./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85fe539c4a9811cd5d49f239f4680cc0b3752a2958e9f287c34e302b923af4f9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:05:53,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:05:53,967 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:05:53,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:05:53,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:05:53,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:05:53,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:05:53,995 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:05:53,995 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:05:53,995 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:05:53,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:05:53,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:05:53,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:05:53,996 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:05:53,997 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:05:53,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:05:53,997 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:05:53,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:05:53,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:05:53,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:05:53,997 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:05:53,997 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:05:53,998 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:05:53,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:05:53,998 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:05:53,998 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:05:53,998 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:05:53,998 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:05:53,998 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:05:53,998 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:05:53,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:05:53,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:05:53,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:05:53,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:05:53,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:05:53,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:05:54,000 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:05:54,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:05:54,000 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:05:54,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:05:54,000 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:05:54,000 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:05:54,000 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85fe539c4a9811cd5d49f239f4680cc0b3752a2958e9f287c34e302b923af4f9 [2025-02-08 08:05:54,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:05:54,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:05:54,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:05:54,240 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:05:54,240 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:05:54,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i [2025-02-08 08:05:55,327 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/08aaf46ff/4c87c427090946b48cd39d840b0e735e/FLAG66d214f9d [2025-02-08 08:05:55,624 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:05:55,625 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i [2025-02-08 08:05:55,647 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/08aaf46ff/4c87c427090946b48cd39d840b0e735e/FLAG66d214f9d [2025-02-08 08:05:55,873 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/08aaf46ff/4c87c427090946b48cd39d840b0e735e [2025-02-08 08:05:55,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:05:55,875 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:05:55,876 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:05:55,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:05:55,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:05:55,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:05:55" (1/1) ... [2025-02-08 08:05:55,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf158bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:55, skipping insertion in model container [2025-02-08 08:05:55,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:05:55" (1/1) ... [2025-02-08 08:05:55,906 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:05:56,193 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,220 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,223 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,227 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,232 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,249 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,250 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,252 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,255 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,272 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,272 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,275 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,275 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,287 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,288 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,289 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,289 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,297 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,298 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,299 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,299 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,307 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,307 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,308 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,308 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:05:56,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:05:56,331 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:05:56,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:05:56,484 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:05:56,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:56 WrapperNode [2025-02-08 08:05:56,485 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:05:56,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:05:56,485 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:05:56,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:05:56,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:56" (1/1) ... [2025-02-08 08:05:56,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:56" (1/1) ... [2025-02-08 08:05:56,601 INFO L138 Inliner]: procedures = 177, calls = 507, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3338 [2025-02-08 08:05:56,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:05:56,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:05:56,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:05:56,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:05:56,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:56" (1/1) ... [2025-02-08 08:05:56,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:56" (1/1) ... [2025-02-08 08:05:56,623 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:56" (1/1) ... [2025-02-08 08:05:56,740 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]. [2025-02-08 08:05:56,741 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:56" (1/1) ... [2025-02-08 08:05:56,741 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:56" (1/1) ... [2025-02-08 08:05:56,788 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:56" (1/1) ... [2025-02-08 08:05:56,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:56" (1/1) ... [2025-02-08 08:05:56,800 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:56" (1/1) ... [2025-02-08 08:05:56,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:56" (1/1) ... [2025-02-08 08:05:56,828 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:05:56,830 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:05:56,830 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:05:56,830 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:05:56,831 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:56" (1/1) ... [2025-02-08 08:05:56,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:05:56,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:05:56,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:05:56,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2025-02-08 08:05:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 08:05:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 08:05:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 08:05:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 08:05:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 08:05:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 08:05:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 08:05:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 08:05:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 08:05:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 08:05:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 08:05:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:05:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 08:05:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 08:05:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:05:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:05:57,092 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:05:57,094 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:05:59,889 INFO L1324 $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; [2025-02-08 08:06:00,134 INFO L? ?]: Removed 2486 outVars from TransFormulas that were not future-live. [2025-02-08 08:06:00,135 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:06:00,223 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:06:00,226 INFO L337 CfgBuilder]: Removed 2 assume(true) statements. [2025-02-08 08:06:00,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:06:00 BoogieIcfgContainer [2025-02-08 08:06:00,227 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:06:00,228 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:06:00,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:06:00,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:06:00,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:05:55" (1/3) ... [2025-02-08 08:06:00,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2299734f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:06:00, skipping insertion in model container [2025-02-08 08:06:00,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:05:56" (2/3) ... [2025-02-08 08:06:00,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2299734f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:06:00, skipping insertion in model container [2025-02-08 08:06:00,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:06:00" (3/3) ... [2025-02-08 08:06:00,235 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test10-1.i [2025-02-08 08:06:00,245 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:06:00,246 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test10-1.i that has 6 procedures, 2680 locations, 1 initial locations, 84 loop locations, and 986 error locations. [2025-02-08 08:06:00,295 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:06:00,305 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;@49ab470e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:06:00,305 INFO L334 AbstractCegarLoop]: Starting to check reachability of 986 error locations. [2025-02-08 08:06:00,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 2670 states, 1671 states have (on average 1.9593058049072412) internal successors, (3274), 2655 states have internal predecessors, (3274), 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) [2025-02-08 08:06:00,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-02-08 08:06:00,315 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:00,316 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-02-08 08:06:00,316 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)] === [2025-02-08 08:06:00,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:00,319 INFO L85 PathProgramCache]: Analyzing trace with hash 110495, now seen corresponding path program 1 times [2025-02-08 08:06:00,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:00,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309516251] [2025-02-08 08:06:00,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:00,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:00,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 08:06:00,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 08:06:00,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:00,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:00,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:00,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309516251] [2025-02-08 08:06:00,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309516251] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:00,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:00,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:06:00,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878265159] [2025-02-08 08:06:00,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:00,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:06:00,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:00,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:06:00,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:06:00,468 INFO L87 Difference]: Start difference. First operand has 2670 states, 1671 states have (on average 1.9593058049072412) internal successors, (3274), 2655 states have internal predecessors, (3274), 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) [2025-02-08 08:06:01,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:01,899 INFO L93 Difference]: Finished difference Result 3260 states and 3830 transitions. [2025-02-08 08:06:01,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:06:01,901 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 [2025-02-08 08:06:01,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:01,925 INFO L225 Difference]: With dead ends: 3260 [2025-02-08 08:06:01,925 INFO L226 Difference]: Without dead ends: 3255 [2025-02-08 08:06:01,927 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 [2025-02-08 08:06:01,931 INFO L435 NwaCegarLoop]: 2096 mSDtfsCounter, 2890 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2900 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:01,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2900 Valid, 2614 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-08 08:06:01,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2025-02-08 08:06:02,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 2907. [2025-02-08 08:06:02,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 1938 states have (on average 1.8570691434468525) internal successors, (3599), 2891 states have internal predecessors, (3599), 16 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 08:06:02,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 3627 transitions. [2025-02-08 08:06:02,060 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 3627 transitions. Word has length 2 [2025-02-08 08:06:02,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:02,060 INFO L471 AbstractCegarLoop]: Abstraction has 2907 states and 3627 transitions. [2025-02-08 08:06:02,060 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) [2025-02-08 08:06:02,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 3627 transitions. [2025-02-08 08:06:02,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-02-08 08:06:02,061 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:02,061 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-02-08 08:06:02,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:06:02,061 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)] === [2025-02-08 08:06:02,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:02,062 INFO L85 PathProgramCache]: Analyzing trace with hash 110496, now seen corresponding path program 1 times [2025-02-08 08:06:02,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:02,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589276871] [2025-02-08 08:06:02,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:02,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:02,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 08:06:02,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 08:06:02,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:02,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:02,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:02,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589276871] [2025-02-08 08:06:02,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589276871] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:02,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:02,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:06:02,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193311502] [2025-02-08 