36:25,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:25,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:25,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:25,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485432180] [2025-03-17 13:36:25,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485432180] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:25,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:25,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:36:25,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845955971] [2025-03-17 13:36:25,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:25,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:36:25,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:25,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:36:25,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:36:25,838 INFO L87 Difference]: Start difference. First operand 1470 states and 1840 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2025-03-17 13:36:26,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:26,728 INFO L93 Difference]: Finished difference Result 1667 states and 1931 transitions. [2025-03-17 13:36:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:36:26,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-03-17 13:36:26,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:26,734 INFO L225 Difference]: With dead ends: 1667 [2025-03-17 13:36:26,734 INFO L226 Difference]: Without dead ends: 1667 [2025-03-17 13:36:26,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:36:26,735 INFO L435 NwaCegarLoop]: 1123 mSDtfsCounter, 821 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:26,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 2475 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 13:36:26,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2025-03-17 13:36:26,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1466. [2025-03-17 13:36:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 986 states have (on average 1.8296146044624746) internal successors, (1804), 1457 states have internal predecessors, (1804), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1836 transitions. [2025-03-17 13:36:26,755 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1836 transitions. Word has length 24 [2025-03-17 13:36:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:26,755 INFO L471 AbstractCegarLoop]: Abstraction has 1466 states and 1836 transitions. [2025-03-17 13:36:26,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2025-03-17 13:36:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1836 transitions. [2025-03-17 13:36:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-17 13:36:26,757 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:26,757 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:26,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 13:36:26,758 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr569REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:26,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:26,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2029448516, now seen corresponding path program 1 times [2025-03-17 13:36:26,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:26,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920959049] [2025-03-17 13:36:26,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:26,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:26,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-17 13:36:26,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-17 13:36:26,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:26,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:26,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:26,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920959049] [2025-03-17 13:36:26,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920959049] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:26,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:26,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:36:26,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799015410] [2025-03-17 13:36:26,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:26,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:36:26,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:26,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:36:26,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:36:26,855 INFO L87 Difference]: Start difference. First operand 1466 states and 1836 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2025-03-17 13:36:26,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:26,974 INFO L93 Difference]: Finished difference Result 1466 states and 1832 transitions. [2025-03-17 13:36:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:36:26,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2025-03-17 13:36:26,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:26,978 INFO L225 Difference]: With dead ends: 1466 [2025-03-17 13:36:26,979 INFO L226 Difference]: Without dead ends: 1466 [2025-03-17 13:36:26,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:36:26,980 INFO L435 NwaCegarLoop]: 1299 mSDtfsCounter, 21 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3866 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:26,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3866 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:36:26,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2025-03-17 13:36:26,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1466. [2025-03-17 13:36:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 986 states have (on average 1.8255578093306288) internal successors, (1800), 1457 states have internal predecessors, (1800), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1832 transitions. [2025-03-17 13:36:26,997 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1832 transitions. Word has length 58 [2025-03-17 13:36:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:26,997 INFO L471 AbstractCegarLoop]: Abstraction has 1466 states and 1832 transitions. [2025-03-17 13:36:26,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2025-03-17 13:36:26,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1832 transitions. [2025-03-17 13:36:26,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-17 13:36:26,999 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:26,999 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:26,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 13:36:26,999 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr569REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:26,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:26,999 INFO L85 PathProgramCache]: Analyzing trace with hash -148305652, now seen corresponding path program 1 times [2025-03-17 13:36:26,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:27,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714025547] [2025-03-17 13:36:27,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:27,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:27,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-17 13:36:27,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-17 13:36:27,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:27,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:27,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:27,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714025547] [2025-03-17 13:36:27,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714025547] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:27,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:27,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:36:27,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767704658] [2025-03-17 13:36:27,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:27,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:36:27,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:27,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:36:27,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:36:27,084 INFO L87 Difference]: Start difference. First operand 1466 states and 1832 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2025-03-17 13:36:27,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:27,153 INFO L93 Difference]: Finished difference Result 1556 states and 1949 transitions. [2025-03-17 13:36:27,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:36:27,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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 66 [2025-03-17 13:36:27,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:27,157 INFO L225 Difference]: With dead ends: 1556 [2025-03-17 13:36:27,157 INFO L226 Difference]: Without dead ends: 1556 [2025-03-17 13:36:27,157 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 [2025-03-17 13:36:27,158 INFO L435 NwaCegarLoop]: 1313 mSDtfsCounter, 54 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2599 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:27,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2599 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:36:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2025-03-17 13:36:27,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2025-03-17 13:36:27,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1076 states have (on average 1.7815985130111525) internal successors, (1917), 1547 states have internal predecessors, (1917), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:27,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 1949 transitions. [2025-03-17 13:36:27,175 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 1949 transitions. Word has length 66 [2025-03-17 13:36:27,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:27,175 INFO L471 AbstractCegarLoop]: Abstraction has 1556 states and 1949 transitions. [2025-03-17 13:36:27,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 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) [2025-03-17 13:36:27,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 1949 transitions. [2025-03-17 13:36:27,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-17 13:36:27,176 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:27,176 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:27,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 13:36:27,176 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr540REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:27,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:27,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1346712450, now seen corresponding path program 1 times [2025-03-17 13:36:27,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:27,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488956760] [2025-03-17 13:36:27,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:27,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:27,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-17 13:36:27,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-17 13:36:27,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:27,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:27,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:27,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488956760] [2025-03-17 13:36:27,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488956760] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:27,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:27,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 13:36:27,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253888962] [2025-03-17 13:36:27,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:27,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 13:36:27,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:27,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 13:36:27,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:36:27,572 INFO L87 Difference]: Start difference. First operand 1556 states and 1949 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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) [2025-03-17 13:36:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:28,516 INFO L93 Difference]: Finished difference Result 1472 states and 1865 transitions. [2025-03-17 13:36:28,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:36:28,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 69 [2025-03-17 13:36:28,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:28,521 INFO L225 Difference]: With dead ends: 1472 [2025-03-17 13:36:28,521 INFO L226 Difference]: Without dead ends: 1472 [2025-03-17 13:36:28,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:36:28,522 INFO L435 NwaCegarLoop]: 566 mSDtfsCounter, 2259 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2265 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:28,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2265 Valid, 1080 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 13:36:28,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2025-03-17 13:36:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1201. [2025-03-17 13:36:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 805 states have (on average 1.6782608695652175) internal successors, (1351), 1192 states have internal predecessors, (1351), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1383 transitions. [2025-03-17 13:36:28,544 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1383 transitions. Word has length 69 [2025-03-17 13:36:28,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:28,544 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 1383 transitions. [2025-03-17 13:36:28,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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) [2025-03-17 13:36:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1383 transitions. [2025-03-17 13:36:28,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-17 13:36:28,546 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:28,546 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:28,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 13:36:28,546 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr533REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:28,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1114205720, now seen corresponding path program 1 times [2025-03-17 13:36:28,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:28,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537052582] [2025-03-17 13:36:28,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:28,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:28,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-17 13:36:28,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-17 13:36:28,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:28,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:28,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:28,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:28,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537052582] [2025-03-17 13:36:28,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537052582] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:28,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:28,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:36:28,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534044020] [2025-03-17 13:36:28,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:28,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:36:28,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:28,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:36:28,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:36:28,782 INFO L87 Difference]: Start difference. First operand 1201 states and 1383 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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) [2025-03-17 13:36:29,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:29,447 INFO L93 Difference]: Finished difference Result 1200 states and 1382 transitions. [2025-03-17 13:36:29,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:36:29,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2025-03-17 13:36:29,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:29,450 INFO L225 Difference]: With dead ends: 1200 [2025-03-17 13:36:29,450 INFO L226 Difference]: Without dead ends: 1200 [2025-03-17 13:36:29,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:36:29,450 INFO L435 NwaCegarLoop]: 1225 mSDtfsCounter, 2 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3443 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:29,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3443 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 13:36:29,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2025-03-17 13:36:29,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1200. [2025-03-17 13:36:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 805 states have (on average 1.6770186335403727) internal successors, (1350), 1191 states have internal predecessors, (1350), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:29,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1382 transitions. [2025-03-17 13:36:29,463 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1382 transitions. Word has length 74 [2025-03-17 13:36:29,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:29,463 INFO L471 AbstractCegarLoop]: Abstraction has 1200 states and 1382 transitions. [2025-03-17 13:36:29,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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) [2025-03-17 13:36:29,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1382 transitions. [2025-03-17 13:36:29,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-17 13:36:29,464 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:29,464 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:29,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 13:36:29,464 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr534REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:29,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:29,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1114205721, now