./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.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_OAT_test10-1.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 ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:46:33,132 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:46:33,174 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:46:33,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:46:33,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:46:33,196 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:46:33,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:46:33,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:46:33,197 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:46:33,197 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:46:33,197 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:46:33,197 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:46:33,197 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:46:33,197 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:46:33,197 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:46:33,197 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:46:33,197 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:46:33,197 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:46:33,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:46:33,199 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:46:33,199 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:46:33,199 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:46:33,199 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:46:33,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:46:33,200 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:46:33,200 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:46:33,200 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:46:33,200 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:46:33,200 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:46:33,200 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:46:33,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:46:33,200 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:46:33,200 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:46:33,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:46:33,201 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:46:33,201 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:46:33,201 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:46:33,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:46:33,201 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:46:33,201 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:46:33,201 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:46:33,201 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:46:33,201 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 -> ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e [2025-03-17 13:46:33,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:46:33,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:46:33,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:46:33,445 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:46:33,445 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:46:33,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2025-03-17 13:46:34,588 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfc7b80d8/a6ab0767d8124cfd98402c901052f156/FLAGd927e98d8 [2025-03-17 13:46:34,899 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:46:34,900 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2025-03-17 13:46:34,916 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfc7b80d8/a6ab0767d8124cfd98402c901052f156/FLAGd927e98d8 [2025-03-17 13:46:34,928 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfc7b80d8/a6ab0767d8124cfd98402c901052f156 [2025-03-17 13:46:34,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:46:34,931 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:46:34,932 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:46:34,932 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:46:34,935 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:46:34,936 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:46:34" (1/1) ... [2025-03-17 13:46:34,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@647171c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:34, skipping insertion in model container [2025-03-17 13:46:34,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:46:34" (1/1) ... [2025-03-17 13:46:34,970 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:46:35,252 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 13:46:35,283 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 13:46:35,287 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 13:46:35,290 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 13:46:35,294 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 13:46:35,319 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 13:46:35,320 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 13:46:35,322 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 13:46:35,325 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 13:46:35,342 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 13:46:35,343 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 13:46:35,344 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 13:46:35,344 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 13:46:35,354 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 13:46:35,355 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 13:46:35,356 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 13:46:35,359 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 13:46:35,369 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 13:46:35,370 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 13:46:35,371 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 13:46:35,371 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 13:46:35,378 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 13:46:35,378 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 13:46:35,379 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 13:46:35,379 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 13:46:35,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:46:35,409 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:46:35,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:46:35,561 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:46:35,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:35 WrapperNode [2025-03-17 13:46:35,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:46:35,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:46:35,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:46:35,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:46:35,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:35" (1/1) ... [2025-03-17 13:46:35,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:35" (1/1) ... [2025-03-17 13:46:35,675 INFO L138 Inliner]: procedures = 177, calls = 507, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3338 [2025-03-17 13:46:35,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:46:35,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:46:35,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:46:35,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:46:35,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:35" (1/1) ... [2025-03-17 13:46:35,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:35" (1/1) ... [2025-03-17 13:46:35,702 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:35" (1/1) ... [2025-03-17 13:46:35,798 INFO L175 MemorySlicer]: Split 480 memory accesses to 3 slices as follows [2, 106, 372]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 86 writes are split as follows [0, 4, 82]. [2025-03-17 13:46:35,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:35" (1/1) ... [2025-03-17 13:46:35,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:35" (1/1) ... [2025-03-17 13:46:35,866 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:35" (1/1) ... [2025-03-17 13:46:35,871 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:35" (1/1) ... [2025-03-17 13:46:35,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:35" (1/1) ... [2025-03-17 13:46:35,886 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:35" (1/1) ... [2025-03-17 13:46:35,898 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:46:35,899 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:46:35,900 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:46:35,900 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:46:35,900 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:35" (1/1) ... [2025-03-17 13:46:35,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:46:35,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:46:35,956 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 13:46:35,962 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 13:46:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2025-03-17 13:46:35,977 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2025-03-17 13:46:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 13:46:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 13:46:35,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 13:46:35,978 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 13:46:35,978 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 13:46:35,978 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 13:46:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:46:35,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:46:36,196 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:46:36,198 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:46:38,996 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-17 13:46:39,234 INFO L? ?]: Removed 2487 outVars from TransFormulas that were not future-live. [2025-03-17 13:46:39,234 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:46:39,339 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:46:39,339 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-17 13:46:39,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:46:39 BoogieIcfgContainer [2025-03-17 13:46:39,340 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:46:39,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:46:39,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:46:39,344 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:46:39,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:46:34" (1/3) ... [2025-03-17 13:46:39,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f2c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:46:39, skipping insertion in model container [2025-03-17 13:46:39,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:46:35" (2/3) ... [2025-03-17 13:46:39,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f2c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:46:39, skipping insertion in model container [2025-03-17 13:46:39,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:46:39" (3/3) ... [2025-03-17 13:46:39,346 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-1.i [2025-03-17 13:46:39,356 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:46:39,357 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test10-1.i that has 6 procedures, 2645 locations, 1 initial locations, 78 loop locations, and 986 error locations. [2025-03-17 13:46:39,421 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:46:39,429 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;@3115703f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:46:39,430 INFO L334 AbstractCegarLoop]: Starting to check reachability of 986 error locations. [2025-03-17 13:46:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 2635 states, 1637 states have (on average 1.979230299328039) internal successors, (3240), 2621 states have internal predecessors, (3240), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-17 13:46:39,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:46:39,442 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:39,442 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:46:39,442 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr983REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:39,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:39,447 INFO L85 PathProgramCache]: Analyzing trace with hash 109343, now seen corresponding path program 1 times [2025-03-17 13:46:39,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:39,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388042733] [2025-03-17 13:46:39,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:39,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:39,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:46:39,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:46:39,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:39,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:39,607 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 13:46:39,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:39,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388042733] [2025-03-17 13:46:39,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388042733] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:39,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:39,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:46:39,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499884313] [2025-03-17 13:46:39,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:39,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:46:39,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:39,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:46:39,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:46:39,636 INFO L87 Difference]: Start difference. First operand has 2635 states, 1637 states have (on average 1.979230299328039) internal successors, (3240), 2621 states have internal predecessors, (3240), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 13:46:41,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:41,097 INFO L93 Difference]: Finished difference Result 3218 states and 3789 transitions. [2025-03-17 13:46:41,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:46:41,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2025-03-17 13:46:41,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:41,119 INFO L225 Difference]: With dead ends: 3218 [2025-03-17 13:46:41,119 INFO L226 Difference]: Without dead ends: 3216 [2025-03-17 13:46:41,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 13:46:41,122 INFO L435 NwaCegarLoop]: 2062 mSDtfsCounter, 2855 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2865 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:41,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2865 Valid, 2574 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:46:41,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2025-03-17 13:46:41,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 2870. [2025-03-17 13:46:41,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 1900 states have (on average 1.8747368421052633) internal successors, (3562), 2854 states have internal predecessors, (3562), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-17 13:46:41,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3594 transitions. [2025-03-17 13:46:41,235 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3594 transitions. Word has length 2 [2025-03-17 13:46:41,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:41,235 INFO L471 AbstractCegarLoop]: Abstraction has 2870 states and 3594 transitions. [2025-03-17 13:46:41,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 13:46:41,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3594 transitions. [2025-03-17 13:46:41,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:46:41,236 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:41,236 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:46:41,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 13:46:41,237 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr984REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:41,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:41,237 INFO L85 PathProgramCache]: Analyzing trace with hash 109344, now seen corresponding path program 1 times [2025-03-17 13:46:41,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:41,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111974260] [2025-03-17 13:46:41,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:41,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:41,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:46:41,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:46:41,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:41,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:41,312 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 13:46:41,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:41,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111974260] [2025-03-17 13:46:41,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111974260] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:41,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:41,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:46:41,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133077155] [2025-03-17 13:46:41,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:41,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:46:41,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:41,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:46:41,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:46:41,314 INFO L87 Difference]: Start difference. First operand 2870 states and 3594 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 13:46:42,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:42,788 INFO L93 Difference]: Finished difference Result 4035 states and 5063 transitions. [2025-03-17 13:46:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:46:42,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2025-03-17 13:46:42,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:42,802 INFO L225 Difference]: With dead ends: 4035 [2025-03-17 13:46:42,802 INFO L226 Difference]: Without dead ends: 4035 [2025-03-17 13:46:42,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 13:46:42,804 INFO L435 NwaCegarLoop]: 2612 mSDtfsCounter, 1463 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 4590 