08:06:02,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:02,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:06:02,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:02,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:06:02,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:06:02,151 INFO L87 Difference]: Start difference. First operand 2907 states and 3627 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) [2025-02-08 08:06:03,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:03,577 INFO L93 Difference]: Finished difference Result 4093 states and 5117 transitions. [2025-02-08 08:06:03,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:06:03,578 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 [2025-02-08 08:06:03,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:03,591 INFO L225 Difference]: With dead ends: 4093 [2025-02-08 08:06:03,591 INFO L226 Difference]: Without dead ends: 4093 [2025-02-08 08:06:03,592 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 [2025-02-08 08:06:03,593 INFO L435 NwaCegarLoop]: 2640 mSDtfsCounter, 1484 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 4646 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 [2025-02-08 08:06:03,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 4646 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-08 08:06:03,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2025-02-08 08:06:03,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 3765. [2025-02-08 08:06:03,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 2794 states have (on average 1.8192555476020043) internal successors, (5083), 3746 states have internal predecessors, (5083), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-08 08:06:03,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 5117 transitions. [2025-02-08 08:06:03,664 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 5117 transitions. Word has length 2 [2025-02-08 08:06:03,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:03,664 INFO L471 AbstractCegarLoop]: Abstraction has 3765 states and 5117 transitions. [2025-02-08 08:06:03,664 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) [2025-02-08 08:06:03,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 5117 transitions. [2025-02-08 08:06:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 08:06:03,665 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:03,665 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:06:03,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:06:03,665 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)] === [2025-02-08 08:06:03,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:03,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1220234457, now seen corresponding path program 1 times [2025-02-08 08:06:03,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:03,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326153661] [2025-02-08 08:06:03,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:03,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:03,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 08:06:03,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 08:06:03,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:03,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:03,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:03,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326153661] [2025-02-08 08:06:03,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326153661] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:03,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:03,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:06:03,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348038656] [2025-02-08 08:06:03,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:03,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:06:03,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:03,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:06:03,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:06:03,836 INFO L87 Difference]: Start difference. First operand 3765 states and 5117 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2025-02-08 08:06:06,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:06,874 INFO L93 Difference]: Finished difference Result 7049 states and 8625 transitions. [2025-02-08 08:06:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:06:06,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 [2025-02-08 08:06:06,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:06,893 INFO L225 Difference]: With dead ends: 7049 [2025-02-08 08:06:06,893 INFO L226 Difference]: Without dead ends: 7049 [2025-02-08 08:06:06,893 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 [2025-02-08 08:06:06,894 INFO L435 NwaCegarLoop]: 2471 mSDtfsCounter, 9629 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 4354 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9632 SdHoareTripleChecker+Valid, 5623 SdHoareTripleChecker+Invalid, 4416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 4354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:06,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9632 Valid, 5623 Invalid, 4416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 4354 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-02-08 08:06:06,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7049 states. [2025-02-08 08:06:06,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7049 to 4791. [2025-02-08 08:06:06,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4791 states, 3820 states have (on average 1.8515706806282723) internal successors, (7073), 4766 states have internal predecessors, (7073), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 08:06:06,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4791 states to 4791 states and 7119 transitions. [2025-02-08 08:06:06,979 INFO L78 Accepts]: Start accepts. Automaton has 4791 states and 7119 transitions. Word has length 7 [2025-02-08 08:06:06,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:06,979 INFO L471 AbstractCegarLoop]: Abstraction has 4791 states and 7119 transitions. [2025-02-08 08:06:06,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2025-02-08 08:06:06,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4791 states and 7119 transitions. [2025-02-08 08:06:06,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 08:06:06,979 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:06,979 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:06:06,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:06:06,980 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)] === [2025-02-08 08:06:06,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:06,980 INFO L85 PathProgramCache]: Analyzing trace with hash -827434155, now seen corresponding path program 1 times [2025-02-08 08:06:06,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:06,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924140801] [2025-02-08 08:06:06,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:06,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:06,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:06:06,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:06:06,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:06,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:07,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:07,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924140801] [2025-02-08 08:06:07,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924140801] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:07,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:07,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:06:07,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136203925] [2025-02-08 08:06:07,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:07,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:06:07,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:07,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:06:07,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:06:07,031 INFO L87 Difference]: Start difference. First operand 4791 states and 7119 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:08,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:08,153 INFO L93 Difference]: Finished difference Result 5888 states and 8398 transitions. [2025-02-08 08:06:08,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:06:08,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2025-02-08 08:06:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:08,169 INFO L225 Difference]: With dead ends: 5888 [2025-02-08 08:06:08,169 INFO L226 Difference]: Without dead ends: 5888 [2025-02-08 08:06:08,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:06:08,170 INFO L435 NwaCegarLoop]: 3358 mSDtfsCounter, 2861 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2871 SdHoareTripleChecker+Valid, 4457 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 [2025-02-08 08:06:08,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2871 Valid, 4457 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 08:06:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2025-02-08 08:06:08,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 4699. [2025-02-08 08:06:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4699 states, 3820 states have (on average 1.7952879581151833) internal successors, (6858), 4674 states have internal predecessors, (6858), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 08:06:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4699 states to 4699 states and 6904 transitions. [2025-02-08 08:06:08,241 INFO L78 Accepts]: Start accepts. Automaton has 4699 states and 6904 transitions. Word has length 8 [2025-02-08 08:06:08,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:08,242 INFO L471 AbstractCegarLoop]: Abstraction has 4699 states and 6904 transitions. [2025-02-08 08:06:08,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:08,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4699 states and 6904 transitions. [2025-02-08 08:06:08,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 08:06:08,243 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:08,243 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:06:08,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:06:08,243 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)] === [2025-02-08 08:06:08,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:08,243 INFO L85 PathProgramCache]: Analyzing trace with hash -827434154, now seen corresponding path program 1 times [2025-02-08 08:06:08,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:08,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446865658] [2025-02-08 08:06:08,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:08,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:08,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:06:08,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:06:08,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:08,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:08,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:08,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446865658] [2025-02-08 08:06:08,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446865658] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:08,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:08,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:06:08,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297638101] [2025-02-08 08:06:08,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:08,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:06:08,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:08,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:06:08,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:06:08,309 INFO L87 Difference]: Start difference. First operand 4699 states and 6904 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:09,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:09,496 INFO L93 Difference]: Finished difference Result 7478 states and 10901 transitions. [2025-02-08 08:06:09,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:06:09,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2025-02-08 08:06:09,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:09,511 INFO L225 Difference]: With dead ends: 7478 [2025-02-08 08:06:09,511 INFO L226 Difference]: Without dead ends: 7478 [2025-02-08 08:06:09,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:06:09,512 INFO L435 NwaCegarLoop]: 3712 mSDtfsCounter, 2338 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 5401 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:09,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2342 Valid, 5401 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 08:06:09,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7478 states. [2025-02-08 08:06:09,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7478 to 5245. [2025-02-08 08:06:09,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 4376 states have (on average 1.7861060329067642) internal successors, (7816), 5220 states have internal predecessors, (7816), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 08:06:09,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 7862 transitions. [2025-02-08 08:06:09,576 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 7862 transitions. Word has length 8 [2025-02-08 08:06:09,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:09,577 INFO L471 AbstractCegarLoop]: Abstraction has 5245 states and 7862 transitions. [2025-02-08 08:06:09,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 7862 transitions. [2025-02-08 08:06:09,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 08:06:09,578 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:09,578 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:06:09,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 08:06:09,578 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr345REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-02-08 08:06:09,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:09,578 INFO L85 PathProgramCache]: Analyzing trace with hash -967251340, now seen corresponding path program 1 times [2025-02-08 08:06:09,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:09,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177419969] [2025-02-08 08:06:09,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:09,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:09,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 08:06:09,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 08:06:09,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:09,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:09,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:09,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177419969] [2025-02-08 08:06:09,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177419969] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:09,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:09,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:06:09,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039217980] [2025-02-08 08:06:09,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:09,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:06:09,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:09,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:06:09,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:06:09,652 INFO L87 Difference]: Start difference. First operand 5245 states and 7862 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:09,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:09,981 INFO L93 Difference]: Finished difference Result 7263 states and 10657 transitions. [2025-02-08 08:06:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:06:09,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2025-02-08 08:06:09,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:10,020 INFO L225 Difference]: With dead ends: 7263 [2025-02-08 08:06:10,021 INFO L226 Difference]: Without dead ends: 7263 [2025-02-08 08:06:10,021 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 [2025-02-08 08:06:10,021 INFO L435 NwaCegarLoop]: 3331 mSDtfsCounter, 1457 mSDsluCounter, 6072 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 9403 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:10,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 9403 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 08:06:10,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7263 states. [2025-02-08 08:06:10,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7263 to 5248. [2025-02-08 08:06:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5248 states, 4379 states have (on average 1.7855674811600821) internal successors, (7819), 5223 states have internal predecessors, (7819), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 08:06:10,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5248 states to 5248 states and 7865 transitions. [2025-02-08 08:06:10,069 INFO L78 Accepts]: Start accepts. Automaton has 5248 states and 7865 transitions. Word has length 11 [2025-02-08 08:06:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:10,069 INFO L471 AbstractCegarLoop]: Abstraction has 5248 states and 7865 transitions. [2025-02-08 