seen corresponding path program 1 times [2025-03-17 13:36:29,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:29,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133566158] [2025-03-17 13:36:29,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:29,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:29,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-17 13:36:29,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-17 13:36:29,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:29,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:29,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:29,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133566158] [2025-03-17 13:36:29,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133566158] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:29,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:29,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:36:29,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52890373] [2025-03-17 13:36:29,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:29,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:36:29,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:29,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:36:29,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:36:29,776 INFO L87 Difference]: Start difference. First operand 1200 states and 1382 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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) [2025-03-17 13:36:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:30,567 INFO L93 Difference]: Finished difference Result 1199 states and 1381 transitions. [2025-03-17 13:36:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:36:30,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2025-03-17 13:36:30,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:30,570 INFO L225 Difference]: With dead ends: 1199 [2025-03-17 13:36:30,570 INFO L226 Difference]: Without dead ends: 1199 [2025-03-17 13:36:30,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:36:30,571 INFO L435 NwaCegarLoop]: 1225 mSDtfsCounter, 1 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:30,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3458 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 13:36:30,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2025-03-17 13:36:30,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1199. [2025-03-17 13:36:30,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 804 states have (on average 1.677860696517413) internal successors, (1349), 1190 states have internal predecessors, (1349), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:30,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1381 transitions. [2025-03-17 13:36:30,582 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1381 transitions. Word has length 74 [2025-03-17 13:36:30,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:30,583 INFO L471 AbstractCegarLoop]: Abstraction has 1199 states and 1381 transitions. [2025-03-17 13:36:30,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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) [2025-03-17 13:36:30,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1381 transitions. [2025-03-17 13:36:30,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-17 13:36:30,584 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:30,584 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:30,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 13:36:30,584 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr529REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:30,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:30,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1601216747, now seen corresponding path program 1 times [2025-03-17 13:36:30,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:30,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67097661] [2025-03-17 13:36:30,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:30,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:30,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-17 13:36:30,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-17 13:36:30,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:30,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:30,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:30,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67097661] [2025-03-17 13:36:30,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67097661] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:30,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:30,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:36:30,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978551187] [2025-03-17 13:36:30,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:30,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:36:30,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:30,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:36:30,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:36:30,738 INFO L87 Difference]: Start difference. First operand 1199 states and 1381 transitions. Second operand has 7 states, 5 states have (on average 16.0) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:36:31,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:31,790 INFO L93 Difference]: Finished difference Result 1211 states and 1399 transitions. [2025-03-17 13:36:31,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:36:31,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 16.0) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2025-03-17 13:36:31,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:31,793 INFO L225 Difference]: With dead ends: 1211 [2025-03-17 13:36:31,793 INFO L226 Difference]: Without dead ends: 1211 [2025-03-17 13:36:31,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-17 13:36:31,794 INFO L435 NwaCegarLoop]: 1208 mSDtfsCounter, 12 mSDsluCounter, 4116 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5324 SdHoareTripleChecker+Invalid, 2244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:31,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5324 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 13:36:31,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2025-03-17 13:36:31,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1205. [2025-03-17 13:36:31,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 809 states have (on average 1.6761433868974043) internal successors, (1356), 1195 states have internal predecessors, (1356), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2025-03-17 13:36:31,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1394 transitions. [2025-03-17 13:36:31,806 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1394 transitions. Word has length 82 [2025-03-17 13:36:31,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:31,806 INFO L471 AbstractCegarLoop]: Abstraction has 1205 states and 1394 transitions. [2025-03-17 13:36:31,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 16.0) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:36:31,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1394 transitions. [2025-03-17 13:36:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-17 13:36:31,807 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:31,807 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:31,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 13:36:31,807 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:31,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:31,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1601216746, now seen corresponding path program 1 times [2025-03-17 13:36:31,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:31,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805614277] [2025-03-17 13:36:31,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:31,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:31,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-17 13:36:31,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-17 13:36:31,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:31,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:32,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:32,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:32,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805614277] [2025-03-17 13:36:32,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805614277] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:32,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:32,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 13:36:32,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575714828] [2025-03-17 13:36:32,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:32,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 13:36:32,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:32,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 13:36:32,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:36:32,122 INFO L87 Difference]: Start difference. First operand 1205 states and 1394 transitions. Second operand has 6 states, 5 states have (on average 16.0) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:36:33,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:33,182 INFO L93 Difference]: Finished difference Result 1205 states and 1393 transitions. [2025-03-17 13:36:33,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:36:33,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2025-03-17 13:36:33,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:33,185 INFO L225 Difference]: With dead ends: 1205 [2025-03-17 13:36:33,185 INFO L226 Difference]: Without dead ends: 1205 [2025-03-17 13:36:33,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:36:33,186 INFO L435 NwaCegarLoop]: 1215 mSDtfsCounter, 7 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:33,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4386 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 13:36:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2025-03-17 13:36:33,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1205. [2025-03-17 13:36:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 809 states have (on average 1.6749072929542645) internal successors, (1355), 1195 states have internal predecessors, (1355), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2025-03-17 13:36:33,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1393 transitions. [2025-03-17 13:36:33,197 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1393 transitions. Word has length 82 [2025-03-17 13:36:33,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:33,198 INFO L471 AbstractCegarLoop]: Abstraction has 1205 states and 1393 transitions. [2025-03-17 13:36:33,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:36:33,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1393 transitions. [2025-03-17 13:36:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-17 13:36:33,198 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:33,198 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:33,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 13:36:33,199 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr529REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:33,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:33,199 INFO L85 PathProgramCache]: Analyzing trace with hash -708990545, now seen corresponding path program 1 times [2025-03-17 13:36:33,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:33,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999344545] [2025-03-17 13:36:33,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:33,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:33,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 13:36:33,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 13:36:33,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:33,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:33,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:33,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999344545] [2025-03-17 13:36:33,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999344545] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:36:33,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252556981] [2025-03-17 13:36:33,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:33,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:36:33,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:36:33,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:36:33,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 13:36:33,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 13:36:33,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 13:36:33,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:33,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:33,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-17 13:36:33,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:36:33,701 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 [2025-03-17 13:36:33,795 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 13:36:33,796 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 [2025-03-17 13:36:33,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:36:33,856 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:36:33,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-17 13:36:33,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-17 13:36:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:33,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:36:33,927 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2025-03-17 13:36:33,927 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 21 treesize of output 20 [2025-03-17 13:36:33,937 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_503 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_503) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8)) |c_ULTIMATE.start_main_#t~mem50#1.base|)) is different from false [2025-03-17 13:36:33,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252556981] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:36:33,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:36:33,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2025-03-17 13:36:33,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300698628] [2025-03-17 13:36:33,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:36:33,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 13:36:33,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:33,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 13:36:33,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=151, Unknown=1, NotChecked=24, Total=210 [2025-03-17 13:36:33,941 INFO L87 Difference]: Start difference. First operand 1205 states and 1393 transitions. Second operand has 14 states, 12 states have (on average 9.833333333333334) internal successors, (118), 13 states have internal predecessors, (118), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:36:35,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:35,682 INFO L93 Difference]: Finished difference Result 1204 states and 1392 transitions. [2025-03-17 13:36:35,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 13:36:35,683 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.833333333333334) internal successors, (118), 13 states have internal predecessors, (118), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2025-03-17 13:36:35,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:35,686 INFO L225 Difference]: With dead ends: 1204 [2025-03-17 13:36:35,686 INFO L226 Difference]: Without dead ends: 1204 [2025-03-17 13:36:35,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=342, Unknown=1, NotChecked=38, Total=462 [2025-03-17 13:36:35,686 INFO L435 NwaCegarLoop]: 735 mSDtfsCounter, 1161 mSDsluCounter, 5611 mSDsCounter, 0 mSdLazyCounter, 4991 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 6346 SdHoareTripleChecker+Invalid, 5022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:35,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 6346 Invalid, 5022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4991 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-17 13:36:35,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2025-03-17 13:36:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1204. [2025-03-17 13:36:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 809 states have (on average 1.6736711990111248) internal successors, (1354), 1194 states have internal predecessors, (1354), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2025-03-17 13:36:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1392 transitions. [2025-03-17 13:36:35,698 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1392 transitions. Word has length 83 [2025-03-17 13:36:35,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:35,698 INFO L471 AbstractCegarLoop]: Abstraction has 1204 states and 1392 transitions. [2025-03-17 13:36:35,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.833333333333334) internal successors, (118), 13 states have internal predecessors, (118), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:36:35,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1392 transitions. [2025-03-17 13:36:35,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-17 13:36:35,699 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:35,699 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:35,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 13:36:35,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-17 13:36:35,903 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:35,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:35,905 INFO L85 PathProgramCache]: Analyzing trace with hash -708990544, now seen corresponding path program 1 times [2025-03-17 13:36:35,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:35,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474634339] [2025-03-17 13:36:35,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:35,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:35,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 13:36:35,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 