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:42,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 4590 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:46:42,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2025-03-17 13:46:42,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 3707. [2025-03-17 13:46:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3707 states, 2735 states have (on average 1.8372943327239488) internal successors, (5025), 3688 states have internal predecessors, (5025), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-17 13:46:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3707 states to 3707 states and 5063 transitions. [2025-03-17 13:46:42,905 INFO L78 Accepts]: Start accepts. Automaton has 3707 states and 5063 transitions. Word has length 2 [2025-03-17 13:46:42,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:42,905 INFO L471 AbstractCegarLoop]: Abstraction has 3707 states and 5063 transitions. [2025-03-17 13:46:42,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 13:46:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3707 states and 5063 transitions. [2025-03-17 13:46:42,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-17 13:46:42,906 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:42,906 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 13:46:42,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 13:46:42,906 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr980REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:42,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:42,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1995533125, now seen corresponding path program 1 times [2025-03-17 13:46:42,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:42,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344694232] [2025-03-17 13:46:42,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:42,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:42,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 13:46:42,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 13:46:42,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:42,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:43,112 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 13:46:43,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:43,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344694232] [2025-03-17 13:46:43,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344694232] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:43,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:43,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:46:43,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900279188] [2025-03-17 13:46:43,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:43,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:46:43,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:43,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:46:43,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:46:43,113 INFO L87 Difference]: Start difference. First operand 3707 states and 5063 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:46,445 INFO L93 Difference]: Finished difference Result 6951 states and 8531 transitions. [2025-03-17 13:46:46,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:46:46,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-17 13:46:46,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:46,463 INFO L225 Difference]: With dead ends: 6951 [2025-03-17 13:46:46,463 INFO L226 Difference]: Without dead ends: 6951 [2025-03-17 13:46:46,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:46:46,464 INFO L435 NwaCegarLoop]: 2422 mSDtfsCounter, 7752 mSDsluCounter, 3928 mSDsCounter, 0 mSdLazyCounter, 4954 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7755 SdHoareTripleChecker+Valid, 6350 SdHoareTripleChecker+Invalid, 5004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:46,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7755 Valid, 6350 Invalid, 5004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4954 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-03-17 13:46:46,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6951 states. [2025-03-17 13:46:46,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6951 to 4714. [2025-03-17 13:46:46,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4714 states, 3742 states have (on average 1.869588455371459) internal successors, (6996), 4689 states have internal predecessors, (6996), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:46:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4714 states to 4714 states and 7046 transitions. [2025-03-17 13:46:46,535 INFO L78 Accepts]: Start accepts. Automaton has 4714 states and 7046 transitions. Word has length 6 [2025-03-17 13:46:46,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:46,535 INFO L471 AbstractCegarLoop]: Abstraction has 4714 states and 7046 transitions. [2025-03-17 13:46:46,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:46,536 INFO L276 IsEmpty]: Start isEmpty. Operand 4714 states and 7046 transitions. [2025-03-17 13:46:46,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:46:46,536 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:46,537 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:46:46,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 13:46:46,537 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr977REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:46,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:46,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1731981424, now seen corresponding path program 1 times [2025-03-17 13:46:46,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:46,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265086459] [2025-03-17 13:46:46,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:46,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:46,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:46:46,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:46:46,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:46,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:46,601 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 13:46:46,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:46,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265086459] [2025-03-17 13:46:46,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265086459] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:46,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:46,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:46:46,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604633266] [2025-03-17 13:46:46,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:46,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:46:46,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:46,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:46:46,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:46:46,602 INFO L87 Difference]: Start difference. First operand 4714 states and 7046 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 13:46:47,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:47,718 INFO L93 Difference]: Finished difference Result 5790 states and 8304 transitions. [2025-03-17 13:46:47,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:46:47,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2025-03-17 13:46:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:47,732 INFO L225 Difference]: With dead ends: 5790 [2025-03-17 13:46:47,733 INFO L226 Difference]: Without dead ends: 5790 [2025-03-17 13:46:47,733 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 13:46:47,733 INFO L435 NwaCegarLoop]: 3309 mSDtfsCounter, 2826 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 4394 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:47,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2836 Valid, 4394 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 13:46:47,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2025-03-17 13:46:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 4622. [2025-03-17 13:46:47,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4622 states, 3742 states have (on average 1.8121325494388028) internal successors, (6781), 4597 states have internal predecessors, (6781), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:46:47,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4622 states to 4622 states and 6831 transitions. [2025-03-17 13:46:47,791 INFO L78 Accepts]: Start accepts. Automaton has 4622 states and 6831 transitions. Word has length 7 [2025-03-17 13:46:47,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:47,791 INFO L471 AbstractCegarLoop]: Abstraction has 4622 states and 6831 transitions. [2025-03-17 13:46:47,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 13:46:47,791 INFO L276 IsEmpty]: Start isEmpty. Operand 4622 states and 6831 transitions. [2025-03-17 13:46:47,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:46:47,791 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:47,791 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:46:47,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 13:46:47,791 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr978REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:47,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:47,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1731981423, now seen corresponding path program 1 times [2025-03-17 13:46:47,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:47,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50001724] [2025-03-17 13:46:47,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:47,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:47,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:46:47,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:46:47,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:47,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:47,876 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 13:46:47,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:47,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50001724] [2025-03-17 13:46:47,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50001724] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:47,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:47,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:46:47,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629112049] [2025-03-17 13:46:47,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:47,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:46:47,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:47,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:46:47,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:46:47,878 INFO L87 Difference]: Start difference. First operand 4622 states and 6831 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 13:46:49,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:49,126 INFO L93 Difference]: Finished difference Result 7345 states and 10772 transitions. [2025-03-17 13:46:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:46:49,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2025-03-17 13:46:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:49,143 INFO L225 Difference]: With dead ends: 7345 [2025-03-17 13:46:49,144 INFO L226 Difference]: Without dead ends: 7345 [2025-03-17 13:46:49,144 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 13:46:49,144 INFO L435 NwaCegarLoop]: 3670 mSDtfsCounter, 2307 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 5334 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:49,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2311 Valid, 5334 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 13:46:49,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2025-03-17 13:46:49,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 5154. [2025-03-17 13:46:49,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5154 states, 4284 states have (on average 1.8032212885154062) internal successors, (7725), 5129 states have internal predecessors, (7725), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:46:49,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5154 states to 5154 states and 7775 transitions. [2025-03-17 13:46:49,236 INFO L78 Accepts]: Start accepts. Automaton has 5154 states and 7775 transitions. Word has length 7 [2025-03-17 13:46:49,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:49,237 INFO L471 AbstractCegarLoop]: Abstraction has 5154 states and 7775 transitions. [2025-03-17 13:46:49,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 13:46:49,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5154 states and 7775 transitions. [2025-03-17 13:46:49,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 13:46:49,238 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:49,238 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:46:49,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 13:46:49,238 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr346REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:49,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:49,239 INFO L85 PathProgramCache]: Analyzing trace with hash 373834743, now seen corresponding path program 1 times [2025-03-17 13:46:49,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:49,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71644875] [2025-03-17 13:46:49,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:49,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:49,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 13:46:49,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 13:46:49,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:49,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:49,300 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 13:46:49,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:49,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71644875] [2025-03-17 13:46:49,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71644875] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:49,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:49,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:46:49,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593106172] [2025-03-17 13:46:49,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:49,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:46:49,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:49,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:46:49,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:46:49,301 INFO L87 Difference]: Start difference. First operand 5154 states and 7775 transitions. Second operand has 4 states, 4 states have (on average 2.25) 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 13:46:49,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:49,687 INFO L93 Difference]: Finished difference Result 7141 states and 10539 transitions. [2025-03-17 13:46:49,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:46:49,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) 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 13:46:49,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:49,705 INFO L225 Difference]: With dead ends: 7141 [2025-03-17 13:46:49,705 INFO L226 Difference]: Without dead ends: 7141 [2025-03-17 13:46:49,705 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 13:46:49,707 INFO L435 NwaCegarLoop]: 3073 mSDtfsCounter, 1443 mSDsluCounter, 5786 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 8859 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:49,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 8859 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 13:46:49,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7141 states. [2025-03-17 13:46:49,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7141 to 5156. [2025-03-17 13:46:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5156 states, 4286 states have (on average 1.80284647690154) internal successors, (7727), 5131 states have internal predecessors, (7727), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:46:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 7777 transitions. [2025-03-17 13:46:49,783 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 7777 transitions. Word has length 9 [2025-03-17 13:46:49,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:49,784 INFO L471 AbstractCegarLoop]: Abstraction has 5156 states and 7777 transitions. [2025-03-17 13:46:49,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) 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 13:46:49,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 7777 transitions. [2025-03-17 13:46:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-17 13:46:49,785 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:49,785 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:46:49,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 13:46:49,785 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr967REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:49,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:49,785 INFO L85 PathProgramCache]: Analyzing trace with hash 367249261, now seen corresponding path program 1 times [2025-03-17 13:46:49,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:49,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879442173] [2025-03-17 13:46:49,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:49,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:49,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 13:46:49,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 13:46:49,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:49,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:49,855 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 13:46:49,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:49,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879442173] [2025-03-17 13:46:49,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879442173] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:49,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:49,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:46:49,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498050290] [2025-03-17 13:46:49,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:49,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:46:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:49,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:46:49,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:46:49,857 