08:06:10,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:10,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5248 states and 7865 transitions. [2025-02-08 08:06:10,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 08:06:10,070 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:10,070 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] [2025-02-08 08:06:10,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 08:06:10,070 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)] === [2025-02-08 08:06:10,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:10,070 INFO L85 PathProgramCache]: Analyzing trace with hash -64379323, now seen corresponding path program 1 times [2025-02-08 08:06:10,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:10,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784472771] [2025-02-08 08:06:10,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:10,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:10,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 08:06:10,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 08:06:10,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:10,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:10,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:10,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784472771] [2025-02-08 08:06:10,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784472771] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:10,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:10,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:06:10,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105727956] [2025-02-08 08:06:10,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:10,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:06:10,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:10,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:06:10,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:06:10,123 INFO L87 Difference]: Start difference. First operand 5248 states and 7865 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:11,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:11,228 INFO L93 Difference]: Finished difference Result 5323 states and 7971 transitions. [2025-02-08 08:06:11,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:06:11,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2025-02-08 08:06:11,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:11,237 INFO L225 Difference]: With dead ends: 5323 [2025-02-08 08:06:11,237 INFO L226 Difference]: Without dead ends: 5323 [2025-02-08 08:06:11,237 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 [2025-02-08 08:06:11,238 INFO L435 NwaCegarLoop]: 1919 mSDtfsCounter, 3123 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3133 SdHoareTripleChecker+Valid, 3718 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 [2025-02-08 08:06:11,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3133 Valid, 3718 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 08:06:11,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2025-02-08 08:06:11,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 5225. [2025-02-08 08:06:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 4379 states have (on average 1.775062799725965) internal successors, (7773), 5200 states have internal predecessors, (7773), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 08:06:11,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 7819 transitions. [2025-02-08 08:06:11,303 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 7819 transitions. Word has length 20 [2025-02-08 08:06:11,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:11,303 INFO L471 AbstractCegarLoop]: Abstraction has 5225 states and 7819 transitions. [2025-02-08 08:06:11,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:11,303 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 7819 transitions. [2025-02-08 08:06:11,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 08:06:11,304 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:11,304 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] [2025-02-08 08:06:11,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 08:06:11,304 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)] === [2025-02-08 08:06:11,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash -64379322, now seen corresponding path program 1 times [2025-02-08 08:06:11,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:11,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781400008] [2025-02-08 08:06:11,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:11,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:11,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 08:06:11,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 08:06:11,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:11,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:11,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:11,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781400008] [2025-02-08 08:06:11,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781400008] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:11,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:11,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:06:11,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013928929] [2025-02-08 08:06:11,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:11,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:06:11,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:11,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:06:11,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:06:11,371 INFO L87 Difference]: Start difference. First operand 5225 states and 7819 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:11,507 INFO L93 Difference]: Finished difference Result 5087 states and 7613 transitions. [2025-02-08 08:06:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:06:11,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2025-02-08 08:06:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:11,515 INFO L225 Difference]: With dead ends: 5087 [2025-02-08 08:06:11,515 INFO L226 Difference]: Without dead ends: 5087 [2025-02-08 08:06:11,515 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 [2025-02-08 08:06:11,515 INFO L435 NwaCegarLoop]: 2759 mSDtfsCounter, 60 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 5465 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:11,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 5465 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 08:06:11,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5087 states. [2025-02-08 08:06:11,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5087 to 5087. [2025-02-08 08:06:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5087 states, 4253 states have (on average 1.7792146719962378) internal successors, (7567), 5062 states have internal predecessors, (7567), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 08:06:11,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5087 states to 5087 states and 7613 transitions. [2025-02-08 08:06:11,553 INFO L78 Accepts]: Start accepts. Automaton has 5087 states and 7613 transitions. Word has length 20 [2025-02-08 08:06:11,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:11,553 INFO L471 AbstractCegarLoop]: Abstraction has 5087 states and 7613 transitions. [2025-02-08 08:06:11,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:11,554 INFO L276 IsEmpty]: Start isEmpty. Operand 5087 states and 7613 transitions. [2025-02-08 08:06:11,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 08:06:11,554 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:11,554 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] [2025-02-08 08:06:11,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 08:06:11,554 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)] === [2025-02-08 08:06:11,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:11,555 INFO L85 PathProgramCache]: Analyzing trace with hash -831640542, now seen corresponding path program 1 times [2025-02-08 08:06:11,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:11,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052550640] [2025-02-08 08:06:11,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:11,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:11,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 08:06:11,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 08:06:11,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:11,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:11,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:11,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052550640] [2025-02-08 08:06:11,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052550640] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:11,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:11,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:06:11,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193078503] [2025-02-08 08:06:11,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:11,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:06:11,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:11,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:06:11,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:06:11,641 INFO L87 Difference]: Start difference. First operand 5087 states and 7613 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:11,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:11,971 INFO L93 Difference]: Finished difference Result 7004 states and 10278 transitions. [2025-02-08 08:06:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:06:11,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2025-02-08 08:06:11,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:11,983 INFO L225 Difference]: With dead ends: 7004 [2025-02-08 08:06:11,983 INFO L226 Difference]: Without dead ends: 7004 [2025-02-08 08:06:11,983 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 [2025-02-08 08:06:11,983 INFO L435 NwaCegarLoop]: 2818 mSDtfsCounter, 1320 mSDsluCounter, 5443 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 8261 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:11,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1326 Valid, 8261 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 08:06:11,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7004 states. [2025-02-08 08:06:12,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7004 to 5097. [2025-02-08 08:06:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5097 states, 4263 states have (on average 1.7773868167956839) internal successors, (7577), 5072 states have internal predecessors, (7577), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 08:06:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5097 states to 5097 states and 7623 transitions. [2025-02-08 08:06:12,033 INFO L78 Accepts]: Start accepts. Automaton has 5097 states and 7623 transitions. Word has length 20 [2025-02-08 08:06:12,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:12,033 INFO L471 AbstractCegarLoop]: Abstraction has 5097 states and 7623 transitions. [2025-02-08 08:06:12,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:12,033 INFO L276 IsEmpty]: Start isEmpty. Operand 5097 states and 7623 transitions. [2025-02-08 08:06:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-08 08:06:12,034 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:12,034 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] [2025-02-08 08:06:12,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 08:06:12,034 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)] === [2025-02-08 08:06:12,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:12,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1995880754, now seen corresponding path program 1 times [2025-02-08 08:06:12,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:12,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598011498] [2025-02-08 08:06:12,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:12,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:12,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 08:06:12,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 08:06:12,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:12,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:12,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:12,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598011498] [2025-02-08 08:06:12,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598011498] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:12,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:12,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:06:12,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5271413] [2025-02-08 08:06:12,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:12,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:06:12,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:12,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:06:12,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:06:12,091 INFO L87 Difference]: Start difference. First operand 5097 states and 7623 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:12,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:12,305 INFO L93 Difference]: Finished difference Result 5074 states and 7579 transitions. [2025-02-08 08:06:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:06:12,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2025-02-08 08:06:12,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:12,312 INFO L225 Difference]: With dead ends: 5074 [2025-02-08 08:06:12,312 INFO L226 Difference]: Without dead ends: 5074 [2025-02-08 08:06:12,313 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 [2025-02-08 08:06:12,314 INFO L435 NwaCegarLoop]: 2721 mSDtfsCounter, 45 mSDsluCounter, 5419 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 8140 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 [2025-02-08 08:06:12,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 8140 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 08:06:12,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5074 states. [2025-02-08 08:06:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5074 to 5074. [2025-02-08 08:06:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5074 states, 4247 states have (on average 1.7737226277372262) internal successors, (7533), 5049 states have internal predecessors, (7533), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 08:06:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5074 states to 5074 states and 7579 transitions. [2025-02-08 08:06:12,355 INFO L78 Accepts]: Start accepts. Automaton has 5074 states and 7579 transitions. Word has length 21 [2025-02-08 08:06:12,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:12,355 INFO L471 AbstractCegarLoop]: Abstraction has 5074 states and 7579 transitions. [2025-02-08 08:06:12,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5074 states and 7579 transitions. [2025-02-08 08:06:12,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-08 08:06:12,356 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:12,357 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] [2025-02-08 08:06:12,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 08:06:12,357 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)] === [2025-02-08 08:06:12,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:12,357 INFO L85 PathProgramCache]: Analyzing trace with hash 345669700, now seen corresponding path program 1 times [2025-02-08 08:06:12,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:12,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663603978] [2025-02-08 08:06:12,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:12,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:12,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 08:06:12,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 08:06:12,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:12,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:12,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:12,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663603978] [2025-02-08 08:06:12,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663603978] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:12,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:12,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:06:12,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672400896] [2025-02-08 08:06:12,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:12,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:06:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:12,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:06:12,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:06:12,517 INFO L87 Difference]: Start difference. First operand 5074 states and 7579 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:14,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:14,012 INFO L93 Difference]: Finished difference Result 7401 states and 10762 transitions. [2025-02-08 08:06:14,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:06:14,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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 