13:36:35,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:35,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:36,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:36,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474634339] [2025-03-17 13:36:36,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474634339] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:36:36,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720191383] [2025-03-17 13:36:36,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:36,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:36:36,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:36:36,429 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:36:36,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 13:36:36,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 13:36:36,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 13:36:36,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:36,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:36,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-17 13:36:36,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:36:36,604 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 [2025-03-17 13:36:36,690 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 13:36:36,691 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 [2025-03-17 13:36:36,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-17 13:36:36,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:36:36,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-17 13:36:36,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-17 13:36:36,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2025-03-17 13:36:36,854 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:36:36,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-17 13:36:36,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:36:36,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-17 13:36:36,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2025-03-17 13:36:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:36,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:36:36,971 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_633 (Array Int Int)) (v_ArrVal_632 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_633) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_632) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_633 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_633) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 16))))) is different from false [2025-03-17 13:36:36,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720191383] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:36:36,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:36:36,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2025-03-17 13:36:36,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355649751] [2025-03-17 13:36:36,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:36:36,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 13:36:36,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:36,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 13:36:36,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=225, Unknown=1, NotChecked=30, Total=306 [2025-03-17 13:36:36,974 INFO L87 Difference]: Start difference. First operand 1204 states and 1392 transitions. Second operand has 15 states, 12 states have (on average 10.333333333333334) internal successors, (124), 15 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:36:39,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:39,178 INFO L93 Difference]: Finished difference Result 1211 states and 1399 transitions. [2025-03-17 13:36:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 13:36:39,179 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 10.333333333333334) internal successors, (124), 15 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 83 [2025-03-17 13:36:39,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:39,182 INFO L225 Difference]: With dead ends: 1211 [2025-03-17 13:36:39,182 INFO L226 Difference]: Without dead ends: 1211 [2025-03-17 13:36:39,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=345, Unknown=1, NotChecked=38, Total=462 [2025-03-17 13:36:39,182 INFO L435 NwaCegarLoop]: 740 mSDtfsCounter, 1161 mSDsluCounter, 4712 mSDsCounter, 0 mSdLazyCounter, 5900 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 5452 SdHoareTripleChecker+Invalid, 5949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 5900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:39,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 5452 Invalid, 5949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 5900 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-17 13:36:39,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2025-03-17 13:36:39,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1202. [2025-03-17 13:36:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 808 states have (on average 1.6732673267326732) internal successors, (1352), 1192 states have internal predecessors, (1352), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1384 transitions. [2025-03-17 13:36:39,200 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1384 transitions. Word has length 83 [2025-03-17 13:36:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:39,200 INFO L471 AbstractCegarLoop]: Abstraction has 1202 states and 1384 transitions. [2025-03-17 13:36:39,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 10.333333333333334) internal successors, (124), 15 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:36:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1384 transitions. [2025-03-17 13:36:39,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-17 13:36:39,201 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:39,201 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-03-17 13:36:39,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 13:36:39,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-17 13:36:39,405 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:39,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:39,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1940006861, now seen corresponding path program 1 times [2025-03-17 13:36:39,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:39,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514708025] [2025-03-17 13:36:39,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:39,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:39,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-17 13:36:39,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-17 13:36:39,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:39,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:39,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:39,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514708025] [2025-03-17 13:36:39,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514708025] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:39,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:39,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 13:36:39,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034609020] [2025-03-17 13:36:39,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:39,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 13:36:39,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:39,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 13:36:39,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-17 13:36:39,721 INFO L87 Difference]: Start difference. First operand 1202 states and 1384 transitions. Second operand has 14 states, 12 states have (on average 6.916666666666667) internal successors, (83), 13 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:36:41,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:41,510 INFO L93 Difference]: Finished difference Result 1215 states and 1403 transitions. [2025-03-17 13:36:41,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 13:36:41,511 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.916666666666667) internal successors, (83), 13 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2025-03-17 13:36:41,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:41,513 INFO L225 Difference]: With dead ends: 1215 [2025-03-17 13:36:41,513 INFO L226 Difference]: Without dead ends: 1215 [2025-03-17 13:36:41,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2025-03-17 13:36:41,514 INFO L435 NwaCegarLoop]: 734 mSDtfsCounter, 1169 mSDsluCounter, 6263 mSDsCounter, 0 mSdLazyCounter, 5590 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 6997 SdHoareTripleChecker+Invalid, 5621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 5590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:41,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 6997 Invalid, 5621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 5590 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 13:36:41,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2025-03-17 13:36:41,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1211. [2025-03-17 13:36:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 816 states have (on average 1.6691176470588236) internal successors, (1362), 1200 states have internal predecessors, (1362), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2025-03-17 13:36:41,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1395 transitions. [2025-03-17 13:36:41,525 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1395 transitions. Word has length 85 [2025-03-17 13:36:41,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:41,525 INFO L471 AbstractCegarLoop]: Abstraction has 1211 states and 1395 transitions. [2025-03-17 13:36:41,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.916666666666667) internal successors, (83), 13 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:36:41,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1395 transitions. [2025-03-17 13:36:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-17 13:36:41,526 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:41,526 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-03-17 13:36:41,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 13:36:41,526 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:41,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:41,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1940006860, now seen corresponding path program 1 times [2025-03-17 13:36:41,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:41,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023091338] [2025-03-17 13:36:41,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:41,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:41,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-17 13:36:41,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-17 13:36:41,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:41,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:41,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:41,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023091338] [2025-03-17 13:36:41,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023091338] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:41,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:41,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 13:36:41,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406456613] [2025-03-17 13:36:41,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:41,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 13:36:41,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:41,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 13:36:41,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-17 13:36:41,918 INFO L87 Difference]: Start difference. First operand 1211 states and 1395 transitions. Second operand has 11 states, 10 states have (on average 8.3) internal successors, (83), 11 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:36:43,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:43,723 INFO L93 Difference]: Finished difference Result 1214 states and 1402 transitions. [2025-03-17 13:36:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 13:36:43,724 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 11 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2025-03-17 13:36:43,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:43,726 INFO L225 Difference]: With dead ends: 1214 [2025-03-17 13:36:43,726 INFO L226 Difference]: Without dead ends: 1214 [2025-03-17 13:36:43,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2025-03-17 13:36:43,727 INFO L435 NwaCegarLoop]: 741 mSDtfsCounter, 1180 mSDsluCounter, 4183 mSDsCounter, 0 mSdLazyCounter, 5089 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 4924 SdHoareTripleChecker+Invalid, 5118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:43,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 4924 Invalid, 5118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5089 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 13:36:43,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2025-03-17 13:36:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1211. [2025-03-17 13:36:43,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 816 states have (on average 1.6678921568627452) internal successors, (1361), 1200 states have internal predecessors, (1361), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2025-03-17 13:36:43,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1394 transitions. [2025-03-17 13:36:43,742 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1394 transitions. Word has length 85 [2025-03-17 13:36:43,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:43,742 INFO L471 AbstractCegarLoop]: Abstraction has 1211 states and 1394 transitions. [2025-03-17 13:36:43,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 11 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:36:43,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1394 transitions. [2025-03-17 13:36:43,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-17 13:36:43,743 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:43,743 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-03-17 13:36:43,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 13:36:43,743 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:43,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1113149273, now seen corresponding path program 1 times [2025-03-17 13:36:43,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:43,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880862843] [2025-03-17 13:36:43,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:43,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:43,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-17 13:36:43,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 13:36:43,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:43,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:44,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:44,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880862843] [2025-03-17 13:36:44,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880862843] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:36:44,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693347074] [2025-03-17 13:36:44,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:44,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:36:44,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:36:44,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:36:44,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 13:36:44,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-17 13:36:44,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 13:36:44,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:44,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:44,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-17 13:36:44,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:36:44,213 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 [2025-03-17 13:36:44,402 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 13:36:44,402 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 [2025-03-17 13:36:44,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:36:44,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:36:44,565 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:36:44,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-17 13:36:44,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:36:44,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-03-17 13:36:44,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:36:44,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2025-03-17 13:36:44,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:36:44,693 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 13:36:44,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 16 [2025-03-17 13:36:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:44,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:36:46,956 INFO L349 Elim1Store]: treesize reduction 5, result has 83.3 percent of original size [2025-03-17 13:36:46,957 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 34 treesize of output 33 [2025-03-17 13:36:46,973 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~mem52#1.offset_11| Int) (v_ArrVal_890 (Array Int Int)) (|ULTIMATE.start_main_#t~mem52#1.base| Int) (v_ArrVal_891 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (or (< |v_ULTIMATE.start_main_#t~mem52#1.offset_11| (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_890))) (store .cse1 |ULTIMATE.start_main_#t~mem52#1.base| (store (select .cse1 |ULTIMATE.start_main_#t~mem52#1.base|) (+ |v_ULTIMATE.start_main_#t~mem52#1.offset_11| 16) |c_ULTIMATE.start_main_~user~0#1.base|))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) |c_ULTIMATE.start_main_#t~mem50#1.base|)))) is different from false [2025-03-17 13:36:46,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693347074] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:36:46,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:36:46,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2025-03-17 