INFO L87 Difference]: Start difference. First operand 5156 states and 7777 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:50,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:50,970 INFO L93 Difference]: Finished difference Result 5231 states and 7883 transitions. [2025-03-17 13:46:50,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:46:50,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-03-17 13:46:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:50,978 INFO L225 Difference]: With dead ends: 5231 [2025-03-17 13:46:50,978 INFO L226 Difference]: Without dead ends: 5231 [2025-03-17 13:46:50,978 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 13:46:50,979 INFO L435 NwaCegarLoop]: 1890 mSDtfsCounter, 3089 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3099 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:50,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3099 Valid, 3666 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 13:46:50,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5231 states. [2025-03-17 13:46:51,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5231 to 5133. [2025-03-17 13:46:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5133 states, 4286 states have (on average 1.7921138590760617) internal successors, (7681), 5108 states have internal predecessors, (7681), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:46:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5133 states to 5133 states and 7731 transitions. [2025-03-17 13:46:51,045 INFO L78 Accepts]: Start accepts. Automaton has 5133 states and 7731 transitions. Word has length 18 [2025-03-17 13:46:51,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:51,046 INFO L471 AbstractCegarLoop]: Abstraction has 5133 states and 7731 transitions. [2025-03-17 13:46:51,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5133 states and 7731 transitions. [2025-03-17 13:46:51,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-17 13:46:51,047 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:51,047 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:46:51,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 13:46:51,047 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr968REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:51,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:51,048 INFO L85 PathProgramCache]: Analyzing trace with hash 367249262, now seen corresponding path program 1 times [2025-03-17 13:46:51,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:51,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073317861] [2025-03-17 13:46:51,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:51,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:51,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 13:46:51,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 13:46:51,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:51,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:51,129 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 13:46:51,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:51,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073317861] [2025-03-17 13:46:51,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073317861] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:51,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:51,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:46:51,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386905240] [2025-03-17 13:46:51,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:51,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:46:51,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:51,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:46:51,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:46:51,130 INFO L87 Difference]: Start difference. First operand 5133 states and 7731 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:51,316 INFO L93 Difference]: Finished difference Result 4995 states and 7525 transitions. [2025-03-17 13:46:51,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:46:51,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-03-17 13:46:51,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:51,326 INFO L225 Difference]: With dead ends: 4995 [2025-03-17 13:46:51,326 INFO L226 Difference]: Without dead ends: 4995 [2025-03-17 13:46:51,327 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 13:46:51,327 INFO L435 NwaCegarLoop]: 2731 mSDtfsCounter, 60 mSDsluCounter, 2678 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 5409 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:51,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 5409 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 13:46:51,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2025-03-17 13:46:51,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4995. [2025-03-17 13:46:51,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4995 states, 4160 states have (on average 1.796875) internal successors, (7475), 4970 states have internal predecessors, (7475), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:46:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4995 states to 4995 states and 7525 transitions. [2025-03-17 13:46:51,388 INFO L78 Accepts]: Start accepts. Automaton has 4995 states and 7525 transitions. Word has length 18 [2025-03-17 13:46:51,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:51,388 INFO L471 AbstractCegarLoop]: Abstraction has 4995 states and 7525 transitions. [2025-03-17 13:46:51,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:51,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4995 states and 7525 transitions. [2025-03-17 13:46:51,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-17 13:46:51,389 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:51,390 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:46:51,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 13:46:51,390 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr659REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:51,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash 342714414, now seen corresponding path program 1 times [2025-03-17 13:46:51,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:51,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572953076] [2025-03-17 13:46:51,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:51,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:51,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 13:46:51,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 13:46:51,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:51,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:51,485 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 13:46:51,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:51,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572953076] [2025-03-17 13:46:51,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572953076] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:51,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:51,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:46:51,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115863268] [2025-03-17 13:46:51,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:51,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:46:51,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:51,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:46:51,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:46:51,488 INFO L87 Difference]: Start difference. First operand 4995 states and 7525 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:51,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:51,799 INFO L93 Difference]: Finished difference Result 6882 states and 10160 transitions. [2025-03-17 13:46:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:46:51,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-03-17 13:46:51,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:51,810 INFO L225 Difference]: With dead ends: 6882 [2025-03-17 13:46:51,810 INFO L226 Difference]: Without dead ends: 6882 [2025-03-17 13:46:51,810 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 13:46:51,811 INFO L435 NwaCegarLoop]: 3008 mSDtfsCounter, 1306 mSDsluCounter, 5605 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 8613 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:51,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 8613 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 13:46:51,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6882 states. [2025-03-17 13:46:51,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6882 to 5005. [2025-03-17 13:46:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5005 states, 4170 states have (on average 1.7949640287769784) internal successors, (7485), 4980 states have internal predecessors, (7485), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:46:51,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5005 states to 5005 states and 7535 transitions. [2025-03-17 13:46:51,880 INFO L78 Accepts]: Start accepts. Automaton has 5005 states and 7535 transitions. Word has length 18 [2025-03-17 13:46:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:51,880 INFO L471 AbstractCegarLoop]: Abstraction has 5005 states and 7535 transitions. [2025-03-17 13:46:51,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:51,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5005 states and 7535 transitions. [2025-03-17 13:46:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-17 13:46:51,881 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:51,881 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:46:51,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 13:46:51,881 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr944REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:51,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:51,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1500296572, now seen corresponding path program 1 times [2025-03-17 13:46:51,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:51,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022654098] [2025-03-17 13:46:51,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:51,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:51,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 13:46:51,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 13:46:51,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:51,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:51,945 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 13:46:51,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:51,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022654098] [2025-03-17 13:46:51,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022654098] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:51,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:51,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:46:51,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918865092] [2025-03-17 13:46:51,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:51,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:46:51,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:51,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:46:51,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:46:51,946 INFO L87 Difference]: Start difference. First operand 5005 states and 7535 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:52,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:52,168 INFO L93 Difference]: Finished difference Result 4982 states and 7491 transitions. [2025-03-17 13:46:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:46:52,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-03-17 13:46:52,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:52,176 INFO L225 Difference]: With dead ends: 4982 [2025-03-17 13:46:52,176 INFO L226 Difference]: Without dead ends: 4982 [2025-03-17 13:46:52,177 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 13:46:52,177 INFO L435 NwaCegarLoop]: 2693 mSDtfsCounter, 45 mSDsluCounter, 5363 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 8056 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:52,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 8056 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 13:46:52,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4982 states. [2025-03-17 13:46:52,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4982 to 4982. [2025-03-17 13:46:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4982 states, 4154 states have (on average 1.7912855079441503) internal successors, (7441), 4957 states have internal predecessors, (7441), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:46:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4982 states to 4982 states and 7491 transitions. [2025-03-17 13:46:52,226 INFO L78 Accepts]: Start accepts. Automaton has 4982 states and 7491 transitions. Word has length 19 [2025-03-17 13:46:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:52,226 INFO L471 AbstractCegarLoop]: Abstraction has 4982 states and 7491 transitions. [2025-03-17 13:46:52,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:52,226 INFO L276 IsEmpty]: Start isEmpty. Operand 4982 states and 7491 transitions. [2025-03-17 13:46:52,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-17 13:46:52,226 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:52,227 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] [2025-03-17 13:46:52,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 13:46:52,227 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr930REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:52,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:52,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2100953158, now seen corresponding path program 1 times [2025-03-17 13:46:52,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:52,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626382290] [2025-03-17 13:46:52,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:52,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:52,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 13:46:52,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 13:46:52,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:52,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:52,371 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 13:46:52,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:52,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626382290] [2025-03-17 13:46:52,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626382290] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:52,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:52,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:46:52,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635683566] [2025-03-17 13:46:52,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:52,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:46:52,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:52,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:46:52,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:46:52,374 INFO L87 Difference]: Start difference. First operand 4982 states and 7491 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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 13:46:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:53,899 INFO L93 Difference]: Finished difference Result 7267 states and 10632 transitions. [2025-03-17 13:46:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:46:53,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-03-17 13:46:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:53,912 INFO L225 Difference]: With dead ends: 7267 [2025-03-17 13:46:53,912 INFO L226 Difference]: Without dead ends: 7267 [2025-03-17 13:46:53,912 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 13:46:53,912 INFO L435 NwaCegarLoop]: 2162 mSDtfsCounter, 2307 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 5573 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:53,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2311 Valid, 5573 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2702 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 13:46:53,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7267 states. [2025-03-17 13:46:53,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7267 to 4978. [2025-03-17 13:46:53,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4978 states, 4154 states have (on average 1.7893596533461724) internal successors, (7433), 4953 states have internal predecessors, (7433), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:46:53,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4978 states to 4978 states and 7483 transitions. [2025-03-17 13:46:53,965 INFO L78 Accepts]: Start accepts. Automaton has 4978 states and 7483 transitions. Word has length 33 [2025-03-17 13:46:53,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:53,965 INFO L471 AbstractCegarLoop]: Abstraction has 4978 states and 7483 transitions. [2025-03-17 13:46:53,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 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 13:46:53,965 INFO L276 IsEmpty]: Start isEmpty. Operand 4978 states and 7483 transitions. [2025-03-17 13:46:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-17 13:46:53,966 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:53,966 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] [2025-03-17 13:46:53,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 13:46:53,966 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr916REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:53,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:53,967 INFO L85 PathProgramCache]: Analyzing trace with hash -853719889, now seen corresponding path program 1 times [2025-03-17 13:46:53,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:53,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673995968] [2025-03-17 13:46:53,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:53,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:53,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-17 13:46:53,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-17 13:46:53,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:53,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:54,076 