35 [2025-02-08 08:06:14,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:14,020 INFO L225 Difference]: With dead ends: 7401 [2025-02-08 08:06:14,020 INFO L226 Difference]: Without dead ends: 7401 [2025-02-08 08:06:14,020 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 [2025-02-08 08:06:14,020 INFO L435 NwaCegarLoop]: 2196 mSDtfsCounter, 2337 mSDsluCounter, 3465 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 5661 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:14,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2341 Valid, 5661 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-08 08:06:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7401 states. [2025-02-08 08:06:14,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7401 to 5070. [2025-02-08 08:06:14,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5070 states, 4247 states have (on average 1.7718389451377443) internal successors, (7525), 5045 states have internal predecessors, (7525), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 08:06:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5070 states to 5070 states and 7571 transitions. [2025-02-08 08:06:14,066 INFO L78 Accepts]: Start accepts. Automaton has 5070 states and 7571 transitions. Word has length 35 [2025-02-08 08:06:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:14,067 INFO L471 AbstractCegarLoop]: Abstraction has 5070 states and 7571 transitions. [2025-02-08 08:06:14,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:14,067 INFO L276 IsEmpty]: Start isEmpty. Operand 5070 states and 7571 transitions. [2025-02-08 08:06:14,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-08 08:06:14,069 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:14,069 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] [2025-02-08 08:06:14,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 08:06:14,069 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr915REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-02-08 08:06:14,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:14,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1138968900, now seen corresponding path program 1 times [2025-02-08 08:06:14,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:14,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251220225] [2025-02-08 08:06:14,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:14,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:14,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-08 08:06:14,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-08 08:06:14,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:14,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:14,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:14,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251220225] [2025-02-08 08:06:14,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251220225] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:14,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:14,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:06:14,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795420776] [2025-02-08 08:06:14,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:14,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:06:14,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:14,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:06:14,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:06:14,185 INFO L87 Difference]: Start difference. First operand 5070 states and 7571 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:14,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:14,388 INFO L93 Difference]: Finished difference Result 5058 states and 7551 transitions. [2025-02-08 08:06:14,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:06:14,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 70 [2025-02-08 08:06:14,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:14,395 INFO L225 Difference]: With dead ends: 5058 [2025-02-08 08:06:14,395 INFO L226 Difference]: Without dead ends: 5058 [2025-02-08 08:06:14,396 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 [2025-02-08 08:06:14,396 INFO L435 NwaCegarLoop]: 2719 mSDtfsCounter, 21 mSDsluCounter, 5407 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8126 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 [2025-02-08 08:06:14,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8126 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 08:06:14,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5058 states. [2025-02-08 08:06:14,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5058 to 5058. [2025-02-08 08:06:14,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5058 states, 4235 states have (on average 1.7721369539551357) internal successors, (7505), 5033 states have internal predecessors, (7505), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 08:06:14,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5058 states to 5058 states and 7551 transitions. [2025-02-08 08:06:14,435 INFO L78 Accepts]: Start accepts. Automaton has 5058 states and 7551 transitions. Word has length 70 [2025-02-08 08:06:14,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:14,436 INFO L471 AbstractCegarLoop]: Abstraction has 5058 states and 7551 transitions. [2025-02-08 08:06:14,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:14,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5058 states and 7551 transitions. [2025-02-08 08:06:14,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-08 08:06:14,437 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:14,437 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] [2025-02-08 08:06:14,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 08:06:14,437 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr915REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-02-08 08:06:14,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:14,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1305437052, now seen corresponding path program 1 times [2025-02-08 08:06:14,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:14,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318557295] [2025-02-08 08:06:14,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:14,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:14,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-08 08:06:14,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-08 08:06:14,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:14,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:14,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318557295] [2025-02-08 08:06:14,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318557295] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:14,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:14,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:06:14,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655565311] [2025-02-08 08:06:14,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:14,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:06:14,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:14,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:06:14,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:06:14,531 INFO L87 Difference]: Start difference. First operand 5058 states and 7551 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 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) [2025-02-08 08:06:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:14,816 INFO L93 Difference]: Finished difference Result 6572 states and 9740 transitions. [2025-02-08 08:06:14,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:06:14,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 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 [2025-02-08 08:06:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:14,825 INFO L225 Difference]: With dead ends: 6572 [2025-02-08 08:06:14,825 INFO L226 Difference]: Without dead ends: 6572 [2025-02-08 08:06:14,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:06:14,826 INFO L435 NwaCegarLoop]: 2735 mSDtfsCounter, 1088 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 5406 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 [2025-02-08 08:06:14,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 5406 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 08:06:14,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2025-02-08 08:06:14,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 5915. [2025-02-08 08:06:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5915 states, 5088 states have (on average 1.7545204402515724) internal successors, (8927), 5886 states have internal predecessors, (8927), 29 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-02-08 08:06:14,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5915 states to 5915 states and 8981 transitions. [2025-02-08 08:06:14,904 INFO L78 Accepts]: Start accepts. Automaton has 5915 states and 8981 transitions. Word has length 78 [2025-02-08 08:06:14,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:14,904 INFO L471 AbstractCegarLoop]: Abstraction has 5915 states and 8981 transitions. [2025-02-08 08:06:14,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 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) [2025-02-08 08:06:14,904 INFO L276 IsEmpty]: Start isEmpty. Operand 5915 states and 8981 transitions. [2025-02-08 08:06:14,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-02-08 08:06:14,905 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:14,905 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] [2025-02-08 08:06:14,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 08:06:14,905 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)] === [2025-02-08 08:06:14,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:14,907 INFO L85 PathProgramCache]: Analyzing trace with hash -653002849, now seen corresponding path program 1 times [2025-02-08 08:06:14,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:14,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976020782] [2025-02-08 08:06:14,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:14,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:14,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-02-08 08:06:14,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-02-08 08:06:14,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:14,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:15,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:15,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976020782] [2025-02-08 08:06:15,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976020782] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:15,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:15,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:06:15,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453874291] [2025-02-08 08:06:15,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:15,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:06:15,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:15,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:06:15,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:06:15,258 INFO L87 Difference]: Start difference. First operand 5915 states and 8981 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:17,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:17,019 INFO L93 Difference]: Finished difference Result 5831 states and 8782 transitions. [2025-02-08 08:06:17,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:06:17,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 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 81 [2025-02-08 08:06:17,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:17,026 INFO L225 Difference]: With dead ends: 5831 [2025-02-08 08:06:17,026 INFO L226 Difference]: Without dead ends: 5831 [2025-02-08 08:06:17,026 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 [2025-02-08 08:06:17,027 INFO L435 NwaCegarLoop]: 1452 mSDtfsCounter, 5288 mSDsluCounter, 2801 mSDsCounter, 0 mSdLazyCounter, 3985 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5298 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 4093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:17,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5298 Valid, 4253 Invalid, 4093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3985 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-08 08:06:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5831 states. [2025-02-08 08:06:17,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5831 to 5275. [2025-02-08 08:06:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 4532 states have (on average 1.7100617828773168) internal successors, (7750), 5246 states have internal predecessors, (7750), 29 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-02-08 08:06:17,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 7804 transitions. [2025-02-08 08:06:17,067 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 7804 transitions. Word has length 81 [2025-02-08 08:06:17,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:17,067 INFO L471 AbstractCegarLoop]: Abstraction has 5275 states and 7804 transitions. [2025-02-08 08:06:17,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:17,067 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 7804 transitions. [2025-02-08 08:06:17,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-02-08 08:06:17,068 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:17,068 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:06:17,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 08:06:17,068 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)] === [2025-02-08 08:06:17,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:17,068 INFO L85 PathProgramCache]: Analyzing trace with hash 255123335, now seen corresponding path program 1 times [2025-02-08 08:06:17,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:17,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901328426] [2025-02-08 08:06:17,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:17,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:17,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-02-08 08:06:17,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-02-08 08:06:17,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:17,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:17,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:17,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901328426] [2025-02-08 08:06:17,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901328426] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:17,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:17,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:06:17,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045156058] [2025-02-08 08:06:17,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:17,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:06:17,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:17,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:06:17,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:06:17,258 INFO L87 Difference]: Start difference. First operand 5275 states and 7804 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:18,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:18,494 INFO L93 Difference]: Finished difference Result 5274 states and 7802 transitions. [2025-02-08 08:06:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:06:18,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 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 86 [2025-02-08 08:06:18,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:18,499 INFO L225 Difference]: With dead ends: 5274 [2025-02-08 08:06:18,499 INFO L226 Difference]: Without dead ends: 5274 [2025-02-08 08:06:18,500 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 [2025-02-08 08:06:18,501 INFO L435 NwaCegarLoop]: 2645 mSDtfsCounter, 2 mSDsluCounter, 5453 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8098 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:18,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8098 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2933 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-08 08:06:18,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5274 states. [2025-02-08 08:06:18,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5274 to 5274. [2025-02-08 08:06:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 4532 states have (on average 1.7096204766107679) internal successors, (7748), 5245 states have internal predecessors, (7748), 29 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-02-08 08:06:18,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 7802 transitions. [2025-02-08 08:06:18,567 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 7802 transitions. Word has length 86 [2025-02-08 08:06:18,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:18,568 INFO L471 AbstractCegarLoop]: Abstraction has 5274 states and 7802 transitions. [2025-02-08 08:06:18,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:18,568 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 7802 