13:36:46,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960447649] [2025-03-17 13:36:46,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:36:46,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 13:36:46,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:46,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 13:36:46,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=524, Unknown=2, NotChecked=46, Total=650 [2025-03-17 13:36:46,975 INFO L87 Difference]: Start difference. First operand 1211 states and 1394 transitions. Second operand has 23 states, 20 states have (on average 8.3) internal successors, (166), 22 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:36:49,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:49,894 INFO L93 Difference]: Finished difference Result 1759 states and 2036 transitions. [2025-03-17 13:36:49,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 13:36:49,895 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 8.3) internal successors, (166), 22 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 86 [2025-03-17 13:36:49,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:49,898 INFO L225 Difference]: With dead ends: 1759 [2025-03-17 13:36:49,898 INFO L226 Difference]: Without dead ends: 1759 [2025-03-17 13:36:49,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=173, Invalid=951, Unknown=2, NotChecked=64, Total=1190 [2025-03-17 13:36:49,899 INFO L435 NwaCegarLoop]: 734 mSDtfsCounter, 2781 mSDsluCounter, 8127 mSDsCounter, 0 mSdLazyCounter, 7014 mSolverCounterSat, 73 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2807 SdHoareTripleChecker+Valid, 8861 SdHoareTripleChecker+Invalid, 7088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 7014 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:49,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2807 Valid, 8861 Invalid, 7088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 7014 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2025-03-17 13:36:49,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2025-03-17 13:36:49,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1210. [2025-03-17 13:36:49,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 816 states have (on average 1.6666666666666667) internal successors, (1360), 1199 states have internal predecessors, (1360), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2025-03-17 13:36:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1393 transitions. [2025-03-17 13:36:49,911 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1393 transitions. Word has length 86 [2025-03-17 13:36:49,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:49,912 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 1393 transitions. [2025-03-17 13:36:49,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 8.3) internal successors, (166), 22 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:36:49,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1393 transitions. [2025-03-17 13:36:49,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-17 13:36:49,912 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:49,912 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-03-17 13:36:49,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 13:36:50,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:36:50,117 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:50,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:50,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1113149274, now seen corresponding path program 1 times [2025-03-17 13:36:50,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:50,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898141164] [2025-03-17 13:36:50,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:50,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:50,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-17 13:36:50,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 13:36:50,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:50,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:50,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898141164] [2025-03-17 13:36:50,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898141164] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:36:50,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621789665] [2025-03-17 13:36:50,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:50,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:36:50,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:36:50,552 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:36:50,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 13:36:50,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-17 13:36:50,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 13:36:50,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:50,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:50,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-17 13:36:50,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:36:50,725 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 [2025-03-17 13:36:50,803 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 13:36:50,803 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 [2025-03-17 13:36:50,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-17 13:36:50,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:36:50,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-17 13:36:50,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-17 13:36:50,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2025-03-17 13:36:50,947 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:36:50,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-17 13:36:50,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:36:51,001 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:36:51,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-17 13:36:51,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:36:51,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-17 13:36:51,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2025-03-17 13:36:51,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:51,036 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:36:51,084 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1028 (Array Int Int))) (<= 0 (+ 4 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1028) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1029 (Array Int Int)) (v_ArrVal_1028 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1028) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1029) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-03-17 13:36:51,094 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1029 (Array Int Int)) (v_ArrVal_1028 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1028) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1029) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_1028 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1028) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4)))))) is different from false [2025-03-17 13:36:51,132 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1029 (Array Int Int)) (v_ArrVal_1028 (Array Int Int)) (v_ArrVal_1035 (Array Int Int)) (v_ArrVal_1034 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1034))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1035) .cse0 v_ArrVal_1028) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1029) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1028 (Array Int Int)) (v_ArrVal_1035 (Array Int Int)) (v_ArrVal_1034 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1035) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1034) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1028) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4))))) is different from false [2025-03-17 13:36:51,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621789665] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:36:51,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:36:51,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2025-03-17 13:36:51,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621782406] [2025-03-17 13:36:51,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:36:51,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 13:36:51,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:51,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 13:36:51,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=397, Unknown=3, NotChecked=126, Total=600 [2025-03-17 13:36:51,134 INFO L87 Difference]: Start difference. First operand 1210 states and 1393 transitions. Second operand has 20 states, 17 states have (on average 8.0) internal successors, (136), 20 states have internal predecessors, (136), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:36:54,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:54,705 INFO L93 Difference]: Finished difference Result 1212 states and 1400 transitions. [2025-03-17 13:36:54,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 13:36:54,706 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.0) internal successors, (136), 20 states have internal predecessors, (136), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 86 [2025-03-17 13:36:54,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:54,707 INFO L225 Difference]: With dead ends: 1212 [2025-03-17 13:36:54,708 INFO L226 Difference]: Without dead ends: 1212 [2025-03-17 13:36:54,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=594, Unknown=3, NotChecked=156, Total=870 [2025-03-17 13:36:54,708 INFO L435 NwaCegarLoop]: 739 mSDtfsCounter, 1157 mSDsluCounter, 6848 mSDsCounter, 0 mSdLazyCounter, 8747 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 7587 SdHoareTripleChecker+Invalid, 8781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 8747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:54,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 7587 Invalid, 8781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 8747 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2025-03-17 13:36:54,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2025-03-17 13:36:54,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1200. [2025-03-17 13:36:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 808 states have (on average 1.6707920792079207) internal successors, (1350), 1190 states have internal predecessors, (1350), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:36:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1382 transitions. [2025-03-17 13:36:54,718 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1382 transitions. Word has length 86 [2025-03-17 13:36:54,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:54,718 INFO L471 AbstractCegarLoop]: Abstraction has 1200 states and 1382 transitions. [2025-03-17 13:36:54,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.0) internal successors, (136), 20 states have internal predecessors, (136), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:36:54,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1382 transitions. [2025-03-17 13:36:54,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-17 13:36:54,719 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:54,719 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:54,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 13:36:54,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:36:54,919 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr521REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:54,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:54,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1663154386, now seen corresponding path program 1 times [2025-03-17 13:36:54,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:54,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561966861] [2025-03-17 13:36:54,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:54,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:54,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-17 13:36:54,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-17 13:36:54,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:54,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:55,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:55,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561966861] [2025-03-17 13:36:55,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561966861] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:55,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:55,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 13:36:55,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698599059] [2025-03-17 13:36:55,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:55,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 13:36:55,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:55,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 13:36:55,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-03-17 13:36:55,240 INFO L87 Difference]: Start difference. First operand 1200 states and 1382 transitions. Second operand has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:36:57,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:57,069 INFO L93 Difference]: Finished difference Result 1216 states and 1404 transitions. [2025-03-17 13:36:57,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 13:36:57,069 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2025-03-17 13:36:57,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:57,071 INFO L225 Difference]: With dead ends: 1216 [2025-03-17 13:36:57,071 INFO L226 Difference]: Without dead ends: 1216 [2025-03-17 13:36:57,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2025-03-17 13:36:57,073 INFO L435 NwaCegarLoop]: 733 mSDtfsCounter, 1172 mSDsluCounter, 6270 mSDsCounter, 0 mSdLazyCounter, 5566 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 7003 SdHoareTripleChecker+Invalid, 5597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 5566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:57,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 7003 Invalid, 5597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 5566 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 13:36:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2025-03-17 13:36:57,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1212. [2025-03-17 13:36:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 819 states have (on average 1.6642246642246643) internal successors, (1363), 1201 states have internal predecessors, (1363), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2025-03-17 13:36:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1396 transitions. [2025-03-17 13:36:57,082 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1396 transitions. Word has length 88 [2025-03-17 13:36:57,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:57,082 INFO L471 AbstractCegarLoop]: Abstraction has 1212 states and 1396 transitions. [2025-03-17 13:36:57,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:36:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1396 transitions. [2025-03-17 13:36:57,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-17 13:36:57,083 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:57,083 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:57,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-17 13:36:57,083 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr522REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:57,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:57,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1663154385, now seen corresponding path program 1 times [2025-03-17 13:36:57,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:57,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126335418] [2025-03-17 13:36:57,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:57,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:57,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-17 13:36:57,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-17 13:36:57,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:57,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:36:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:36:57,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:36:57,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126335418] [2025-03-17 13:36:57,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126335418] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:36:57,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:36:57,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 13:36:57,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657177688] [2025-03-17 13:36:57,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:36:57,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 13:36:57,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:36:57,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 13:36:57,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-17 13:36:57,596 INFO L87 Difference]: Start difference. First operand 1212 states and 1396 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:36:59,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:36:59,799 INFO L93 Difference]: Finished difference Result 1215 states and 1403 transitions. [2025-03-17 13:36:59,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:36:59,799 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2025-03-17 13:36:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:36:59,801 INFO L225 Difference]: With dead ends: 1215 [2025-03-17 13:36:59,801 INFO L226 Difference]: Without dead ends: 1215 [2025-03-17 13:36:59,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2025-03-17 13:36:59,801 INFO L435 NwaCegarLoop]: 740 mSDtfsCounter, 1164 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 5851 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 5451 SdHoareTripleChecker+Invalid, 5880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:36:59,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 5451 Invalid, 5880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5851 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-17 13:36:59,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2025-03-17 