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 13:46:54,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:54,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673995968] [2025-03-17 13:46:54,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673995968] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:54,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:54,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:46:54,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829931881] [2025-03-17 13:46:54,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:54,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:46:54,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:54,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:46:54,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:46:54,077 INFO L87 Difference]: Start difference. First operand 4978 states and 7483 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 13:46:54,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:54,297 INFO L93 Difference]: Finished difference Result 4966 states and 7463 transitions. [2025-03-17 13:46:54,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:46:54,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 67 [2025-03-17 13:46:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:54,304 INFO L225 Difference]: With dead ends: 4966 [2025-03-17 13:46:54,304 INFO L226 Difference]: Without dead ends: 4966 [2025-03-17 13:46:54,305 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 13:46:54,305 INFO L435 NwaCegarLoop]: 2691 mSDtfsCounter, 21 mSDsluCounter, 5351 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8042 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:54,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8042 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 13:46:54,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4966 states. [2025-03-17 13:46:54,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4966 to 4966. [2025-03-17 13:46:54,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4966 states, 4142 states have (on average 1.7897151134717528) internal successors, (7413), 4941 states have internal predecessors, (7413), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:46:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 7463 transitions. [2025-03-17 13:46:54,348 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 7463 transitions. Word has length 67 [2025-03-17 13:46:54,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:54,348 INFO L471 AbstractCegarLoop]: Abstraction has 4966 states and 7463 transitions. [2025-03-17 13:46:54,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 13:46:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 7463 transitions. [2025-03-17 13:46:54,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-17 13:46:54,349 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:54,349 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] [2025-03-17 13:46:54,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 13:46:54,350 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr916REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:54,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1116259209, now seen corresponding path program 1 times [2025-03-17 13:46:54,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:54,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654612806] [2025-03-17 13:46:54,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:54,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:54,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-17 13:46:54,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-17 13:46:54,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:54,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:54,435 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 13:46:54,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:54,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654612806] [2025-03-17 13:46:54,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654612806] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:54,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:54,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:46:54,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366779485] [2025-03-17 13:46:54,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:54,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:46:54,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:54,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:46:54,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:46:54,436 INFO L87 Difference]: Start difference. First operand 4966 states and 7463 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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 13:46:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:54,682 INFO L93 Difference]: Finished difference Result 6456 states and 9628 transitions. [2025-03-17 13:46:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:46:54,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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 75 [2025-03-17 13:46:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:54,691 INFO L225 Difference]: With dead ends: 6456 [2025-03-17 13:46:54,691 INFO L226 Difference]: Without dead ends: 6456 [2025-03-17 13:46:54,691 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 13:46:54,691 INFO L435 NwaCegarLoop]: 2706 mSDtfsCounter, 1077 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 5349 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:54,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 5349 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 13:46:54,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2025-03-17 13:46:54,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 5809. [2025-03-17 13:46:54,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5809 states, 4981 states have (on average 1.7709295322224452) internal successors, (8821), 5780 states have internal predecessors, (8821), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-17 13:46:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5809 states to 5809 states and 8879 transitions. [2025-03-17 13:46:54,745 INFO L78 Accepts]: Start accepts. Automaton has 5809 states and 8879 transitions. Word has length 75 [2025-03-17 13:46:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:54,745 INFO L471 AbstractCegarLoop]: Abstraction has 5809 states and 8879 transitions. [2025-03-17 13:46:54,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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 13:46:54,746 INFO L276 IsEmpty]: Start isEmpty. Operand 5809 states and 8879 transitions. [2025-03-17 13:46:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-17 13:46:54,746 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:54,746 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] [2025-03-17 13:46:54,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 13:46:54,747 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr886REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:54,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:54,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1454292132, now seen corresponding path program 1 times [2025-03-17 13:46:54,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:54,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247013737] [2025-03-17 13:46:54,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:54,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:54,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-17 13:46:54,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-17 13:46:54,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:54,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:55,120 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 13:46:55,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:55,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247013737] [2025-03-17 13:46:55,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247013737] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:55,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:55,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 13:46:55,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895588773] [2025-03-17 13:46:55,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:55,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 13:46:55,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:55,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 13:46:55,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:46:55,122 INFO L87 Difference]: Start difference. First operand 5809 states and 8879 transitions. Second operand has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 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 13:46:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:56,880 INFO L93 Difference]: Finished difference Result 5725 states and 8680 transitions. [2025-03-17 13:46:56,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:46:56,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 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 78 [2025-03-17 13:46:56,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:56,887 INFO L225 Difference]: With dead ends: 5725 [2025-03-17 13:46:56,887 INFO L226 Difference]: Without dead ends: 5725 [2025-03-17 13:46:56,887 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 13:46:56,887 INFO L435 NwaCegarLoop]: 1423 mSDtfsCounter, 2625 mSDsluCounter, 2801 mSDsCounter, 0 mSdLazyCounter, 4017 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2635 SdHoareTripleChecker+Valid, 4224 SdHoareTripleChecker+Invalid, 4110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 4017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:56,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2635 Valid, 4224 Invalid, 4110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 4017 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 13:46:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5725 states. [2025-03-17 13:46:56,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5725 to 5183. [2025-03-17 13:46:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 4439 states have (on average 1.7251633250732148) internal successors, (7658), 5154 states have internal predecessors, (7658), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-17 13:46:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 7716 transitions. [2025-03-17 13:46:56,935 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 7716 transitions. Word has length 78 [2025-03-17 13:46:56,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:56,935 INFO L471 AbstractCegarLoop]: Abstraction has 5183 states and 7716 transitions. [2025-03-17 13:46:56,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 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 13:46:56,935 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 7716 transitions. [2025-03-17 13:46:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-17 13:46:56,936 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:56,936 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 13:46:56,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 13:46:56,936 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr879REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:56,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash 860061058, now seen corresponding path program 1 times [2025-03-17 13:46:56,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:56,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102535960] [2025-03-17 13:46:56,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:56,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:56,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 13:46:56,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 13:46:56,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:56,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:57,145 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 13:46:57,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:57,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102535960] [2025-03-17 13:46:57,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102535960] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:57,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:57,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:46:57,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798323388] [2025-03-17 13:46:57,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:57,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:46:57,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:57,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:46:57,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:46:57,147 INFO L87 Difference]: Start difference. First operand 5183 states and 7716 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 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 13:46:58,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:58,311 INFO L93 Difference]: Finished difference Result 5182 states and 7714 transitions. [2025-03-17 13:46:58,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:46:58,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 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 83 [2025-03-17 13:46:58,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:58,318 INFO L225 Difference]: With dead ends: 5182 [2025-03-17 13:46:58,318 INFO L226 Difference]: Without dead ends: 5182 [2025-03-17 13:46:58,318 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 13:46:58,319 INFO L435 NwaCegarLoop]: 2617 mSDtfsCounter, 2 mSDsluCounter, 5369 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7986 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:58,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7986 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2933 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 13:46:58,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5182 states. [2025-03-17 13:46:58,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5182 to 5182. [2025-03-17 13:46:58,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5182 states, 4439 states have (on average 1.7247127731471052) internal successors, (7656), 5153 states have internal predecessors, (7656), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-17 13:46:58,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5182 states to 5182 states and 7714 transitions. [2025-03-17 13:46:58,368 INFO L78 Accepts]: Start accepts. Automaton has 5182 states and 7714 transitions. Word has length 83 [2025-03-17 13:46:58,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:58,368 INFO L471 AbstractCegarLoop]: Abstraction has 5182 states and 7714 transitions. [2025-03-17 13:46:58,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 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 13:46:58,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5182 states and 7714 transitions. [2025-03-17 13:46:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-17 13:46:58,369 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:58,369 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 13:46:58,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 13:46:58,370 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr880REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:46:58,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:58,370 INFO L85 PathProgramCache]: Analyzing trace with hash 860061059, now seen corresponding path program 1 times [2025-03-17 13:46:58,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:46:58,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900553261] [2025-03-17 13:46:58,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:58,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:46:58,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 13:46:58,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 13:46:58,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:58,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:58,699 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 13:46:58,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:46:58,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900553261] [2025-03-17 13:46:58,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900553261] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:58,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:58,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:46:58,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509706322] [2025-03-17 13:46:58,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:58,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:46:58,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:46:58,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:46:58,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:46:58,701 INFO L87 Difference]: Start difference. First operand 5182 states and 7714 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 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 13:47:00,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:47:00,171 INFO L93 Difference]: Finished difference Result 5181 states and 7712 transitions. [2025-03-17 13:47:00,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:47:00,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 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 83 [2025-03-17 13:47:00,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:47:00,175 INFO L225 Difference]: With dead ends: 5181 [2025-03-17 13:47:00,175 INFO L226 Difference]: Without dead ends: 5181 [2025-03-17 13:47:00,175 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 13:47:00,176 INFO L435 NwaCegarLoop]: 2617 mSDtfsCounter, 1 mSDsluCounter, 5343 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 7960 SdHoareTripleChecker+Invalid, 2957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:47:00,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 7960 Invalid, 2957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:47:00,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5181 states. [2025-03-17 13:47:00,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5181 to 5181. [2025-03-17 13:47:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 4437 states have (on average 1.725039441063782) internal successors, (7654), 5152 states have internal predecessors, (7654), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-17 