transitions. [2025-02-08 08:06:18,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-02-08 08:06:18,568 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:18,569 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:06:18,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 08:06:18,569 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)] === [2025-02-08 08:06:18,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:18,569 INFO L85 PathProgramCache]: Analyzing trace with hash 255123336, now seen corresponding path program 1 times [2025-02-08 08:06:18,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:18,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606210158] [2025-02-08 08:06:18,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:18,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:18,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-02-08 08:06:18,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-02-08 08:06:18,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:18,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:18,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:18,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606210158] [2025-02-08 08:06:18,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606210158] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:18,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:18,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:06:18,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131123119] [2025-02-08 08:06:18,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:18,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:06:18,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:18,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:06:18,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:06:18,872 INFO L87 Difference]: Start difference. First operand 5274 states and 7802 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:20,347 INFO L93 Difference]: Finished difference Result 5273 states and 7800 transitions. [2025-02-08 08:06:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:06:20,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 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 86 [2025-02-08 08:06:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:20,352 INFO L225 Difference]: With dead ends: 5273 [2025-02-08 08:06:20,353 INFO L226 Difference]: Without dead ends: 5273 [2025-02-08 08:06:20,353 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 [2025-02-08 08:06:20,353 INFO L435 NwaCegarLoop]: 2645 mSDtfsCounter, 1 mSDsluCounter, 5427 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8072 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 [2025-02-08 08:06:20,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8072 Invalid, 2957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-08 08:06:20,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5273 states. [2025-02-08 08:06:20,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5273 to 5273. [2025-02-08 08:06:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5273 states, 4530 states have (on average 1.709933774834437) internal successors, (7746), 5244 states have internal predecessors, (7746), 29 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-02-08 08:06:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5273 states to 5273 states and 7800 transitions. [2025-02-08 08:06:20,391 INFO L78 Accepts]: Start accepts. Automaton has 5273 states and 7800 transitions. Word has length 86 [2025-02-08 08:06:20,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:20,391 INFO L471 AbstractCegarLoop]: Abstraction has 5273 states and 7800 transitions. [2025-02-08 08:06:20,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:06:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 5273 states and 7800 transitions. [2025-02-08 08:06:20,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-02-08 08:06:20,392 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:20,392 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] [2025-02-08 08:06:20,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 08:06:20,392 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)] === [2025-02-08 08:06:20,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:20,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1316859204, now seen corresponding path program 1 times [2025-02-08 08:06:20,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:20,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375858173] [2025-02-08 08:06:20,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:20,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:20,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-02-08 08:06:20,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-02-08 08:06:20,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:20,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:20,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:20,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375858173] [2025-02-08 08:06:20,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375858173] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:20,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:20,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:06:20,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439361823] [2025-02-08 08:06:20,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:20,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:06:20,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:20,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:06:20,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:06:20,573 INFO L87 Difference]: Start difference. First operand 5273 states and 7800 transitions. Second operand has 7 states, 5 states have (on average 18.4) internal successors, (92), 6 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) [2025-02-08 08:06:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:22,086 INFO L93 Difference]: Finished difference Result 5291 states and 7835 transitions. [2025-02-08 08:06:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:06:22,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 18.4) internal successors, (92), 6 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 [2025-02-08 08:06:22,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:22,097 INFO L225 Difference]: With dead ends: 5291 [2025-02-08 08:06:22,097 INFO L226 Difference]: Without dead ends: 5291 [2025-02-08 08:06:22,098 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 [2025-02-08 08:06:22,098 INFO L435 NwaCegarLoop]: 2616 mSDtfsCounter, 24 mSDsluCounter, 8308 mSDsCounter, 0 mSdLazyCounter, 2868 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10924 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:22,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 10924 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2868 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-08 08:06:22,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2025-02-08 08:06:22,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 5282. [2025-02-08 08:06:22,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 4538 states have (on average 1.7093433230498016) internal successors, (7757), 5251 states have internal predecessors, (7757), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (39), 27 states have call predecessors, (39), 25 states have call successors, (39) [2025-02-08 08:06:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 7825 transitions. [2025-02-08 08:06:22,184 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 7825 transitions. Word has length 94 [2025-02-08 08:06:22,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:22,184 INFO L471 AbstractCegarLoop]: Abstraction has 5282 states and 7825 transitions. [2025-02-08 08:06:22,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 18.4) internal successors, (92), 6 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) [2025-02-08 08:06:22,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 7825 transitions. [2025-02-08 08:06:22,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-02-08 08:06:22,185 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:22,185 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] [2025-02-08 08:06:22,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 08:06:22,185 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)] === [2025-02-08 08:06:22,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:22,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1316859205, now seen corresponding path program 1 times [2025-02-08 08:06:22,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:22,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150811277] [2025-02-08 08:06:22,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:22,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:22,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-02-08 08:06:22,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-02-08 08:06:22,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:22,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:22,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:22,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150811277] [2025-02-08 08:06:22,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150811277] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:22,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:22,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:06:22,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764397588] [2025-02-08 08:06:22,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:22,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:06:22,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:22,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:06:22,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:06:22,518 INFO L87 Difference]: Start difference. First operand 5282 states and 7825 transitions. Second operand has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 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) [2025-02-08 08:06:24,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:24,039 INFO L93 Difference]: Finished difference Result 5282 states and 7823 transitions. [2025-02-08 08:06:24,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:06:24,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 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 [2025-02-08 08:06:24,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:24,053 INFO L225 Difference]: With dead ends: 5282 [2025-02-08 08:06:24,053 INFO L226 Difference]: Without dead ends: 5282 [2025-02-08 08:06:24,053 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 [2025-02-08 08:06:24,053 INFO L435 NwaCegarLoop]: 2623 mSDtfsCounter, 19 mSDsluCounter, 7720 mSDsCounter, 0 mSdLazyCounter, 3416 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 10343 SdHoareTripleChecker+Invalid, 3425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:24,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 10343 Invalid, 3425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3416 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-08 08:06:24,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5282 states. [2025-02-08 08:06:24,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5282 to 5282. [2025-02-08 08:06:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 4538 states have (on average 1.7089026002644336) internal successors, (7755), 5251 states have internal predecessors, (7755), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (39), 27 states have call predecessors, (39), 25 states have call successors, (39) [2025-02-08 08:06:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 7823 transitions. [2025-02-08 08:06:24,117 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 7823 transitions. Word has length 94 [2025-02-08 08:06:24,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:24,117 INFO L471 AbstractCegarLoop]: Abstraction has 5282 states and 7823 transitions. [2025-02-08 08:06:24,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 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) [2025-02-08 08:06:24,118 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 7823 transitions. [2025-02-08 08:06:24,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-02-08 08:06:24,119 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:24,119 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] [2025-02-08 08:06:24,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-08 08:06:24,119 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)] === [2025-02-08 08:06:24,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:24,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1951206384, now seen corresponding path program 1 times [2025-02-08 08:06:24,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:24,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352680623] [2025-02-08 08:06:24,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:24,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:24,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-02-08 08:06:24,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-02-08 08:06:24,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:24,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:24,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:24,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352680623] [2025-02-08 08:06:24,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352680623] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:06:24,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928496769] [2025-02-08 08:06:24,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:24,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:06:24,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:06:24,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:06:24,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 08:06:24,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-02-08 08:06:24,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-02-08 08:06:24,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:24,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:24,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 08:06:24,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:06:24,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:06:24,801 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-02-08 08:06:24,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-02-08 08:06:24,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:06:24,894 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 [2025-02-08 08:06:25,030 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:06:25,031 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 [2025-02-08 08:06:25,067 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 [2025-02-08 08:06:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:25,092 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:06:25,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928496769] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:06:25,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:06:25,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2025-02-08 08:06:25,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479319065] [2025-02-08 08:06:25,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:06:25,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 08:06:25,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:25,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 08:06:25,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=319, Unknown=5, NotChecked=0, Total=380 [2025-02-08 08:06:25,143 INFO L87 Difference]: Start difference. First operand 5282 states and 7823 transitions. Second operand has 19 states, 16 states have (on average 9.375) internal successors, (150), 18 states have internal predecessors, (150), 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) [2025-02-08 08:06:30,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:30,070 INFO L93 Difference]: Finished difference Result 5289 states and 7829 transitions. [2025-02-08 08:06:30,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 08:06:30,071 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 9.375) internal successors, (150), 18 states have internal predecessors, (150), 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 [2025-02-08 08:06:30,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:30,077 INFO L225 Difference]: With dead ends: 5289 [2025-02-08 08:06:30,077 INFO L226 Difference]: Without dead ends: 5289 [2025-02-08 08:06:30,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=463, Unknown=6, NotChecked=0, Total=552 [2025-02-08 08:06:30,078 INFO L435 NwaCegarLoop]: 1801 mSDtfsCounter, 2666 mSDsluCounter, 23102 mSDsCounter, 0 mSdLazyCounter, 13620 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2680 SdHoareTripleChecker+Valid, 24903 SdHoareTripleChecker+Invalid, 13647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 13620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:30,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2680 Valid, 24903 Invalid, 13647 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 13620 