13:36:59,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1212. [2025-03-17 13:36:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 819 states have (on average 1.663003663003663) internal successors, (1362), 1201 states have internal predecessors, (1362), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2025-03-17 13:36:59,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1395 transitions. [2025-03-17 13:36:59,810 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1395 transitions. Word has length 88 [2025-03-17 13:36:59,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:36:59,810 INFO L471 AbstractCegarLoop]: Abstraction has 1212 states and 1395 transitions. [2025-03-17 13:36:59,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:36:59,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1395 transitions. [2025-03-17 13:36:59,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-17 13:36:59,811 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:36:59,811 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:36:59,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-17 13:36:59,811 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr521REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:36:59,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:36:59,811 INFO L85 PathProgramCache]: Analyzing trace with hash 388806216, now seen corresponding path program 1 times [2025-03-17 13:36:59,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:36:59,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636619110] [2025-03-17 13:36:59,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:36:59,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:36:59,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-17 13:36:59,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-17 13:36:59,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:36:59,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:00,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:37:00,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636619110] [2025-03-17 13:37:00,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636619110] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:37:00,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332760324] [2025-03-17 13:37:00,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:00,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:00,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:00,202 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:37:00,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 13:37:00,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-17 13:37:00,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-17 13:37:00,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:00,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:00,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-17 13:37:00,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:00,385 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 [2025-03-17 13:37:00,461 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 13:37:00,461 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 [2025-03-17 13:37:00,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:37:00,518 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:00,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-17 13:37:00,547 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:00,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-17 13:37:00,577 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:00,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-17 13:37:00,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-17 13:37:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:00,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:37:00,614 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1309 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1309) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2025-03-17 13:37:00,620 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1309 (Array Int Int)) (v_ArrVal_1308 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1308))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1309)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-17 13:37:00,625 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1309 (Array Int Int)) (v_ArrVal_1308 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1308))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1309)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-17 13:37:00,651 INFO L349 Elim1Store]: treesize reduction 5, result has 90.6 percent of original size [2025-03-17 13:37:00,651 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 57 treesize of output 56 [2025-03-17 13:37:00,654 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1312 (Array Int Int)) (v_ArrVal_1309 (Array Int Int)) (v_ArrVal_1308 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem50#1.base| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1312))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1308)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1309)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2025-03-17 13:37:00,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332760324] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:37:00,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:37:00,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 18 [2025-03-17 13:37:00,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773433380] [2025-03-17 13:37:00,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:37:00,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 13:37:00,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:37:00,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 13:37:00,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=317, Unknown=12, NotChecked=156, Total=552 [2025-03-17 13:37:00,656 INFO L87 Difference]: Start difference. First operand 1212 states and 1395 transitions. Second operand has 19 states, 17 states have (on average 7.882352941176471) internal successors, (134), 19 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:37:02,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:02,571 INFO L93 Difference]: Finished difference Result 1214 states and 1402 transitions. [2025-03-17 13:37:02,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 13:37:02,572 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 7.882352941176471) internal successors, (134), 19 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 89 [2025-03-17 13:37:02,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:02,574 INFO L225 Difference]: With dead ends: 1214 [2025-03-17 13:37:02,574 INFO L226 Difference]: Without dead ends: 1214 [2025-03-17 13:37:02,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=627, Unknown=17, NotChecked=220, Total=992 [2025-03-17 13:37:02,575 INFO L435 NwaCegarLoop]: 733 mSDtfsCounter, 1157 mSDsluCounter, 6256 mSDsCounter, 0 mSdLazyCounter, 5586 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 6989 SdHoareTripleChecker+Invalid, 5617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 5586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:02,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 6989 Invalid, 5617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 5586 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 13:37:02,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2025-03-17 13:37:02,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1211. [2025-03-17 13:37:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 819 states have (on average 1.6617826617826619) internal successors, (1361), 1200 states have internal predecessors, (1361), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2025-03-17 13:37:02,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1394 transitions. [2025-03-17 13:37:02,588 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1394 transitions. Word has length 89 [2025-03-17 13:37:02,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:02,588 INFO L471 AbstractCegarLoop]: Abstraction has 1211 states and 1394 transitions. [2025-03-17 13:37:02,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 7.882352941176471) internal successors, (134), 19 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:37:02,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1394 transitions. [2025-03-17 13:37:02,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-17 13:37:02,589 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:02,589 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:02,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 13:37:02,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-17 13:37:02,790 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr522REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:37:02,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:02,790 INFO L85 PathProgramCache]: Analyzing trace with hash 388806217, now seen corresponding path program 1 times [2025-03-17 13:37:02,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:37:02,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154928769] [2025-03-17 13:37:02,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:02,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:37:02,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-17 13:37:02,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-17 13:37:02,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:02,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:03,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:37:03,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154928769] [2025-03-17 13:37:03,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154928769] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:37:03,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917874525] [2025-03-17 13:37:03,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:03,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:03,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:03,325 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:37:03,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 13:37:03,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-17 13:37:03,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-17 13:37:03,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:03,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:03,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-17 13:37:03,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:03,492 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 [2025-03-17 13:37:03,547 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 13:37:03,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-17 13:37:03,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:37:03,615 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:03,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2025-03-17 13:37:03,650 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2025-03-17 13:37:03,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 41 [2025-03-17 13:37:03,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:37:03,745 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2025-03-17 13:37:03,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 66 [2025-03-17 13:37:03,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 22 [2025-03-17 13:37:03,751 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 7 treesize of output 3 [2025-03-17 13:37:03,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2025-03-17 13:37:03,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 34 treesize of output 16 [2025-03-17 13:37:03,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:03,797 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:37:03,924 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 13:37:03,924 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 112 treesize of output 116 [2025-03-17 13:37:03,981 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base|) (+ |c_ULTIMATE.start_main_#t~mem52#1.offset| 16) |c_ULTIMATE.start_main_~user~0#1.base|))) (.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1457 (Array Int Int)) (v_prenex_6 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1457))) (or (< (+ (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0) (< 0 (+ 9 (select (select (store .cse0 .cse2 v_prenex_6) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1457 (Array Int Int)) (v_ArrVal_1460 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1457))) (or (< (+ (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0) (< (select (select (store .cse3 .cse2 v_ArrVal_1460) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (+ |c_ULTIMATE.start_main_#t~mem52#1.offset| 9))))) (or (forall ((v_ArrVal_1459 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem52#1.base| (select (select (store .cse4 .cse2 v_ArrVal_1459) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1457 (Array Int Int))) (< (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1457) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0)) (forall ((v_ArrVal_1457 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1457))) (or (< (+ (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0) (forall ((v_prenex_6 (Array Int Int))) (<= 0 (+ (select (select (store .cse5 .cse2 v_prenex_6) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8))))))))))) is different from false [2025-03-17 13:37:04,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 992 treesize of output 938 [2025-03-17 13:37:04,015 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 710 treesize of output 702 [2025-03-17 13:37:04,020 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 702 treesize of output 694 [2025-03-17 13:37:04,025 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 694 treesize of output 690 [2025-03-17 13:37:04,030 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 690 treesize of output 682 [2025-03-17 13:37:04,036 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 682 treesize of output 674 [2025-03-17 13:37:04,041 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 674 treesize of output 666 [2025-03-17 13:37:04,045 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 666 treesize of output 658 [2025-03-17 13:37:04,115 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1463 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~user~0#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1463) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))))) is different from false [2025-03-17 13:37:04,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917874525] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:37:04,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:37:04,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2025-03-17 13:37:04,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970848351] [2025-03-17 13:37:04,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:37:04,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 13:37:04,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:37:04,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 13:37:04,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=661, Unknown=2, NotChecked=106, Total=870 [2025-03-17 13:37:04,118 INFO L87 Difference]: Start difference. First operand 1211 states and 1394 transitions. Second operand has 24 states, 21 states have (on average 6.761904761904762) internal successors, (142), 24 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:37:07,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:07,511 INFO L93 Difference]: Finished difference Result 1213 states and 1401 transitions. [2025-03-17 13:37:07,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 13:37:07,515 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 6.761904761904762) internal successors, (142), 24 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 89 [2025-03-17 13:37:07,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:07,517 INFO L225 Difference]: With dead ends: 1213 [2025-03-17 13:37:07,517 INFO L226 Difference]: Without dead ends: 1213 [2025-03-17 13:37:07,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=1016, Unknown=2, NotChecked=134, Total=1332 [2025-03-17 13:37:07,518 INFO L435 NwaCegarLoop]: 739 mSDtfsCounter, 1168 mSDsluCounter, 7395 mSDsCounter, 0 mSdLazyCounter, 8175 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 8134 SdHoareTripleChecker+Invalid, 8240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 8175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:07,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 8134 Invalid, 8240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 8175 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-03-17 13:37:07,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2025-03-17 13:37:07,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1198. [2025-03-17 13:37:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 808 states have (on average 1.6683168316831682) internal successors, (1348), 1188 states have internal predecessors, (1348), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:37:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1380 transitions. [2025-03-17 13:37:07,528 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1380 transitions. Word has length 89 [2025-03-17 13:37:07,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:07,528 INFO L471 AbstractCegarLoop]: Abstraction has 1198 states and 1380 transitions. [2025-03-17 13:37:07,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 6.761904761904762) internal successors, (142), 24 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:37:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1380 transitions. [2025-03-17 13:37:07,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-17 13:37:07,530 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:07,530 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:07,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 13:37:07,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:07,731 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr517REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:37:07,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:07,731 