13:47:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 7712 transitions. [2025-03-17 13:47:00,217 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 7712 transitions. Word has length 83 [2025-03-17 13:47:00,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:47:00,218 INFO L471 AbstractCegarLoop]: Abstraction has 5181 states and 7712 transitions. [2025-03-17 13:47:00,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 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 13:47:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 7712 transitions. [2025-03-17 13:47:00,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-17 13:47:00,218 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:47:00,218 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 13:47:00,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 13:47:00,219 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr875REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:47:00,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:47:00,219 INFO L85 PathProgramCache]: Analyzing trace with hash -334810497, now seen corresponding path program 1 times [2025-03-17 13:47:00,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:47:00,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996329204] [2025-03-17 13:47:00,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:00,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:47:00,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-17 13:47:00,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-17 13:47:00,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:00,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:00,382 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 13:47:00,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:47:00,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996329204] [2025-03-17 13:47:00,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996329204] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:47:00,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:47:00,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:47:00,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377285865] [2025-03-17 13:47:00,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:47:00,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:47:00,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:47:00,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:47:00,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:47:00,384 INFO L87 Difference]: Start difference. First operand 5181 states and 7712 transitions. Second operand has 7 states, 5 states have (on average 17.8) internal successors, (89), 6 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 13:47:02,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:47:02,017 INFO L93 Difference]: Finished difference Result 5199 states and 7747 transitions. [2025-03-17 13:47:02,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:47:02,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 17.8) internal successors, (89), 6 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 13:47:02,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:47:02,028 INFO L225 Difference]: With dead ends: 5199 [2025-03-17 13:47:02,028 INFO L226 Difference]: Without dead ends: 5199 [2025-03-17 13:47:02,029 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 13:47:02,029 INFO L435 NwaCegarLoop]: 2581 mSDtfsCounter, 27 mSDsluCounter, 8168 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 10749 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:47:02,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 10749 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-17 13:47:02,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5199 states. [2025-03-17 13:47:02,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5199 to 5190. [2025-03-17 13:47:02,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5190 states, 4445 states have (on average 1.7244094488188977) internal successors, (7665), 5159 states have internal predecessors, (7665), 29 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (43), 28 states have call predecessors, (43), 29 states have call successors, (43) [2025-03-17 13:47:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 7737 transitions. [2025-03-17 13:47:02,079 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 7737 transitions. Word has length 91 [2025-03-17 13:47:02,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:47:02,079 INFO L471 AbstractCegarLoop]: Abstraction has 5190 states and 7737 transitions. [2025-03-17 13:47:02,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 17.8) internal successors, (89), 6 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 13:47:02,080 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 7737 transitions. [2025-03-17 13:47:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-17 13:47:02,080 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:47:02,080 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 13:47:02,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 13:47:02,080 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr876REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:47:02,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:47:02,081 INFO L85 PathProgramCache]: Analyzing trace with hash -334810496, now seen corresponding path program 1 times [2025-03-17 13:47:02,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:47:02,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856682207] [2025-03-17 13:47:02,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:02,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:47:02,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-17 13:47:02,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-17 13:47:02,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:02,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:02,410 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 13:47:02,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:47:02,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856682207] [2025-03-17 13:47:02,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856682207] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:47:02,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:47:02,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 13:47:02,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170925826] [2025-03-17 13:47:02,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:47:02,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 13:47:02,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:47:02,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 13:47:02,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:47:02,411 INFO L87 Difference]: Start difference. First operand 5190 states and 7737 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 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 13:47:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:47:03,936 INFO L93 Difference]: Finished difference Result 5190 states and 7735 transitions. [2025-03-17 13:47:03,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:47:03,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 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 13:47:03,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:47:03,942 INFO L225 Difference]: With dead ends: 5190 [2025-03-17 13:47:03,942 INFO L226 Difference]: Without dead ends: 5190 [2025-03-17 13:47:03,942 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 13:47:03,943 INFO L435 NwaCegarLoop]: 2588 mSDtfsCounter, 22 mSDsluCounter, 7580 mSDsCounter, 0 mSdLazyCounter, 3444 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 10168 SdHoareTripleChecker+Invalid, 3453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:47:03,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 10168 Invalid, 3453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3444 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 13:47:03,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2025-03-17 13:47:03,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 5190. [2025-03-17 13:47:04,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5190 states, 4445 states have (on average 1.7239595050618672) internal successors, (7663), 5159 states have internal predecessors, (7663), 29 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (43), 28 states have call predecessors, (43), 29 states have call successors, (43) [2025-03-17 13:47:04,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 7735 transitions. [2025-03-17 13:47:04,012 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 7735 transitions. Word has length 91 [2025-03-17 13:47:04,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:47:04,012 INFO L471 AbstractCegarLoop]: Abstraction has 5190 states and 7735 transitions. [2025-03-17 13:47:04,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 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 13:47:04,013 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 7735 transitions. [2025-03-17 13:47:04,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-17 13:47:04,013 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:47:04,013 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 13:47:04,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 13:47:04,014 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr875REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:47:04,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:47:04,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1581155524, now seen corresponding path program 1 times [2025-03-17 13:47:04,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:47:04,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151423195] [2025-03-17 13:47:04,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:04,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:47:04,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-17 13:47:04,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-17 13:47:04,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:04,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:04,362 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 13:47:04,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:47:04,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151423195] [2025-03-17 13:47:04,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151423195] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:47:04,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002687750] [2025-03-17 13:47:04,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:04,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:47:04,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:47:04,365 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 13:47:04,367 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 13:47:04,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-17 13:47:04,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-17 13:47:04,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:04,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:04,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-17 13:47:04,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:47:04,597 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 13:47:04,706 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-03-17 13:47:04,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-03-17 13:47:04,738 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 13:47:04,802 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 13:47:04,962 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:47:04,962 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 13:47:05,011 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 13:47:05,038 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 13:47:05,038 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:47:05,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002687750] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:47:05,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:47:05,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2025-03-17 13:47:05,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986074301] [2025-03-17 13:47:05,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:47:05,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 13:47:05,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:47:05,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 13:47:05,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=317, Unknown=7, NotChecked=0, Total=380 [2025-03-17 13:47:05,092 INFO L87 Difference]: Start difference. First operand 5190 states and 7735 transitions. Second operand has 19 states, 16 states have (on average 9.125) internal successors, (146), 18 states have internal predecessors, (146), 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 13:47:09,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:47:09,758 INFO L93 Difference]: Finished difference Result 5197 states and 7741 transitions. [2025-03-17 13:47:09,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 13:47:09,758 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 9.125) internal successors, (146), 18 states have internal predecessors, (146), 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 13:47:09,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:47:09,764 INFO L225 Difference]: With dead ends: 5197 [2025-03-17 13:47:09,764 INFO L226 Difference]: Without dead ends: 5197 [2025-03-17 13:47:09,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=460, Unknown=9, NotChecked=0, Total=552 [2025-03-17 13:47:09,764 INFO L435 NwaCegarLoop]: 1765 mSDtfsCounter, 2634 mSDsluCounter, 19171 mSDsCounter, 0 mSdLazyCounter, 11804 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2652 SdHoareTripleChecker+Valid, 20936 SdHoareTripleChecker+Invalid, 11829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 11804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:47:09,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2652 Valid, 20936 Invalid, 11829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 11804 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-03-17 13:47:09,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5197 states. [2025-03-17 13:47:09,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5197 to 5194. [2025-03-17 13:47:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5194 states, 4449 states have (on average 1.7230838390649583) internal successors, (7666), 5162 states have internal predecessors, (7666), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2025-03-17 13:47:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 7726 transitions. [2025-03-17 13:47:09,811 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 7726 transitions. Word has length 92 [2025-03-17 13:47:09,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:47:09,811 INFO L471 AbstractCegarLoop]: Abstraction has 5194 states and 7726 transitions. [2025-03-17 13:47:09,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 9.125) internal successors, (146), 18 states have internal predecessors, (146), 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 13:47:09,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 7726 transitions. [2025-03-17 13:47:09,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-17 13:47:09,812 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:47:09,812 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 13:47:09,820 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 13:47:10,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:47:10,017 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr876REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:47:10,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:47:10,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1581155523, now seen corresponding path program 1 times [2025-03-17 13:47:10,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:47:10,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267829954] [2025-03-17 13:47:10,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:10,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:47:10,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-17 13:47:10,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-17 13:47:10,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:10,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:10,515 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 13:47:10,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:47:10,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267829954] [2025-03-17 13:47:10,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267829954] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:47:10,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565645745] [2025-03-17 13:47:10,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:10,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:47:10,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:47:10,517 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 13:47:10,519 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 13:47:10,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-17 13:47:10,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-17 13:47:10,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:10,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:10,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-17 13:47:10,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:47:10,742 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 13:47:10,826 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 13:47:10,833 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 13:47:10,833 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 13:47:10,847 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 13:47:10,850 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 13:47:10,896 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 13:47:10,899 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 13:47:10,983 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:47:10,984 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 13:47:10,990 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 13:47:11,010 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 13:47:11,013 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 13:47:11,016 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 13:47:11,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:47:11,087 