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2025-02-08 08:06:30,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5289 states. [2025-02-08 08:06:30,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5289 to 5286. [2025-02-08 08:06:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 4542 states have (on average 1.7080581241743724) internal successors, (7758), 5254 states have internal predecessors, (7758), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 27 states have call predecessors, (27), 25 states have call successors, (27) [2025-02-08 08:06:30,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 7814 transitions. [2025-02-08 08:06:30,126 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 7814 transitions. Word has length 95 [2025-02-08 08:06:30,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:30,126 INFO L471 AbstractCegarLoop]: Abstraction has 5286 states and 7814 transitions. [2025-02-08 08:06:30,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 9.375) internal successors, (150), 18 states have internal predecessors, (150), 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) [2025-02-08 08:06:30,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 7814 transitions. [2025-02-08 08:06:30,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-02-08 08:06:30,127 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:30,127 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] [2025-02-08 08:06:30,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 08:06:30,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:06:30,328 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)] === [2025-02-08 08:06:30,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:30,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1951206383, now seen corresponding path program 1 times [2025-02-08 08:06:30,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:30,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464633502] [2025-02-08 08:06:30,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:30,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:30,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-02-08 08:06:30,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-02-08 08:06:30,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:30,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:30,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464633502] [2025-02-08 08:06:30,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464633502] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:06:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932553572] [2025-02-08 08:06:30,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:30,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:06:30,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:06:30,808 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:06:30,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 08:06:30,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-02-08 08:06:31,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-02-08 08:06:31,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:31,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:31,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-08 08:06:31,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:06:31,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:06:31,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-08 08:06:31,148 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 08:06:31,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 08:06:31,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:06:31,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 08:06:31,209 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 [2025-02-08 08:06:31,213 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 [2025-02-08 08:06:31,292 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:06:31,293 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 [2025-02-08 08:06:31,299 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 [2025-02-08 08:06:31,319 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 [2025-02-08 08:06:31,322 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 [2025-02-08 08:06:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:31,326 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:06:31,395 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 [2025-02-08 08:06:31,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932553572] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:06:31,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:06:31,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2025-02-08 08:06:31,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10149243] [2025-02-08 08:06:31,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:06:31,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 08:06:31,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:31,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 08:06:31,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=225, Unknown=1, NotChecked=30, Total=306 [2025-02-08 08:06:31,399 INFO L87 Difference]: Start difference. First operand 5286 states and 7814 transitions. Second operand has 15 states, 12 states have (on average 12.0) internal successors, (144), 15 states have internal predecessors, (144), 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) [2025-02-08 08:06:35,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:35,987 INFO L93 Difference]: Finished difference Result 5288 states and 7827 transitions. [2025-02-08 08:06:35,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 08:06:35,987 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 12.0) internal successors, (144), 15 states have internal predecessors, (144), 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 [2025-02-08 08:06:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:35,993 INFO L225 Difference]: With dead ends: 5288 [2025-02-08 08:06:35,993 INFO L226 Difference]: Without dead ends: 5288 [2025-02-08 08:06:35,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=345, Unknown=1, NotChecked=38, Total=462 [2025-02-08 08:06:35,994 INFO L435 NwaCegarLoop]: 1807 mSDtfsCounter, 2662 mSDsluCounter, 13835 mSDsCounter, 0 mSdLazyCounter, 11928 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 15642 SdHoareTripleChecker+Invalid, 11953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 11928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:35,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2676 Valid, 15642 Invalid, 11953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 11928 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-02-08 08:06:35,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5288 states. [2025-02-08 08:06:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5288 to 5276. [2025-02-08 08:06:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5276 states, 4534 states have (on average 1.7086457873842082) internal successors, (7747), 5246 states have internal predecessors, (7747), 29 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-02-08 08:06:36,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5276 states to 5276 states and 7801 transitions. [2025-02-08 08:06:36,034 INFO L78 Accepts]: Start accepts. Automaton has 5276 states and 7801 transitions. Word has length 95 [2025-02-08 08:06:36,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:36,034 INFO L471 AbstractCegarLoop]: Abstraction has 5276 states and 7801 transitions. [2025-02-08 08:06:36,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 12.0) internal successors, (144), 15 states have internal predecessors, (144), 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) [2025-02-08 08:06:36,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5276 states and 7801 transitions. [2025-02-08 08:06:36,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-08 08:06:36,036 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:36,036 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] [2025-02-08 08:06:36,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 08:06:36,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:06:36,240 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)] === [2025-02-08 08:06:36,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:36,241 INFO L85 PathProgramCache]: Analyzing trace with hash 324210832, now seen corresponding path program 1 times [2025-02-08 08:06:36,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:36,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048341364] [2025-02-08 08:06:36,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:36,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:36,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-08 08:06:36,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 08:06:36,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:36,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:36,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:36,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048341364] [2025-02-08 08:06:36,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048341364] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:36,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:36,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-02-08 08:06:36,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150054103] [2025-02-08 08:06:36,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:36,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 08:06:36,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:36,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 08:06:36,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-02-08 08:06:36,566 INFO L87 Difference]: Start difference. First operand 5276 states and 7801 transitions. Second operand has 14 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 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) [2025-02-08 08:06:39,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:39,430 INFO L93 Difference]: Finished difference Result 5295 states and 7835 transitions. [2025-02-08 08:06:39,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 08:06:39,430 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 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 [2025-02-08 08:06:39,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:39,436 INFO L225 Difference]: With dead ends: 5295 [2025-02-08 08:06:39,436 INFO L226 Difference]: Without dead ends: 5295 [2025-02-08 08:06:39,437 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 [2025-02-08 08:06:39,437 INFO L435 NwaCegarLoop]: 1801 mSDtfsCounter, 2684 mSDsluCounter, 14217 mSDsCounter, 0 mSdLazyCounter, 8814 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2698 SdHoareTripleChecker+Valid, 16018 SdHoareTripleChecker+Invalid, 8838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 8814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:39,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2698 Valid, 16018 Invalid, 8838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 8814 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-02-08 08:06:39,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2025-02-08 08:06:39,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 5291. [2025-02-08 08:06:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5291 states, 4548 states have (on average 1.7071240105540897) internal successors, (7764), 5259 states have internal predecessors, (7764), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 27 states have call predecessors, (27), 25 states have call successors, (27) [2025-02-08 08:06:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 7820 transitions. [2025-02-08 08:06:39,484 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 7820 transitions. Word has length 97 [2025-02-08 08:06:39,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:39,484 INFO L471 AbstractCegarLoop]: Abstraction has 5291 states and 7820 transitions. [2025-02-08 08:06:39,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 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) [2025-02-08 08:06:39,485 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 7820 transitions. [2025-02-08 08:06:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-08 08:06:39,485 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:39,485 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] [2025-02-08 08:06:39,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-08 08:06:39,486 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)] === [2025-02-08 08:06:39,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:39,486 INFO L85 PathProgramCache]: Analyzing trace with hash 324210833, now seen corresponding path program 1 times [2025-02-08 08:06:39,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:39,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284378428] [2025-02-08 08:06:39,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:39,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:39,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-08 08:06:39,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 08:06:39,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:39,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:40,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:40,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284378428] [2025-02-08 08:06:40,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284378428] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:40,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:40,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-08 08:06:40,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889710942] [2025-02-08 08:06:40,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:40,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 08:06:40,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:40,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 08:06:40,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-08 08:06:40,019 INFO L87 Difference]: Start difference. First operand 5291 states and 7820 transitions. Second operand has 11 states, 10 states have (on average 9.5) internal successors, (95), 11 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) [2025-02-08 08:06:43,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:43,607 INFO L93 Difference]: Finished difference Result 5294 states and 7833 transitions. [2025-02-08 08:06:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 08:06:43,610 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.5) internal successors, (95), 11 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 [2025-02-08 08:06:43,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:43,616 INFO L225 Difference]: With dead ends: 5294 [2025-02-08 08:06:43,616 INFO L226 Difference]: Without dead ends: 5294 [2025-02-08 08:06:43,616 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 [2025-02-08 08:06:43,619 INFO L435 NwaCegarLoop]: 1808 mSDtfsCounter, 2695 mSDsluCounter, 12390 mSDsCounter, 0 mSdLazyCounter, 10543 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2709 SdHoareTripleChecker+Valid, 14198 SdHoareTripleChecker+Invalid, 10565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 10543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:43,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2709 Valid, 14198 Invalid, 10565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 10543 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-02-08 08:06:43,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2025-02-08 08:06:43,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 5291. [2025-02-08 08:06:43,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5291 states, 4548 states have (on average 1.7066842568161829) internal successors, (7762), 5259 states have internal predecessors, (7762), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 27 states have call predecessors, (27), 25 states have call successors, (27) [2025-02-08 08:06:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 7818 transitions. [2025-02-08 08:06:43,704 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 7818 transitions. Word has length 97 [2025-02-08 08:06:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:43,704 INFO L471 AbstractCegarLoop]: Abstraction has 5291 states and 7818 transitions. [2025-02-08 08:06:43,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.5) internal successors, (95), 11 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) [2025-02-08 08:06:43,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 7818 transitions. [2025-02-08 08:06:43,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-08 08:06:43,704 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:43,705 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] [2025-02-08 08:06:43,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-08 08:06:43,705 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)] === [2025-02-08 08:06:43,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:43,706 INFO L85 PathProgramCache]: Analyzing trace with hash -299055548, now seen corresponding path program 1 times [2025-02-08 08:06:43,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:43,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387133256] [2025-02-08 