INFO L85 PathProgramCache]: Analyzing trace with hash -288286932, now seen corresponding path program 1 times [2025-03-17 13:37:07,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:37:07,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395365642] [2025-03-17 13:37:07,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:07,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:37:07,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-17 13:37:07,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-17 13:37:07,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:07,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:08,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:37:08,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395365642] [2025-03-17 13:37:08,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395365642] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:37:08,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:37:08,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-17 13:37:08,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113397937] [2025-03-17 13:37:08,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:37:08,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 13:37:08,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:37:08,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 13:37:08,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-03-17 13:37:08,085 INFO L87 Difference]: Start difference. First operand 1198 states and 1380 transitions. Second operand has 16 states, 14 states have (on average 6.357142857142857) internal successors, (89), 15 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:37:10,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:10,112 INFO L93 Difference]: Finished difference Result 1217 states and 1405 transitions. [2025-03-17 13:37:10,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 13:37:10,112 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.357142857142857) internal successors, (89), 15 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2025-03-17 13:37:10,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:10,114 INFO L225 Difference]: With dead ends: 1217 [2025-03-17 13:37:10,114 INFO L226 Difference]: Without dead ends: 1217 [2025-03-17 13:37:10,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2025-03-17 13:37:10,114 INFO L435 NwaCegarLoop]: 732 mSDtfsCounter, 1167 mSDsluCounter, 6935 mSDsCounter, 0 mSdLazyCounter, 6175 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 7667 SdHoareTripleChecker+Invalid, 6205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 6175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:10,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 7667 Invalid, 6205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 6175 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-17 13:37:10,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2025-03-17 13:37:10,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1213. [2025-03-17 13:37:10,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 822 states have (on average 1.659367396593674) internal successors, (1364), 1202 states have internal predecessors, (1364), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2025-03-17 13:37:10,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1397 transitions. [2025-03-17 13:37:10,122 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1397 transitions. Word has length 91 [2025-03-17 13:37:10,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:10,122 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1397 transitions. [2025-03-17 13:37:10,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.357142857142857) internal successors, (89), 15 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:37:10,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1397 transitions. [2025-03-17 13:37:10,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-17 13:37:10,122 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:10,122 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:10,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-17 13:37:10,122 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr518REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:37:10,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:10,123 INFO L85 PathProgramCache]: Analyzing trace with hash -288286931, now seen corresponding path program 1 times [2025-03-17 13:37:10,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:37:10,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780406762] [2025-03-17 13:37:10,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:10,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:37:10,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-17 13:37:10,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-17 13:37:10,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:10,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:10,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:37:10,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780406762] [2025-03-17 13:37:10,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780406762] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:37:10,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:37:10,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 13:37:10,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409136700] [2025-03-17 13:37:10,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:37:10,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 13:37:10,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:37:10,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 13:37:10,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-03-17 13:37:10,583 INFO L87 Difference]: Start difference. First operand 1213 states and 1397 transitions. Second operand has 13 states, 12 states have (on average 7.416666666666667) internal successors, (89), 13 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:37:12,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:12,698 INFO L93 Difference]: Finished difference Result 1216 states and 1404 transitions. [2025-03-17 13:37:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 13:37:12,698 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.416666666666667) internal successors, (89), 13 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2025-03-17 13:37:12,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:12,700 INFO L225 Difference]: With dead ends: 1216 [2025-03-17 13:37:12,700 INFO L226 Difference]: Without dead ends: 1216 [2025-03-17 13:37:12,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2025-03-17 13:37:12,700 INFO L435 NwaCegarLoop]: 739 mSDtfsCounter, 1183 mSDsluCounter, 4707 mSDsCounter, 0 mSdLazyCounter, 5804 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 5446 SdHoareTripleChecker+Invalid, 5833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:12,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 5446 Invalid, 5833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5804 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-17 13:37:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2025-03-17 13:37:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1213. [2025-03-17 13:37:12,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 822 states have (on average 1.6581508515815084) internal successors, (1363), 1202 states have internal predecessors, (1363), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2025-03-17 13:37:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1396 transitions. [2025-03-17 13:37:12,707 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1396 transitions. Word has length 91 [2025-03-17 13:37:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:12,708 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1396 transitions. [2025-03-17 13:37:12,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.416666666666667) internal successors, (89), 13 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:37:12,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1396 transitions. [2025-03-17 13:37:12,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-17 13:37:12,708 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:12,708 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:12,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-17 13:37:12,708 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr517REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:37:12,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:12,709 INFO L85 PathProgramCache]: Analyzing trace with hash -599516718, now seen corresponding path program 1 times [2025-03-17 13:37:12,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:37:12,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617098071] [2025-03-17 13:37:12,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:12,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:37:12,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-17 13:37:12,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-17 13:37:12,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:12,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:13,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:37:13,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617098071] [2025-03-17 13:37:13,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617098071] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:37:13,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636159248] [2025-03-17 13:37:13,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:13,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:13,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:13,076 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:37:13,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 13:37:13,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-17 13:37:13,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-17 13:37:13,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:13,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:13,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-17 13:37:13,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:13,254 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 [2025-03-17 13:37:13,321 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 13:37:13,322 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 [2025-03-17 13:37:13,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:37:13,354 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:13,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2025-03-17 13:37:13,377 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:13,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2025-03-17 13:37:13,400 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:13,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-17 13:37:13,429 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:13,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-17 13:37:13,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-17 13:37:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:13,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:37:13,442 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1762 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1762) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2025-03-17 13:37:13,473 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2025-03-17 13:37:13,474 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 33 treesize of output 32 [2025-03-17 13:37:13,536 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1760 (Array Int Int))) (not (= (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1760) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) |c_ULTIMATE.start_main_~user~0#1.base|))) is different from false [2025-03-17 13:37:13,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636159248] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:37:13,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:37:13,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 17 [2025-03-17 13:37:13,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928286116] [2025-03-17 13:37:13,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:37:13,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 13:37:13,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:37:13,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 13:37:13,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=386, Unknown=17, NotChecked=82, Total=552 [2025-03-17 13:37:13,576 INFO L87 Difference]: Start difference. First operand 1213 states and 1396 transitions. Second operand has 18 states, 16 states have (on average 8.3125) internal successors, (133), 18 states have internal predecessors, (133), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:37:15,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:15,669 INFO L93 Difference]: Finished difference Result 1215 states and 1403 transitions. [2025-03-17 13:37:15,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 13:37:15,670 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 8.3125) internal successors, (133), 18 states have internal predecessors, (133), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2025-03-17 13:37:15,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:15,671 INFO L225 Difference]: With dead ends: 1215 [2025-03-17 13:37:15,671 INFO L226 Difference]: Without dead ends: 1215 [2025-03-17 13:37:15,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=731, Unknown=17, NotChecked=114, Total=992 [2025-03-17 13:37:15,672 INFO L435 NwaCegarLoop]: 738 mSDtfsCounter, 1157 mSDsluCounter, 7003 mSDsCounter, 0 mSdLazyCounter, 6049 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 7741 SdHoareTripleChecker+Invalid, 6094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 6049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:15,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 7741 Invalid, 6094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 6049 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-17 13:37:15,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2025-03-17 13:37:15,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1212. [2025-03-17 13:37:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 822 states have (on average 1.6569343065693432) internal successors, (1362), 1201 states have internal predecessors, (1362), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2025-03-17 13:37:15,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1395 transitions. [2025-03-17 13:37:15,680 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1395 transitions. Word has length 92 [2025-03-17 13:37:15,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:15,680 INFO L471 AbstractCegarLoop]: Abstraction has 1212 states and 1395 transitions. [2025-03-17 13:37:15,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 8.3125) internal successors, (133), 18 states have internal predecessors, (133), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:37:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1395 transitions. [2025-03-17 13:37:15,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-17 13:37:15,680 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:15,680 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:15,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-17 13:37:15,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:15,881 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr518REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:37:15,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:15,881 INFO L85 PathProgramCache]: Analyzing trace with hash -599516717, now seen corresponding path program 1 times [2025-03-17 13:37:15,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:37:15,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397542841] [2025-03-17 13:37:15,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:15,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:37:15,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-17 13:37:15,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-17 13:37:15,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:15,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:16,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:37:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397542841] [2025-03-17 13:37:16,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397542841] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:37:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284029809] [2025-03-17 13:37:16,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:16,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:16,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:16,397 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:37:16,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 13:37:16,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-17 13:37:16,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-17 13:37:16,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:16,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:16,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-17 13:37:16,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:16,580 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 [2025-03-17 13:37:16,650 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 13:37:16,651 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 [2025-03-17 13:37:16,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-17 13:37:16,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:37:16,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-17 13:37:16,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-17 13:37:16,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2025-03-17 13:37:16,799 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:16,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-17 13:37:16,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:37:16,862 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:16,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-17 