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_814 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_814) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 16))) (forall ((v_ArrVal_814 (Array Int Int)) (v_ArrVal_815 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_814) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_815) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-03-17 13:47:11,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565645745] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:47:11,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:47:11,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2025-03-17 13:47:11,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936548208] [2025-03-17 13:47:11,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:47:11,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 13:47:11,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:47:11,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 13:47:11,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=225, Unknown=1, NotChecked=30, Total=306 [2025-03-17 13:47:11,089 INFO L87 Difference]: Start difference. First operand 5194 states and 7726 transitions. Second operand has 15 states, 12 states have (on average 11.666666666666666) internal successors, (140), 15 states have internal predecessors, (140), 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 13:47:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:47:14,156 INFO L93 Difference]: Finished difference Result 5196 states and 7739 transitions. [2025-03-17 13:47:14,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 13:47:14,156 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 11.666666666666666) internal successors, (140), 15 states have internal predecessors, (140), 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 13:47:14,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:47:14,166 INFO L225 Difference]: With dead ends: 5196 [2025-03-17 13:47:14,166 INFO L226 Difference]: Without dead ends: 5196 [2025-03-17 13:47:14,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 89 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 13:47:14,167 INFO L435 NwaCegarLoop]: 1771 mSDtfsCounter, 2635 mSDsluCounter, 9382 mSDsCounter, 0 mSdLazyCounter, 7986 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2653 SdHoareTripleChecker+Valid, 11153 SdHoareTripleChecker+Invalid, 8011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 7986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:47:14,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2653 Valid, 11153 Invalid, 8011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 7986 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-17 13:47:14,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2025-03-17 13:47:14,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 5184. [2025-03-17 13:47:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5184 states, 4441 states have (on average 1.7237108759288449) internal successors, (7655), 5154 states have internal predecessors, (7655), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-17 13:47:14,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 7713 transitions. [2025-03-17 13:47:14,222 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 7713 transitions. Word has length 92 [2025-03-17 13:47:14,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:47:14,223 INFO L471 AbstractCegarLoop]: Abstraction has 5184 states and 7713 transitions. [2025-03-17 13:47:14,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 11.666666666666666) internal successors, (140), 15 states have internal predecessors, (140), 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 13:47:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 7713 transitions. [2025-03-17 13:47:14,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-17 13:47:14,223 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:47:14,223 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] [2025-03-17 13:47:14,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 13:47:14,424 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,SelfDestructingSolverStorable19 [2025-03-17 13:47:14,424 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr871REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:47:14,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:47:14,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1422540459, now seen corresponding path program 1 times [2025-03-17 13:47:14,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:47:14,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759645185] [2025-03-17 13:47:14,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:14,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:47:14,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-17 13:47:14,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-17 13:47:14,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:14,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:14,748 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 13:47:14,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:47:14,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759645185] [2025-03-17 13:47:14,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759645185] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:47:14,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:47:14,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 13:47:14,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689157422] [2025-03-17 13:47:14,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:47:14,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 13:47:14,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:47:14,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 13:47:14,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-17 13:47:14,750 INFO L87 Difference]: Start difference. First operand 5184 states and 7713 transitions. Second operand has 14 states, 12 states have (on average 7.666666666666667) internal successors, (92), 13 states have internal predecessors, (92), 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 13:47:17,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:47:17,022 INFO L93 Difference]: Finished difference Result 5203 states and 7747 transitions. [2025-03-17 13:47:17,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 13:47:17,023 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.666666666666667) internal successors, (92), 13 states have internal predecessors, (92), 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 94 [2025-03-17 13:47:17,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:47:17,028 INFO L225 Difference]: With dead ends: 5203 [2025-03-17 13:47:17,028 INFO L226 Difference]: Without dead ends: 5203 [2025-03-17 13:47:17,028 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 13:47:17,029 INFO L435 NwaCegarLoop]: 1765 mSDtfsCounter, 2672 mSDsluCounter, 10472 mSDsCounter, 0 mSdLazyCounter, 6908 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 12237 SdHoareTripleChecker+Invalid, 6932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 6908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:47:17,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 12237 Invalid, 6932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 6908 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-17 13:47:17,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2025-03-17 13:47:17,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 5199. [2025-03-17 13:47:17,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 4455 states have (on average 1.7221099887766556) internal successors, (7672), 5167 states have internal predecessors, (7672), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2025-03-17 13:47:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 7732 transitions. [2025-03-17 13:47:17,071 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 7732 transitions. Word has length 94 [2025-03-17 13:47:17,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:47:17,071 INFO L471 AbstractCegarLoop]: Abstraction has 5199 states and 7732 transitions. [2025-03-17 13:47:17,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.666666666666667) internal successors, (92), 13 states have internal predecessors, (92), 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 13:47:17,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 7732 transitions. [2025-03-17 13:47:17,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-17 13:47:17,071 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:47:17,072 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] [2025-03-17 13:47:17,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 13:47:17,072 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr872REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:47:17,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:47:17,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1422540458, now seen corresponding path program 1 times [2025-03-17 13:47:17,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:47:17,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211331910] [2025-03-17 13:47:17,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:17,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:47:17,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-17 13:47:17,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-17 13:47:17,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:17,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:17,495 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 13:47:17,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:47:17,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211331910] [2025-03-17 13:47:17,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211331910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:47:17,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:47:17,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 13:47:17,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614449445] [2025-03-17 13:47:17,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:47:17,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 13:47:17,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:47:17,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 13:47:17,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-17 13:47:17,496 INFO L87 Difference]: Start difference. First operand 5199 states and 7732 transitions. Second operand has 11 states, 10 states have (on average 9.2) internal successors, (92), 11 states have internal predecessors, (92), 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 13:47:20,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:47:20,962 INFO L93 Difference]: Finished difference Result 5202 states and 7745 transitions. [2025-03-17 13:47:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 13:47:20,964 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.2) internal successors, (92), 11 states have internal predecessors, (92), 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 94 [2025-03-17 13:47:20,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:47:20,970 INFO L225 Difference]: With dead ends: 5202 [2025-03-17 13:47:20,970 INFO L226 Difference]: Without dead ends: 5202 [2025-03-17 13:47:20,970 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 13:47:20,972 INFO L435 NwaCegarLoop]: 1772 mSDtfsCounter, 2664 mSDsluCounter, 10388 mSDsCounter, 0 mSdLazyCounter, 9660 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2682 SdHoareTripleChecker+Valid, 12160 SdHoareTripleChecker+Invalid, 9682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 9660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:47:20,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2682 Valid, 12160 Invalid, 9682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 9660 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-17 13:47:20,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5202 states. [2025-03-17 13:47:21,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5202 to 5199. [2025-03-17 13:47:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 4455 states have (on average 1.7216610549943883) internal successors, (7670), 5167 states have internal predecessors, (7670), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2025-03-17 13:47:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 7730 transitions. [2025-03-17 13:47:21,036 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 7730 transitions. Word has length 94 [2025-03-17 13:47:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:47:21,036 INFO L471 AbstractCegarLoop]: Abstraction has 5199 states and 7730 transitions. [2025-03-17 13:47:21,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.2) internal successors, (92), 11 states have internal predecessors, (92), 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 13:47:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 7730 transitions. [2025-03-17 13:47:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-17 13:47:21,037 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:47:21,037 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 13:47:21,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-17 13:47:21,037 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr871REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:47:21,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:47:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1294965896, now seen corresponding path program 1 times [2025-03-17 13:47:21,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:47:21,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668527253] [2025-03-17 13:47:21,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:21,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:47:21,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-17 13:47:21,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-17 13:47:21,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:21,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:21,391 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 13:47:21,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:47:21,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668527253] [2025-03-17 13:47:21,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668527253] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:47:21,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485909853] [2025-03-17 13:47:21,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:21,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:47:21,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:47:21,393 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 13:47:21,395 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 13:47:21,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-17 13:47:21,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-17 13:47:21,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:21,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:21,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-17 13:47:21,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:47:21,642 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 13:47:21,737 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-03-17 13:47:21,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-03-17 13:47:21,760 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 13:47:21,824 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 13:47:21,942 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:47:21,943 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 13:47:22,008 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:47:22,009 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 13:47:22,032 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 13:47:22,059 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 13:47:22,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:47:22,097 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1096 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1096) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2025-03-17 13:47:22,115 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1099 (Array Int Int)) (v_ArrVal_1096 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1099))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1096)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-17 13:47:22,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485909853] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:47:22,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:47:22,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2025-03-17 13:47:22,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112431604] [2025-03-17 13:47:22,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:47:22,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-17 13:47:22,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:47:22,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-17 13:47:22,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=419, Unknown=17, NotChecked=86, Total=600 [2025-03-17 13:47:22,117 INFO L87 Difference]: Start difference. First operand 5199 states and 7730 transitions. Second operand has 22 states, 19 states have (on average 8.0) internal successors, (152), 21 states have internal predecessors, (152), 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 13:47:28,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:47:28,111 INFO L93 Difference]: Finished difference Result 5201 states and 7743 transitions. [2025-03-17 13:47:28,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 13:47:28,111 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 8.0) internal successors, (152), 21 states have internal predecessors, (152), 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 95 [2025-03-17 13:47:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:47:28,117 INFO L225 Difference]: With dead ends: 5201 [2025-03-17 13:47:28,117 INFO L226 Difference]: Without dead ends: 5201 [2025-03-17 13:47:28,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=541, Unknown=18, NotChecked=98, Total=756 [2025-03-17 13:47:28,118 INFO L435 NwaCegarLoop]: 1764 mSDtfsCounter, 2629 mSDsluCounter, 27840 mSDsCounter, 0 mSdLazyCounter, 16533 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2647 SdHoareTripleChecker+Valid, 29604 SdHoareTripleChecker+Invalid, 16556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 