08:06:43,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:43,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:43,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-08 08:06:43,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-08 08:06:43,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:43,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:44,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:44,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:44,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387133256] [2025-02-08 08:06:44,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387133256] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:06:44,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524896031] [2025-02-08 08:06:44,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:44,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:06:44,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:06:44,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:06:44,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 08:06:44,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-08 08:06:44,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-08 08:06:44,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:44,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:44,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 08:06:44,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:06:44,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:06:44,456 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-02-08 08:06:44,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-02-08 08:06:44,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:06:44,540 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 [2025-02-08 08:06:44,642 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:06:44,642 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 [2025-02-08 08:06:44,713 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:06:44,714 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 [2025-02-08 08:06:44,732 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 [2025-02-08 08:06:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:44,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:06:44,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524896031] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:06:44,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:06:44,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2025-02-08 08:06:44,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207787804] [2025-02-08 08:06:44,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:06:44,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-08 08:06:44,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:44,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-08 08:06:44,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=483, Unknown=34, NotChecked=0, Total=600 [2025-02-08 08:06:44,866 INFO L87 Difference]: Start difference. First operand 5291 states and 7818 transitions. Second operand has 22 states, 19 states have (on average 8.210526315789474) internal successors, (156), 21 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 08:06:49,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:49,673 INFO L93 Difference]: Finished difference Result 5293 states and 7831 transitions. [2025-02-08 08:06:49,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 08:06:49,673 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 8.210526315789474) internal successors, (156), 21 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 98 [2025-02-08 08:06:49,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:49,680 INFO L225 Difference]: With dead ends: 5293 [2025-02-08 08:06:49,680 INFO L226 Difference]: Without dead ends: 5293 [2025-02-08 08:06:49,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=617, Unknown=34, NotChecked=0, Total=756 [2025-02-08 08:06:49,682 INFO L435 NwaCegarLoop]: 1800 mSDtfsCounter, 2653 mSDsluCounter, 21337 mSDsCounter, 0 mSdLazyCounter, 12697 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2667 SdHoareTripleChecker+Valid, 23137 SdHoareTripleChecker+Invalid, 12720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:49,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2667 Valid, 23137 Invalid, 12720 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 12697 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2025-02-08 08:06:49,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5293 states. [2025-02-08 08:06:49,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5293 to 5290. [2025-02-08 08:06:49,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 4548 states have (on average 1.7062445030782762) internal successors, (7760), 5258 states have internal predecessors, (7760), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 27 states have call predecessors, (27), 25 states have call successors, (27) [2025-02-08 08:06:49,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 7816 transitions. [2025-02-08 08:06:49,720 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 7816 transitions. Word has length 98 [2025-02-08 08:06:49,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:49,721 INFO L471 AbstractCegarLoop]: Abstraction has 5290 states and 7816 transitions. [2025-02-08 08:06:49,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 8.210526315789474) internal successors, (156), 21 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 08:06:49,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 7816 transitions. [2025-02-08 08:06:49,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-08 08:06:49,722 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:49,722 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] [2025-02-08 08:06:49,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 08:06:49,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:06:49,923 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)] === [2025-02-08 08:06:49,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:49,923 INFO L85 PathProgramCache]: Analyzing trace with hash -299055547, now seen corresponding path program 1 times [2025-02-08 08:06:49,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:49,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221077543] [2025-02-08 08:06:49,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:49,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:49,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-08 08:06:49,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-08 08:06:49,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:49,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:50,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:50,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221077543] [2025-02-08 08:06:50,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221077543] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:06:50,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847730330] [2025-02-08 08:06:50,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:50,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:06:50,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:06:50,355 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:06:50,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 08:06:50,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-08 08:06:50,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-08 08:06:50,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:50,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:50,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-08 08:06:50,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:06:50,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:06:50,696 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 08:06:50,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 08:06:50,701 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 [2025-02-08 08:06:50,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:06:50,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 08:06:50,758 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 [2025-02-08 08:06:50,762 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 [2025-02-08 08:06:50,835 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:06:50,835 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 [2025-02-08 08:06:50,845 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 [2025-02-08 08:06:50,892 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:06:50,893 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 [2025-02-08 08:06:50,896 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 [2025-02-08 08:06:50,911 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 [2025-02-08 08:06:50,915 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 [2025-02-08 08:06:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:50,921 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:06:50,963 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 [2025-02-08 08:06:50,970 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 [2025-02-08 08:06:51,023 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 [2025-02-08 08:06:51,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847730330] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:06:51,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:06:51,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2025-02-08 08:06:51,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75949897] [2025-02-08 08:06:51,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:06:51,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 08:06:51,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:51,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 08:06:51,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=286, Unknown=3, NotChecked=108, Total=462 [2025-02-08 08:06:51,025 INFO L87 Difference]: Start difference. First operand 5290 states and 7816 transitions. Second operand has 17 states, 14 states have (on average 10.642857142857142) internal successors, (149), 17 states have internal predecessors, (149), 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) [2025-02-08 08:06:55,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:55,747 INFO L93 Difference]: Finished difference Result 5292 states and 7829 transitions. [2025-02-08 08:06:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 08:06:55,748 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 10.642857142857142) internal successors, (149), 17 states have internal predecessors, (149), 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 98 [2025-02-08 08:06:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:55,754 INFO L225 Difference]: With dead ends: 5292 [2025-02-08 08:06:55,754 INFO L226 Difference]: Without dead ends: 5292 [2025-02-08 08:06:55,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=459, Unknown=3, NotChecked=138, Total=702 [2025-02-08 08:06:55,755 INFO L435 NwaCegarLoop]: 1806 mSDtfsCounter, 2662 mSDsluCounter, 13830 mSDsCounter, 0 mSdLazyCounter, 11887 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 15636 SdHoareTripleChecker+Invalid, 11911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 11887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:55,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2676 Valid, 15636 Invalid, 11911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 11887 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-02-08 08:06:55,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2025-02-08 08:06:55,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 5274. [2025-02-08 08:06:55,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 4534 states have (on average 1.707763564181738) internal successors, (7743), 5244 states have internal predecessors, (7743), 29 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-02-08 08:06:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 7797 transitions. [2025-02-08 08:06:55,801 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 7797 transitions. Word has length 98 [2025-02-08 08:06:55,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:55,801 INFO L471 AbstractCegarLoop]: Abstraction has 5274 states and 7797 transitions. [2025-02-08 08:06:55,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 10.642857142857142) internal successors, (149), 17 states have internal predecessors, (149), 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) [2025-02-08 08:06:55,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 7797 transitions. [2025-02-08 08:06:55,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-02-08 08:06:55,802 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:55,802 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] [2025-02-08 08:06:55,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 08:06:56,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-08 08:06:56,006 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)] === [2025-02-08 08:06:56,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:56,006 INFO L85 PathProgramCache]: Analyzing trace with hash -813613411, now seen corresponding path program 1 times [2025-02-08 08:06:56,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:56,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065809284] [2025-02-08 08:06:56,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:56,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:56,021 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-02-08 08:06:56,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-02-08 08:06:56,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:56,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:56,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:56,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065809284] [2025-02-08 08:06:56,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065809284] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:56,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:56,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 08:06:56,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306870349] [2025-02-08 08:06:56,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:56,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 08:06:56,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:56,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 08:06:56,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-02-08 08:06:56,302 INFO L87 Difference]: Start difference. First operand 5274 states and 7797 transitions. Second operand has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 12 states have internal predecessors, (98), 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) [2025-02-08 08:06:58,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:06:58,939 INFO L93 Difference]: Finished difference Result 5299 states and 7837 transitions. [2025-02-08 08:06:58,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 08:06:58,939 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 12 states have internal predecessors, (98), 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 100 [2025-02-08 08:06:58,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:06:58,945 INFO L225 Difference]: With dead ends: 5299 [2025-02-08 08:06:58,945 INFO L226 Difference]: Without dead ends: 5299 [2025-02-08 08:06:58,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:06:58,945 INFO L435 NwaCegarLoop]: 1806 mSDtfsCounter, 2684 mSDsluCounter, 12444 mSDsCounter, 0 mSdLazyCounter, 7791 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2698 SdHoareTripleChecker+Valid, 14250 SdHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 7791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-02-08 08:06:58,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2698 Valid, 14250 Invalid, 7814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 7791 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-02-08 08:06:58,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2025-02-08 08:06:58,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 5295. [2025-02-08 08:06:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 4554 states have (on average 1.7053140096618358) internal successors, (7766), 5263 states have internal predecessors, (7766), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 27 states have call predecessors, (27), 25 states have call successors, (27) [2025-02-08 08:06:58,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 7822 transitions. [2025-02-08 08:06:58,990 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 7822 transitions. Word has length 100 [2025-02-08 08:06:58,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:06:58,991 INFO L471 AbstractCegarLoop]: Abstraction has 5295 states and 7822 transitions. [2025-02-08 08:06:58,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 12 states have internal predecessors, (98), 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) [2025-02-08 08:06:58,991 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 7822 transitions. [2025-02-08 08:06:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-02-08 08:06:58,991 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:06:58,991 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] [2025-02-08 08:06:58,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-08 08:06:58,991 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)] === [2025-02-08 08:06:58,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:06:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash -813613410, now seen corresponding path program 1 times [2025-02-08 08:06:58,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:06:58,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20570732] [2025-02-08 08:06:58,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:06:58,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:06:59,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-02-08 08:06:59,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-02-08 08:06:59,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:06:59,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:06:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:06:59,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:06:59,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20570732] [2025-02-08 08:06:59,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20570732] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:06:59,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:06:59,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 08:06:59,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575732086] [2025-02-08 08:06:59,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:06:59,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 08:06:59,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:06:59,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 08:06:59,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-02-08 08:06:59,438 INFO L87 Difference]: Start difference. First operand 5295 states and 7822 transitions. Second operand has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 12 states have internal predecessors, (98), 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) [2025-02-08 08:07:02,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:07:02,549 INFO L93 Difference]: Finished difference Result 5298 states and 7835 transitions. [2025-02-08 08:07:02,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 08:07:02,549 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 12 states have internal predecessors, (98), 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 100 [2025-02-08 08:07:02,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:07:02,555 INFO L225 Difference]: With dead ends: 5298 [2025-02-08 08:07:02,555 INFO L226 Difference]: Without dead ends: 5298 [2025-02-08 08:07:02,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2025-02-08 08:07:02,555 INFO L435 NwaCegarLoop]: 1807 mSDtfsCounter, 2678 mSDsluCounter, 9231 mSDsCounter, 0 mSdLazyCounter, 8267 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2692 SdHoareTripleChecker+Valid, 11038 SdHoareTripleChecker+Invalid, 8289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 8267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-02-08 08:07:02,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2692 Valid, 11038 Invalid, 8289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 8267 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-02-08 08:07:02,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5298 states. [2025-02-08 08:07:02,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5298 to 5295. [2025-02-08 08:07:02,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 4554 states have (on average 1.704874835309618) internal successors, (7764), 5263 states have internal predecessors, (7764), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 27 states have call predecessors, (27), 25 states have call successors, (27) [2025-02-08 08:07:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 7820 transitions. [2025-02-08 08:07:02,601 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 7820 transitions. Word has length 100 [2025-02-08 08:07:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:07:02,601 INFO L471 AbstractCegarLoop]: Abstraction has 5295 states and 7820 transitions. [2025-02-08 08:07:02,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 12 states have internal predecessors, (98), 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) [2025-02-08 08:07:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 7820 transitions. [2025-02-08 08:07:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-08 08:07:02,602 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:07:02,602 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, 1] [2025-02-08 08:07:02,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-08 08:07:02,602 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)] === [2025-02-08 08:07:02,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:07:02,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1398719383, now seen corresponding path program 1 times [2025-02-08 08:07:02,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:07:02,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269658543] [2025-02-08 08:07:02,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:07:02,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:07:02,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-08 08:07:02,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-08 08:07:02,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:07:02,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:07:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:07:02,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:07:02,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269658543] [2025-02-08 08:07:02,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269658543] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:07:02,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532241518] [2025-02-08 08:07:02,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:07:02,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:07:02,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:07:02,949 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:07:02,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 08:07:03,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-08 08:07:03,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-08 08:07:03,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:07:03,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:07:03,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 08:07:03,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:07:03,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:07:03,262 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-02-08 08:07:03,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-02-08 08:07:03,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:07:03,340 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 [2025-02-08 08:07:03,456 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:07:03,456 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 [2025-02-08 08:07:03,510 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:07:03,511 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 [2025-02-08 08:07:03,553 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:07:03,553 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 [2025-02-08 08:07:03,563 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 [2025-02-08 08:07:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:07:03,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:07:03,614 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 [2025-02-08 08:07:03,624 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 [2025-02-08 08:07:03,628 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$#2.base| (select (select |c_#memory_$Pointer$#2.base| |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 [2025-02-08 08:07:03,647 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 [2025-02-08 08:07:03,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532241518] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:07:03,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:07:03,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2025-02-08 08:07:03,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604864766] [2025-02-08 08:07:03,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:07:03,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 08:07:03,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:07:03,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 08:07:03,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=511, Unknown=10, NotChecked=196, Total=812 [2025-02-08 08:07:03,649 INFO L87 Difference]: Start difference. First operand 5295 states and 7820 transitions. Second operand has 24 states, 21 states have (on average 7.714285714285714) internal successors, (162), 23 states have internal predecessors, (162), 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) [2025-02-08 08:07:08,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 08:07:08,810 INFO L93 Difference]: Finished difference Result 5297 states and 7833 transitions. [2025-02-08 08:07:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 08:07:08,810 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.714285714285714) internal successors, (162), 23 states have internal predecessors, (162), 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 101 [2025-02-08 08:07:08,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 08:07:08,815 INFO L225 Difference]: With dead ends: 5297 [2025-02-08 08:07:08,815 INFO L226 Difference]: Without dead ends: 5297 [2025-02-08 08:07:08,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=646, Unknown=10, NotChecked=220, Total=992 [2025-02-08 08:07:08,816 INFO L435 NwaCegarLoop]: 1799 mSDtfsCounter, 2656 mSDsluCounter, 24848 mSDsCounter, 0 mSdLazyCounter, 14645 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2670 SdHoareTripleChecker+Valid, 26647 SdHoareTripleChecker+Invalid, 14669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 14645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-02-08 08:07:08,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2670 Valid, 26647 Invalid, 14669 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 14645 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2025-02-08 08:07:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5297 states. [2025-02-08 08:07:08,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5297 to 5294. [2025-02-08 08:07:08,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 4554 states have (on average 1.7044356609574) internal successors, (7762), 5262 states have internal predecessors, (7762), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 27 states have call predecessors, (27), 25 states have call successors, (27) [2025-02-08 08:07:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 7818 transitions. [2025-02-08 08:07:08,861 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 7818 transitions. Word has length 101 [2025-02-08 08:07:08,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 08:07:08,861 INFO L471 AbstractCegarLoop]: Abstraction has 5294 states and 7818 transitions. [2025-02-08 08:07:08,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.714285714285714) internal successors, (162), 23 states have internal predecessors, (162), 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) [2025-02-08 08:07:08,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 7818 transitions. [2025-02-08 08:07:08,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-08 08:07:08,862 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 08:07:08,862 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, 1] [2025-02-08 08:07:08,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 08:07:09,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-02-08 08:07:09,063 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)] === [2025-02-08 08:07:09,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:07:09,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1398719382, now seen corresponding path program 1 times [2025-02-08 08:07:09,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:07:09,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49358550] [2025-02-08 08:07:09,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:07:09,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:07:09,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-08 08:07:09,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-08 08:07:09,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:07:09,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:07:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:07:09,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:07:09,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49358550] [2025-02-08 08:07:09,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49358550] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:07:09,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348818293] [2025-02-08 08:07:09,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:07:09,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:07:09,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:07:09,584 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:07:09,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 08:07:09,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-08 08:07:09,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-08 08:07:09,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:07:09,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:07:09,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-08 08:07:09,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:07:09,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:07:09,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-08 08:07:09,880 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 08:07:09,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 08:07:09,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:07:09,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 08:07:09,944 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 [2025-02-08 08:07:09,947 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 [2025-02-08 08:07:10,010 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:07:10,010 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 [2025-02-08 08:07:10,016 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 [2025-02-08 08:07:10,068 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:07:10,068 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 [2025-02-08 08:07:10,073 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 [2025-02-08 08:07:10,123 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 08:07:10,123 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 [2025-02-08 08:07:10,126 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 [2025-02-08 08:07:10,163 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 [2025-02-08 08:07:10,168 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 [2025-02-08 08:07:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:07:10,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:07:10,334 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1730 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1730))) (or (forall ((v_ArrVal_1732 (Array Int Int)) (v_ArrVal_1729 (Array Int Int))) (<= 0 (+ (select (select (store .cse0 (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1729) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1732) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8))) (< (+ 4 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) 0)))) (forall ((v_ArrVal_1730 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1730))) (or (forall ((v_ArrVal_1732 (Array Int Int)) (v_ArrVal_1731 (Array Int Int)) (v_ArrVal_1729 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1729))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store .cse2 .cse3 v_ArrVal_1732) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_1731) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (< (+ 4 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) 0)))))) is different from false [2025-02-08 08:07:10,352 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 [2025-02-08 08:07:10,412 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 [2025-02-08 08:07:10,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348818293] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:07:10,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:07:10,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2025-02-08 08:07:10,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198405384] [2025-02-08 08:07:10,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:07:10,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 08:07:10,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:07:10,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 08:07:10,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=611, Unknown=3, NotChecked=156, Total=870 [2025-02-08 08:07:10,415 INFO L87 Difference]: Start difference. First operand 5294 states and 7818 transitions. Second operand has 23 states, 20 states have (on average 8.1) internal successors, (162), 23 states have internal predecessors, (162), 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)