13:37:16,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:37:16,898 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:16,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-17 13:37:16,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:37:16,935 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:16,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-17 13:37:16,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:37:16,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-17 13:37:16,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2025-03-17 13:37:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:16,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:37:17,016 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1931 (Array Int Int)) (v_ArrVal_1930 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1931) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1931 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1931) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20))))) is different from false [2025-03-17 13:37:17,070 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1931 (Array Int Int)) (v_ArrVal_1930 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1929))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1928) .cse0 v_ArrVal_1931) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1931 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1928) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1931) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))))) is different from false [2025-03-17 13:37:17,079 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_1931 (Array Int Int)) (v_ArrVal_1930 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1929))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1928) .cse1 v_ArrVal_1931) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_1930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_1931 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int))) (<= 0 (+ 20 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1928) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1931) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2025-03-17 13:37:17,097 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1931 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1926))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1927) .cse0 v_ArrVal_1928) (select (select (store .cse1 .cse0 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1931))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))) (forall ((v_ArrVal_1931 (Array Int Int)) (v_ArrVal_1930 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1926))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_1929))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1927) .cse3 v_ArrVal_1928) .cse4 v_ArrVal_1931) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) is different from false [2025-03-17 13:37:17,108 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_1931 (Array Int Int)) (v_ArrVal_1930 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1926))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_1929))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1927) .cse1 v_ArrVal_1928) .cse2 v_ArrVal_1931) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_1930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_1931 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1926))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1927) .cse6 v_ArrVal_1928) (select (select (store .cse7 .cse6 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1931))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 20)))))) is different from false [2025-03-17 13:37:17,153 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1931 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1937 (Array Int Int)) (v_ArrVal_1926 (Array Int Int)) (v_ArrVal_1936 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1937))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_1926))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1936) .cse0 v_ArrVal_1927) .cse1 v_ArrVal_1928) (select (select (store .cse2 .cse1 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1931))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (forall ((v_ArrVal_1931 (Array Int Int)) (v_ArrVal_1930 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1937 (Array Int Int)) (v_ArrVal_1926 (Array Int Int)) (v_ArrVal_1936 (Array Int Int))) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1937))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_1926))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_1929))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ 24 (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1936) .cse5 v_ArrVal_1927) .cse6 v_ArrVal_1928) .cse7 v_ArrVal_1931) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse8 .cse7 v_ArrVal_1930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))))) is different from false [2025-03-17 13:37:17,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284029809] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:37:17,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:37:17,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2025-03-17 13:37:17,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255900640] [2025-03-17 13:37:17,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:37:17,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 13:37:17,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:37:17,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 13:37:17,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=599, Unknown=16, NotChecked=330, Total=1056 [2025-03-17 13:37:17,157 INFO L87 Difference]: Start difference. First operand 1212 states and 1395 transitions. Second operand has 24 states, 21 states have (on average 7.0476190476190474) internal successors, (148), 24 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:37:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:20,466 INFO L93 Difference]: Finished difference Result 1214 states and 1402 transitions. [2025-03-17 13:37:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 13:37:20,466 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.0476190476190474) internal successors, (148), 24 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 92 [2025-03-17 13:37:20,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:20,468 INFO L225 Difference]: With dead ends: 1214 [2025-03-17 13:37:20,468 INFO L226 Difference]: Without dead ends: 1214 [2025-03-17 13:37:20,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=950, Unknown=16, NotChecked=414, Total=1560 [2025-03-17 13:37:20,468 INFO L435 NwaCegarLoop]: 737 mSDtfsCounter, 1160 mSDsluCounter, 6813 mSDsCounter, 0 mSdLazyCounter, 8727 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 7550 SdHoareTripleChecker+Invalid, 8775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 8727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:20,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 7550 Invalid, 8775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 8727 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-17 13:37:20,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2025-03-17 13:37:20,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1196. [2025-03-17 13:37:20,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 808 states have (on average 1.6658415841584158) internal successors, (1346), 1186 states have internal predecessors, (1346), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:37:20,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1378 transitions. [2025-03-17 13:37:20,476 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1378 transitions. Word has length 92 [2025-03-17 13:37:20,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:20,476 INFO L471 AbstractCegarLoop]: Abstraction has 1196 states and 1378 transitions. [2025-03-17 13:37:20,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.0476190476190474) internal successors, (148), 24 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:37:20,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1378 transitions. [2025-03-17 13:37:20,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-17 13:37:20,476 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:20,477 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:20,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 13:37:20,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-17 13:37:20,677 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr513REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:37:20,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:20,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1732061926, now seen corresponding path program 1 times [2025-03-17 13:37:20,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:37:20,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485528641] [2025-03-17 13:37:20,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:20,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:37:20,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-17 13:37:20,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-17 13:37:20,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:20,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:21,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:21,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:37:21,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485528641] [2025-03-17 13:37:21,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485528641] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:37:21,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:37:21,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-17 13:37:21,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516345758] [2025-03-17 13:37:21,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:37:21,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 13:37:21,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:37:21,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 13:37:21,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2025-03-17 13:37:21,118 INFO L87 Difference]: Start difference. First operand 1196 states and 1378 transitions. Second operand has 17 states, 15 states have (on average 6.2) internal successors, (93), 16 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:37:22,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:22,838 INFO L93 Difference]: Finished difference Result 1219 states and 1407 transitions. [2025-03-17 13:37:22,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 13:37:22,838 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.2) internal successors, (93), 16 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2025-03-17 13:37:22,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:22,840 INFO L225 Difference]: With dead ends: 1219 [2025-03-17 13:37:22,840 INFO L226 Difference]: Without dead ends: 1219 [2025-03-17 13:37:22,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2025-03-17 13:37:22,841 INFO L435 NwaCegarLoop]: 731 mSDtfsCounter, 1185 mSDsluCounter, 5582 mSDsCounter, 0 mSdLazyCounter, 5064 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 6313 SdHoareTripleChecker+Invalid, 5096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:22,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1205 Valid, 6313 Invalid, 5096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 5064 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-17 13:37:22,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2025-03-17 13:37:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1215. [2025-03-17 13:37:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 826 states have (on average 1.6537530266343825) internal successors, (1366), 1204 states have internal predecessors, (1366), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2025-03-17 13:37:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1399 transitions. [2025-03-17 13:37:22,849 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1399 transitions. Word has length 95 [2025-03-17 13:37:22,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:22,850 INFO L471 AbstractCegarLoop]: Abstraction has 1215 states and 1399 transitions. [2025-03-17 13:37:22,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.2) internal successors, (93), 16 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:37:22,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1399 transitions. [2025-03-17 13:37:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-17 13:37:22,850 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:22,850 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:22,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-17 13:37:22,851 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr514REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:37:22,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1732061927, now seen corresponding path program 1 times [2025-03-17 13:37:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:37:22,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290427167] [2025-03-17 13:37:22,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:37:22,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-17 13:37:22,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-17 13:37:22,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:22,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:23,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:37:23,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290427167] [2025-03-17 13:37:23,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290427167] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:37:23,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:37:23,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 13:37:23,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853814869] [2025-03-17 13:37:23,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:37:23,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 13:37:23,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:37:23,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 13:37:23,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2025-03-17 13:37:23,513 INFO L87 Difference]: Start difference. First operand 1215 states and 1399 transitions. Second operand has 18 states, 16 states have (on average 5.8125) internal successors, (93), 17 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:37:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:26,838 INFO L93 Difference]: Finished difference Result 1218 states and 1406 transitions. [2025-03-17 13:37:26,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 13:37:26,838 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.8125) internal successors, (93), 17 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2025-03-17 13:37:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:26,840 INFO L225 Difference]: With dead ends: 1218 [2025-03-17 13:37:26,840 INFO L226 Difference]: Without dead ends: 1218 [2025-03-17 13:37:26,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2025-03-17 13:37:26,841 INFO L435 NwaCegarLoop]: 732 mSDtfsCounter, 1169 mSDsluCounter, 6724 mSDsCounter, 0 mSdLazyCounter, 8867 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 7456 SdHoareTripleChecker+Invalid, 8902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 8867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:26,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 7456 Invalid, 8902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 8867 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-17 13:37:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2025-03-17 13:37:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1215. [2025-03-17 13:37:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 826 states have (on average 1.652542372881356) internal successors, (1365), 1204 states have internal predecessors, (1365), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2025-03-17 13:37:26,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1398 transitions. [2025-03-17 13:37:26,848 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1398 transitions. Word has length 95 [2025-03-17 13:37:26,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:26,848 INFO L471 AbstractCegarLoop]: Abstraction has 1215 states and 1398 transitions. [2025-03-17 13:37:26,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.8125) internal successors, (93), 17 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:37:26,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1398 transitions. [2025-03-17 13:37:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-17 13:37:26,849 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:26,849 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:26,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-17 13:37:26,849 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr513REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:37:26,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:26,850 INFO L85 PathProgramCache]: Analyzing trace with hash -2004718964, now seen corresponding path program 1 times [2025-03-17 13:37:26,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:37:26,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233766703] [2025-03-17 13:37:26,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:26,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:37:26,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-17 13:37:26,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-17 13:37:26,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:26,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:27,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:27,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:37:27,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233766703] [2025-03-17 13:37:27,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233766703] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:37:27,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748966400] [2025-03-17 13:37:27,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:27,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:27,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:27,333 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:37:27,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 13:37:27,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-17 13:37:27,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-17 13:37:27,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:27,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:27,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-17 13:37:27,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:27,553 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 [2025-03-17 13:37:27,617 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 13:37:27,618 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 [2025-03-17 13:37:27,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:37:27,667 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:27,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-17 13:37:27,693 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:27,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-17 13:37:27,720 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:27,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-17 13:37:27,750 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:27,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-17 13:37:27,782 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:27,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-17 13:37:27,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-17 13:37:27,799 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-03-17 13:37:27,799 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 [2025-03-17 13:37:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:27,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:37:32,263 INFO L349 Elim1Store]: treesize reduction 10, result has 97.5 percent of original size [2025-03-17 13:37:32,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 597 treesize of output 794 [2025-03-17 13:37:32,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748966400] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:37:32,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:37:32,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 22 [2025-03-17 13:37:32,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313241371] [2025-03-17 13:37:32,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:37:32,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 13:37:32,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:37:32,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 13:37:32,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=924, Unknown=51, NotChecked=0, Total=1122 [2025-03-17 13:37:32,337 INFO L87 Difference]: Start difference. First operand 1215 states and 1398 transitions. Second operand has 23 states, 21 states have (on average 6.904761904761905) internal successors, (145), 23 states have internal predecessors, (145), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:37:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:34,935 INFO L93 Difference]: Finished difference Result 1217 states and 1405 transitions. [2025-03-17 13:37:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 13:37:34,936 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 6.904761904761905) internal successors, (145), 23 states have internal predecessors, (145), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 96 [2025-03-17 13:37:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:34,937 INFO L225 Difference]: With dead ends: 1217 [2025-03-17 13:37:34,938 INFO L226 Difference]: Without dead ends: 1217 [2025-03-17 13:37:34,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=269, Invalid=1572, Unknown=51, NotChecked=0, Total=1892 [2025-03-17 13:37:34,938 INFO L435 NwaCegarLoop]: 731 mSDtfsCounter, 1158 mSDsluCounter, 7643 mSDsCounter, 0 mSdLazyCounter, 6695 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 8374 SdHoareTripleChecker+Invalid, 6742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 6695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:34,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 8374 Invalid, 6742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 6695 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-17 13:37:34,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2025-03-17 13:37:34,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1214. [2025-03-17 13:37:34,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 826 states have (on average 1.6513317191283292) internal successors, (1364), 1203 states have internal predecessors, (1364), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2025-03-17 13:37:34,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1397 transitions. [2025-03-17 13:37:34,950 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1397 transitions. Word has length 96 [2025-03-17 13:37:34,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:34,950 INFO L471 AbstractCegarLoop]: Abstraction has 1214 states and 1397 transitions. [2025-03-17 13:37:34,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 6.904761904761905) internal successors, (145), 23 states have internal predecessors, (145), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:37:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1397 transitions. [2025-03-17 13:37:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-17 13:37:34,951 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:34,951 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:34,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 13:37:35,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:35,152 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr514REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:37:35,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2004718963, now seen corresponding path program 1 times [2025-03-17 13:37:35,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:37:35,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557033819] [2025-03-17 13:37:35,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:35,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:37:35,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-17 13:37:35,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-17 13:37:35,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:35,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:35,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:37:35,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557033819] [2025-03-17 13:37:35,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557033819] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:37:35,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743521117] [2025-03-17 13:37:35,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:35,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:35,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:35,862 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:37:35,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 13:37:36,021 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-17 13:37:36,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-17 13:37:36,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:36,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:36,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-03-17 13:37:36,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:36,066 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 [2025-03-17 13:37:36,137 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 [2025-03-17 13:37:36,143 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 13:37:36,143 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 [2025-03-17 13:37:36,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:37:36,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-17 13:37:36,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-17 13:37:36,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2025-03-17 13:37:36,334 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:36,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-03-17 13:37:36,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:37:36,425 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:36,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-03-17 13:37:36,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:37:36,488 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:36,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-03-17 13:37:36,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:37:36,569 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:36,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-03-17 13:37:36,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:37:36,649 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:37:36,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-03-17 13:37:36,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:37:36,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 18 [2025-03-17 13:37:36,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2025-03-17 13:37:36,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:37:36,713 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2025-03-17 13:37:36,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 21 [2025-03-17 13:37:36,721 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 13:37:36,721 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 [2025-03-17 13:37:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:36,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:37:37,009 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0))) (forall ((v_ArrVal_2456 (Array Int Int)) (v_ArrVal_2455 (Array Int Int)) (v_ArrVal_2454 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2455) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2454) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2456) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 1)))) (forall ((v_ArrVal_2457 (Array Int Int)) (v_ArrVal_2456 (Array Int Int)) (v_ArrVal_2455 (Array Int Int)) (v_ArrVal_2454 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int)) (or (forall ((v_ArrVal_2458 Int)) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2454))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2455) .cse1 v_ArrVal_2456) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc57#1.base_7| v_ArrVal_2458) (select (select (store .cse2 .cse1 v_ArrVal_2457) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)))))) is different from false [2025-03-17 13:37:37,262 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0))) (forall ((v_ArrVal_2456 (Array Int Int)) (v_ArrVal_2455 (Array Int Int)) (v_ArrVal_2454 (Array Int Int)) (v_ArrVal_2453 (Array Int Int)) (v_ArrVal_2452 (Array Int Int))) (< 0 (+ (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2453))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2452) .cse1 v_ArrVal_2455) (select (select (store .cse2 .cse1 v_ArrVal_2454) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2456))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1)))) (forall ((v_ArrVal_2457 (Array Int Int)) (v_ArrVal_2456 (Array Int Int)) (v_ArrVal_2455 (Array Int Int)) (v_ArrVal_2454 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int) (v_ArrVal_2453 (Array Int Int)) (v_ArrVal_2452 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)) (forall ((v_ArrVal_2458 Int)) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2453))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_2454))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2452) .cse4 v_ArrVal_2455) .cse5 v_ArrVal_2456) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc57#1.base_7| v_ArrVal_2458) (select (select (store .cse6 .cse5 v_ArrVal_2457) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))))))))) is different from false [2025-03-17 13:37:37,297 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (or (forall ((v_ArrVal_2456 (Array Int Int)) (v_ArrVal_2455 (Array Int Int)) (v_ArrVal_2454 (Array Int Int)) (v_ArrVal_2453 (Array Int Int)) (v_ArrVal_2452 (Array Int Int)) (v_ArrVal_2451 (Array Int Int)) (v_ArrVal_2450 (Array Int Int))) (< 0 (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2450))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_2453))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2451) .cse0 v_ArrVal_2452) .cse1 v_ArrVal_2455) (select (select (store .cse2 .cse1 v_ArrVal_2454) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2456))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)))) (forall ((v_ArrVal_2457 (Array Int Int)) (v_ArrVal_2456 (Array Int Int)) (v_ArrVal_2455 (Array Int Int)) (v_ArrVal_2454 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int) (v_ArrVal_2453 (Array Int Int)) (v_ArrVal_2452 (Array Int Int)) (v_ArrVal_2451 (Array Int Int)) (v_ArrVal_2450 (Array Int Int))) (or (forall ((v_ArrVal_2458 Int)) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2450))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_2453))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_2454))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2451) .cse5 v_ArrVal_2452) .cse6 v_ArrVal_2455) .cse7 v_ArrVal_2456) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc57#1.base_7| v_ArrVal_2458) (select (select (store .cse8 .cse7 v_ArrVal_2457) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)))))) is different from false [2025-03-17 13:37:37,319 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (or (forall ((v_ArrVal_2456 (Array Int Int)) (v_ArrVal_2455 (Array Int Int)) (v_ArrVal_2454 (Array Int Int)) (v_ArrVal_2453 (Array Int Int)) (v_ArrVal_2452 (Array Int Int)) (v_ArrVal_2451 (Array Int Int)) (v_ArrVal_2450 (Array Int Int))) (< 0 (+ (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2450))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_2453))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2451) .cse1 v_ArrVal_2452) .cse2 v_ArrVal_2455) (select (select (store .cse3 .cse2 v_ArrVal_2454) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_2456))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)))) (forall ((v_ArrVal_2457 (Array Int Int)) (v_ArrVal_2456 (Array Int Int)) (v_ArrVal_2455 (Array Int Int)) (v_ArrVal_2454 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int) (v_ArrVal_2453 (Array Int Int)) (v_ArrVal_2452 (Array Int Int)) (v_ArrVal_2451 (Array Int Int)) (v_ArrVal_2450 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)) (forall ((v_ArrVal_2458 Int)) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2450))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_2453))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_2454))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2451) .cse6 v_ArrVal_2452) .cse7 v_ArrVal_2455) .cse8 v_ArrVal_2456) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc57#1.base_7| v_ArrVal_2458) (select (select (store .cse9 .cse8 v_ArrVal_2457) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))))))) is different from false [2025-03-17 13:37:37,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 13:37:37,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 604 treesize of output 622 [2025-03-17 13:37:37,602 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2456 (Array Int Int)) (v_ArrVal_2455 (Array Int Int)) (v_ArrVal_2454 (Array Int Int)) (v_ArrVal_2464 (Array Int Int)) (v_ArrVal_2453 (Array Int Int)) (v_ArrVal_2463 (Array Int Int)) (v_ArrVal_2452 (Array Int Int)) (v_ArrVal_2451 (Array Int Int)) (v_ArrVal_2450 (Array Int Int))) (< 0 (+ (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_2464))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_2450))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_2453))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_2463) .cse0 v_ArrVal_2451) .cse1 v_ArrVal_2452) .cse2 v_ArrVal_2455) (select (select (store .cse3 .cse2 v_ArrVal_2454) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_2456))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1))) (forall ((v_prenex_19 (Array Int Int)) (v_prenex_20 (Array Int Int)) (v_ArrVal_2457 (Array Int Int)) (v_prenex_25 (Array Int Int)) (v_prenex_24 (Array Int Int)) (v_prenex_23 (Array Int Int)) (v_prenex_21 Int) (v_ArrVal_2458 Int) (v_prenex_22 (Array Int Int)) (v_prenex_18 (Array Int Int)) (v_prenex_27 (Array Int Int)) (v_prenex_26 (Array Int Int))) (or (= |c_ULTIMATE.start_main_#t~mem50#1.base| v_prenex_21) (let ((.cse14 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_prenex_22))) (let ((.cse7 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse13 (store .cse14 .cse7 v_prenex_27))) (let ((.cse8 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse12 (store .cse13 .cse8 v_prenex_23))) (let ((.cse9 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse11 (store .cse12 .cse9 v_prenex_20))) (let ((.cse10 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (< (+ (select (select (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_prenex_24) .cse7 v_prenex_26) .cse8 v_prenex_25) .cse9 v_prenex_19) .cse10 v_prenex_18) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 3) (select (store |c_#length| v_prenex_21 v_ArrVal_2458) (select (select (store .cse11 .cse10 v_ArrVal_2457) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))))))) is different from false [2025-03-17 13:37:37,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743521117] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:37:37,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:37:37,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 31 [2025-03-17 13:37:37,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595115170] [2025-03-17 13:37:37,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:37:37,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-17 13:37:37,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:37:37,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-17 13:37:37,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1303, Unknown=24, NotChecked=390, Total=1892 [2025-03-17 13:37:37,607 INFO L87 Difference]: Start difference. First operand 1214 states and 1397 transitions. Second operand has 32 states, 29 states have (on average 5.379310344827586) internal successors, (156), 30 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)