16533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:47:28,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2647 Valid, 29604 Invalid, 16556 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 16533 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2025-03-17 13:47:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5201 states. [2025-03-17 13:47:28,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5201 to 5198. [2025-03-17 13:47:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5198 states, 4455 states have (on average 1.7212121212121212) internal successors, (7668), 5166 states have internal predecessors, (7668), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2025-03-17 13:47:28,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5198 states to 5198 states and 7728 transitions. [2025-03-17 13:47:28,161 INFO L78 Accepts]: Start accepts. Automaton has 5198 states and 7728 transitions. Word has length 95 [2025-03-17 13:47:28,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:47:28,161 INFO L471 AbstractCegarLoop]: Abstraction has 5198 states and 7728 transitions. [2025-03-17 13:47:28,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 8.0) internal successors, (152), 21 states have internal predecessors, (152), 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 13:47:28,161 INFO L276 IsEmpty]: Start isEmpty. Operand 5198 states and 7728 transitions. [2025-03-17 13:47:28,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-17 13:47:28,162 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:47:28,162 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 13:47:28,170 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 13:47:28,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:47:28,363 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr872REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:47:28,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:47:28,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1294965895, now seen corresponding path program 1 times [2025-03-17 13:47:28,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:47:28,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516297615] [2025-03-17 13:47:28,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:28,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:47:28,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-17 13:47:28,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-17 13:47:28,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:28,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:28,873 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 13:47:28,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:47:28,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516297615] [2025-03-17 13:47:28,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516297615] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:47:28,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033924655] [2025-03-17 13:47:28,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:28,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:47:28,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:47:28,876 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 13:47:28,877 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 13:47:29,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-17 13:47:29,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-17 13:47:29,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:29,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:29,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-17 13:47:29,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:47:29,109 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 13:47:29,198 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 13:47:29,198 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 13:47:29,202 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 13:47:29,209 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 13:47:29,214 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 13:47:29,260 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 13:47:29,264 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 13:47:29,339 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:47:29,340 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 13:47:29,346 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 13:47:29,393 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:47:29,394 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 13:47:29,396 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 13:47:29,412 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 13:47:29,416 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 13:47:29,419 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 13:47:29,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:47:29,463 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1251 (Array Int Int)) (v_ArrVal_1250 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1250 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))))) is different from false [2025-03-17 13:47:29,471 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1251 (Array Int Int)) (v_ArrVal_1250 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_1250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_1251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_1250 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_1250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4)))))) is different from false [2025-03-17 13:47:29,512 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1257 (Array Int Int)) (v_ArrVal_1256 (Array Int Int)) (v_ArrVal_1250 (Array Int Int))) (<= 0 (+ 4 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1256) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1257) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1257 (Array Int Int)) (v_ArrVal_1256 (Array Int Int)) (v_ArrVal_1251 (Array Int Int)) (v_ArrVal_1250 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1257))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ 8 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1256) .cse1 v_ArrVal_1250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2025-03-17 13:47:29,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033924655] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:47:29,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:47:29,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2025-03-17 13:47:29,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372929501] [2025-03-17 13:47:29,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:47:29,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 13:47:29,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:47:29,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 13:47:29,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=286, Unknown=3, NotChecked=108, Total=462 [2025-03-17 13:47:29,514 INFO L87 Difference]: Start difference. First operand 5198 states and 7728 transitions. Second operand has 17 states, 14 states have (on average 10.357142857142858) internal successors, (145), 17 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:47:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:47:33,632 INFO L93 Difference]: Finished difference Result 5200 states and 7741 transitions. [2025-03-17 13:47:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 13:47:33,632 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 10.357142857142858) internal successors, (145), 17 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 95 [2025-03-17 13:47:33,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:47:33,637 INFO L225 Difference]: With dead ends: 5200 [2025-03-17 13:47:33,637 INFO L226 Difference]: Without dead ends: 5200 [2025-03-17 13:47:33,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=459, Unknown=3, NotChecked=138, Total=702 [2025-03-17 13:47:33,637 INFO L435 NwaCegarLoop]: 1770 mSDtfsCounter, 2633 mSDsluCounter, 12464 mSDsCounter, 0 mSdLazyCounter, 10246 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2651 SdHoareTripleChecker+Valid, 14234 SdHoareTripleChecker+Invalid, 10272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 10246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:47:33,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2651 Valid, 14234 Invalid, 10272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 10246 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-03-17 13:47:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5200 states. [2025-03-17 13:47:33,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5200 to 5182. [2025-03-17 13:47:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5182 states, 4441 states have (on average 1.722810177887863) internal successors, (7651), 5152 states have internal predecessors, (7651), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-17 13:47:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5182 states to 5182 states and 7709 transitions. [2025-03-17 13:47:33,678 INFO L78 Accepts]: Start accepts. Automaton has 5182 states and 7709 transitions. Word has length 95 [2025-03-17 13:47:33,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:47:33,678 INFO L471 AbstractCegarLoop]: Abstraction has 5182 states and 7709 transitions. [2025-03-17 13:47:33,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 10.357142857142858) internal successors, (145), 17 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 13:47:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5182 states and 7709 transitions. [2025-03-17 13:47:33,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-17 13:47:33,679 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:47:33,679 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, 1] [2025-03-17 13:47:33,686 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 13:47:33,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:47:33,879 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr867REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:47:33,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:47:33,880 INFO L85 PathProgramCache]: Analyzing trace with hash -457597032, now seen corresponding path program 1 times [2025-03-17 13:47:33,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:47:33,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784975073] [2025-03-17 13:47:33,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:33,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:47:33,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-17 13:47:33,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-17 13:47:33,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:33,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:34,247 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 13:47:34,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:47:34,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784975073] [2025-03-17 13:47:34,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784975073] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:47:34,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:47:34,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 13:47:34,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062654846] [2025-03-17 13:47:34,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:47:34,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 13:47:34,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:47:34,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 13:47:34,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-03-17 13:47:34,249 INFO L87 Difference]: Start difference. First operand 5182 states and 7709 transitions. Second operand has 15 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 14 states have internal predecessors, (95), 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 13:47:37,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:47:37,500 INFO L93 Difference]: Finished difference Result 5207 states and 7749 transitions. [2025-03-17 13:47:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 13:47:37,500 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 14 states have internal predecessors, (95), 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 97 [2025-03-17 13:47:37,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:47:37,505 INFO L225 Difference]: With dead ends: 5207 [2025-03-17 13:47:37,505 INFO L226 Difference]: Without dead ends: 5207 [2025-03-17 13:47:37,505 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 13:47:37,506 INFO L435 NwaCegarLoop]: 1764 mSDtfsCounter, 2652 mSDsluCounter, 15671 mSDsCounter, 0 mSdLazyCounter, 9818 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2670 SdHoareTripleChecker+Valid, 17435 SdHoareTripleChecker+Invalid, 9841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 9818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:47:37,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2670 Valid, 17435 Invalid, 9841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 9818 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-17 13:47:37,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5207 states. [2025-03-17 13:47:37,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5207 to 5203. [2025-03-17 13:47:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 4461 states have (on average 1.7202420981842637) internal successors, (7674), 5171 states have internal predecessors, (7674), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2025-03-17 13:47:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 7734 transitions. [2025-03-17 13:47:37,552 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 7734 transitions. Word has length 97 [2025-03-17 13:47:37,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:47:37,553 INFO L471 AbstractCegarLoop]: Abstraction has 5203 states and 7734 transitions. [2025-03-17 13:47:37,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 14 states have internal predecessors, (95), 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 13:47:37,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 7734 transitions. [2025-03-17 13:47:37,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-17 13:47:37,553 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:47:37,553 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, 1] [2025-03-17 13:47:37,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-17 13:47:37,554 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr868REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:47:37,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:47:37,554 INFO L85 PathProgramCache]: Analyzing trace with hash -457597031, now seen corresponding path program 1 times [2025-03-17 13:47:37,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:47:37,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386599940] [2025-03-17 13:47:37,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:37,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:47:37,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-17 13:47:37,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-17 13:47:37,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:37,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:38,009 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 13:47:38,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:47:38,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386599940] [2025-03-17 13:47:38,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386599940] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:47:38,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:47:38,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 13:47:38,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908799490] [2025-03-17 13:47:38,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:47:38,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 13:47:38,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:47:38,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 13:47:38,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-17 13:47:38,011 INFO L87 Difference]: Start difference. First operand 5203 states and 7734 transitions. Second operand has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 12 states have internal predecessors, (95), 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 13:47:40,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:47:40,746 INFO L93 Difference]: Finished difference Result 5206 states and 7747 transitions. [2025-03-17 13:47:40,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:47:40,746 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 12 states have internal predecessors, (95), 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 97 [2025-03-17 13:47:40,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:47:40,752 INFO L225 Difference]: With dead ends: 5206 [2025-03-17 13:47:40,752 INFO L226 Difference]: Without dead ends: 5206 [2025-03-17 13:47:40,752 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 13:47:40,752 INFO L435 NwaCegarLoop]: 1771 mSDtfsCounter, 2666 mSDsluCounter, 7635 mSDsCounter, 0 mSdLazyCounter, 6971 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 9406 SdHoareTripleChecker+Invalid, 6993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 6971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:47:40,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2684 Valid, 9406 Invalid, 6993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 6971 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-17 13:47:40,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5206 states. [2025-03-17 13:47:40,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5206 to 5203. [2025-03-17 13:47:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 4461 states have (on average 1.719793768213405) internal successors, (7672), 5171 states have internal predecessors, (7672), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2025-03-17 13:47:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 7732 transitions. [2025-03-17 13:47:40,804 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 7732 transitions. Word has length 97 [2025-03-17 13:47:40,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:47:40,805 INFO L471 AbstractCegarLoop]: Abstraction has 5203 states and 7732 transitions. [2025-03-17 13:47:40,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 12 states have internal predecessors, (95), 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 13:47:40,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 7732 transitions. [2025-03-17 13:47:40,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-17 13:47:40,807 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:47:40,807 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:47:40,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-17 13:47:40,807 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr867REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:47:40,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:47:40,807 INFO L85 PathProgramCache]: Analyzing trace with hash -929847659, now seen corresponding path program 1 times [2025-03-17 13:47:40,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:47:40,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161333727] [2025-03-17 13:47:40,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:40,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:47:40,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-17 13:47:40,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-17 13:47:40,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:40,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:41,175 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 13:47:41,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:47:41,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161333727] [2025-03-17 13:47:41,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161333727] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:47:41,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908525412] [2025-03-17 13:47:41,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:41,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:47:41,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:47:41,178 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 13:47:41,180 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 13:47:41,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-17 13:47:41,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-17 13:47:41,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:41,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:41,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-17 13:47:41,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:47:41,402 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 13:47:41,480 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-03-17 13:47:41,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-03-17 13:47:41,507 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 13:47:41,581 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 13:47:41,678 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:47:41,678 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 13:47:41,728 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:47:41,728 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 13:47:41,771 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:47:41,772 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 13:47:41,783 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 13:47:41,803 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 13:47:41,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:47:41,809 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1563 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_1563) |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 13:47:41,813 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1563 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2025-03-17 13:47:41,820 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1563 (Array Int Int)) (v_ArrVal_1562 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1562))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1563)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-17 13:47:41,861 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1566 (Array Int Int)) (v_ArrVal_1563 (Array Int Int)) (v_ArrVal_1562 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1566))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1562)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1563)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-17 13:47:41,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908525412] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:47:41,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:47:41,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2025-03-17 13:47:41,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820931268] [2025-03-17 13:47:41,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:47:41,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 13:47:41,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:47:41,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 13:47:41,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=511, Unknown=6, NotChecked=196, Total=812 [2025-03-17 13:47:41,863 INFO L87 Difference]: Start difference. First operand 5203 states and 7732 transitions. Second operand has 24 states, 21 states have (on average 7.523809523809524) internal successors, (158), 23 states have internal predecessors, (158), 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 13:47:46,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:47:46,998 INFO L93 Difference]: Finished difference Result 5205 states and 7745 transitions. [2025-03-17 13:47:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 13:47:46,999 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.523809523809524) internal successors, (158), 23 states have internal predecessors, (158), 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 98 [2025-03-17 13:47:46,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:47:47,004 INFO L225 Difference]: With dead ends: 5205 [2025-03-17 13:47:47,004 INFO L226 Difference]: Without dead ends: 5205 [2025-03-17 13:47:47,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=645, Unknown=6, NotChecked=220, Total=992 [2025-03-17 13:47:47,005 INFO L435 NwaCegarLoop]: 1763 mSDtfsCounter, 2620 mSDsluCounter, 24356 mSDsCounter, 0 mSdLazyCounter, 14738 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2638 SdHoareTripleChecker+Valid, 26119 SdHoareTripleChecker+Invalid, 14761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 14738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:47:47,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2638 Valid, 26119 Invalid, 14761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 14738 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2025-03-17 13:47:47,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states. [2025-03-17 13:47:47,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5205 to 5202. [2025-03-17 13:47:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5202 states, 4461 states have (on average 1.7193454382425466) internal successors, (7670), 5170 states have internal predecessors, (7670), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2025-03-17 13:47:47,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 7730 transitions. [2025-03-17 13:47:47,047 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 7730 transitions. Word has length 98 [2025-03-17 13:47:47,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:47:47,047 INFO L471 AbstractCegarLoop]: Abstraction has 5202 states and 7730 transitions. [2025-03-17 13:47:47,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.523809523809524) internal successors, (158), 23 states have internal predecessors, (158), 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 13:47:47,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 7730 transitions. [2025-03-17 13:47:47,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-17 13:47:47,048 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:47:47,048 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, 1, 1] [2025-03-17 13:47:47,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 13:47:47,248 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,SelfDestructingSolverStorable26 [2025-03-17 13:47:47,248 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr868REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:47:47,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:47:47,249 INFO L85 PathProgramCache]: Analyzing trace with hash -929847658, now seen corresponding path program 1 times [2025-03-17 13:47:47,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:47:47,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625976520] [2025-03-17 13:47:47,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:47,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:47:47,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-17 13:47:47,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-17 13:47:47,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:47,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:47,761 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 13:47:47,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:47:47,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625976520] [2025-03-17 13:47:47,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625976520] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:47:47,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844920074] [2025-03-17 13:47:47,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:47,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:47:47,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:47:47,763 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 13:47:47,764 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 13:47:47,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-17 13:47:47,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-17 13:47:47,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:47,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:47:47,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-17 13:47:47,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:47:47,982 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 13:47:48,039 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 13:47:48,043 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 13:47:48,044 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 13:47:48,065 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 13:47:48,072 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 13:47:48,122 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 13:47:48,124 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 13:47:48,190 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:47:48,190 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 13:47:48,196 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 13:47:48,249 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:47:48,249 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 13:47:48,255 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 13:47:48,298 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:47:48,298 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 13:47:48,306 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 13:47:48,341 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 13:47:48,345 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 30 treesize of output 12 [2025-03-17 13:47:48,359 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 13:47:48,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:47:48,576 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse4 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1730 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$#2.offset| .cse4 v_ArrVal_1730))) (or (< (+ (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0) (forall ((v_ArrVal_1732 (Array Int Int)) (v_ArrVal_1731 (Array Int Int)) (v_ArrVal_1729 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse4 v_ArrVal_1729))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store .cse0 .cse2 v_ArrVal_1732) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1731) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))) (forall ((v_ArrVal_1730 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$#2.offset| .cse4 v_ArrVal_1730))) (or (< (+ (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0) (forall ((v_ArrVal_1732 (Array Int Int)) (v_ArrVal_1729 (Array Int Int))) (<= 0 (+ (select (select (store .cse5 (select (select (store |c_#memory_$Pointer$#2.base| .cse4 v_ArrVal_1729) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1732) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8))))))))) is different from false [2025-03-17 13:47:48,635 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1730 (Array Int Int)) (v_ArrVal_1738 (Array Int Int)) (v_ArrVal_1737 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1738))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse0 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1737) .cse5 v_ArrVal_1730))) (or (forall ((v_ArrVal_1732 (Array Int Int)) (v_ArrVal_1731 (Array Int Int)) (v_ArrVal_1729 (Array Int Int))) (let ((.cse3 (store .cse4 .cse5 v_ArrVal_1729))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store .cse0 .cse1 v_ArrVal_1732) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 12) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_1731) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (< (+ (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 4) 0)))))) (forall ((v_ArrVal_1730 (Array Int Int)) (v_ArrVal_1738 (Array Int Int)) (v_ArrVal_1737 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1738))) (let ((.cse8 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse6 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1737) .cse8 v_ArrVal_1730))) (or (< (+ (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 4) 0) (forall ((v_ArrVal_1732 (Array Int Int)) (v_ArrVal_1729 (Array Int Int))) (<= 0 (+ (select (select (store .cse6 (select (select (store .cse7 .cse8 v_ArrVal_1729) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1732) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 8)))))))))) is different from false [2025-03-17 13:47:48,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844920074] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:47:48,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:47:48,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2025-03-17 13:47:48,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775661928] [2025-03-17 13:47:48,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:47:48,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 13:47:48,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:47:48,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 13:47:48,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=650, Unknown=12, NotChecked=106, Total=870 [2025-03-17 13:47:48,638 INFO L87 Difference]: Start difference. First operand 5202 states and 7730 transitions. Second operand has 23 states, 20 states have (on average 7.9) internal successors, (158), 23 states have internal predecessors, (158), 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 13:47:55,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:47:55,411 INFO L93 Difference]: Finished difference Result 5204 states and 7743 transitions. [2025-03-17 13:47:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 13:47:55,412 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 7.9) internal successors, (158), 23 states have internal predecessors, (158), 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 98 [2025-03-17 13:47:55,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:47:55,416 INFO L225 Difference]: With dead ends: 5204 [2025-03-17 13:47:55,416 INFO L226 Difference]: Without dead ends: 5204 [2025-03-17 13:47:55,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=951, Unknown=12, NotChecked=130, Total=1260 [2025-03-17 13:47:55,417 INFO L435 NwaCegarLoop]: 1769 mSDtfsCounter, 2635 mSDsluCounter, 20414 mSDsCounter, 0 mSdLazyCounter, 18678 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2653 SdHoareTripleChecker+Valid, 22183 SdHoareTripleChecker+Invalid, 18706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 18678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:47:55,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2653 Valid, 22183 Invalid, 18706 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 18678 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2025-03-17 13:47:55,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5204 states. [2025-03-17 13:47:55,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5204 to 5180. [2025-03-17 13:47:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5180 states, 4441 states have (on average 1.7219094798468813) internal successors, (7647), 5150 states have internal predecessors, (7647), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-17 13:47:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5180 states to 5180 states and 7705 transitions. [2025-03-17 13:47:55,454 INFO L78 Accepts]: Start accepts. Automaton has 5180 states and 7705 transitions. Word has length 98 [2025-03-17 13:47:55,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:47:55,454 INFO L471 AbstractCegarLoop]: Abstraction has 5180 states and 7705 transitions. [2025-03-17 13:47:55,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 7.9) internal successors, (158), 23 states have internal predecessors, (158), 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 13:47:55,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5180 states and 7705 transitions. [2025-03-17 13:47:55,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-17 13:47:55,455 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:47:55,455 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, 1, 1, 1, 1] [2025-03-17 13:47:55,463 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 13:47:55,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-17 13:47:55,656 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr863REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-17 13:47:55,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:47:55,656 INFO L85 PathProgramCache]: Analyzing trace with hash -44082354, now seen corresponding path program 1 times [2025-03-17 13:47:55,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:47:55,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462350237] [2025-03-17 13:47:55,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:47:55,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:47:55,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-17 13:47:55,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-17 13:47:55,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:47:55,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat