./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext2/split_list_test05-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext2/split_list_test05-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db322df1d89bf1549765f136e3e3b8000484c0c3108c31998992cf725d6dcc20 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 22:51:46,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 22:51:46,368 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-08 22:51:46,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 22:51:46,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 22:51:46,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 22:51:46,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 22:51:46,400 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 22:51:46,400 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 22:51:46,400 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 22:51:46,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 22:51:46,401 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 22:51:46,401 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 22:51:46,401 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 22:51:46,401 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 22:51:46,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 22:51:46,401 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 22:51:46,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 22:51:46,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 22:51:46,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 22:51:46,402 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-08 22:51:46,402 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-08 22:51:46,402 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-08 22:51:46,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 22:51:46,402 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 22:51:46,402 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-08 22:51:46,402 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 22:51:46,402 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 22:51:46,402 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 22:51:46,403 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 22:51:46,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 22:51:46,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 22:51:46,403 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 22:51:46,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 22:51:46,403 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 22:51:46,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 22:51:46,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 22:51:46,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 22:51:46,404 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 22:51:46,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 22:51:46,404 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 22:51:46,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 22:51:46,404 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db322df1d89bf1549765f136e3e3b8000484c0c3108c31998992cf725d6dcc20 [2025-03-08 22:51:46,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 22:51:46,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 22:51:46,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 22:51:46,626 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 22:51:46,627 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 22:51:46,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext2/split_list_test05-2.i [2025-03-08 22:51:47,770 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59b70fab/be206ad8a93a4bab93c8e07c113f1a19/FLAGdffe3e5f4 [2025-03-08 22:51:48,060 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 22:51:48,061 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext2/split_list_test05-2.i [2025-03-08 22:51:48,070 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59b70fab/be206ad8a93a4bab93c8e07c113f1a19/FLAGdffe3e5f4 [2025-03-08 22:51:48,085 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59b70fab/be206ad8a93a4bab93c8e07c113f1a19 [2025-03-08 22:51:48,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 22:51:48,089 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 22:51:48,090 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 22:51:48,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 22:51:48,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 22:51:48,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:51:48" (1/1) ... [2025-03-08 22:51:48,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436c86d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48, skipping insertion in model container [2025-03-08 22:51:48,096 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:51:48" (1/1) ... [2025-03-08 22:51:48,127 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 22:51:48,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 22:51:48,323 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 22:51:48,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 22:51:48,379 INFO L204 MainTranslator]: Completed translation [2025-03-08 22:51:48,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48 WrapperNode [2025-03-08 22:51:48,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 22:51:48,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 22:51:48,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 22:51:48,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 22:51:48,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48" (1/1) ... [2025-03-08 22:51:48,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48" (1/1) ... [2025-03-08 22:51:48,428 INFO L138 Inliner]: procedures = 125, calls = 95, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 342 [2025-03-08 22:51:48,428 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 22:51:48,428 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 22:51:48,428 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 22:51:48,428 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 22:51:48,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48" (1/1) ... [2025-03-08 22:51:48,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48" (1/1) ... [2025-03-08 22:51:48,439 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48" (1/1) ... [2025-03-08 22:51:48,472 INFO L175 MemorySlicer]: Split 66 memory accesses to 3 slices as follows [2, 10, 54]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 11 writes are split as follows [0, 5, 6]. [2025-03-08 22:51:48,473 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48" (1/1) ... [2025-03-08 22:51:48,473 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48" (1/1) ... [2025-03-08 22:51:48,492 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48" (1/1) ... [2025-03-08 22:51:48,493 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48" (1/1) ... [2025-03-08 22:51:48,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48" (1/1) ... [2025-03-08 22:51:48,500 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48" (1/1) ... [2025-03-08 22:51:48,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 22:51:48,504 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 22:51:48,504 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 22:51:48,504 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 22:51:48,508 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48" (1/1) ... [2025-03-08 22:51:48,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 22:51:48,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:51:48,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 22:51:48,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 22:51:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 22:51:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 22:51:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 22:51:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 22:51:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 22:51:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 22:51:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 22:51:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 22:51:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 22:51:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 22:51:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 22:51:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 22:51:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 22:51:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-08 22:51:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 22:51:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 22:51:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 22:51:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 22:51:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 22:51:48,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 22:51:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure append [2025-03-08 22:51:48,555 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2025-03-08 22:51:48,661 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 22:51:48,662 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 22:51:49,140 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L551: havoc containsHead_#t~mem3#1;havoc containsHead_#t~mem4#1.base, containsHead_#t~mem4#1.offset;havoc containsHead_#t~mem5#1;havoc containsHead_#t~short6#1;havoc containsHead_#t~mem7#1.base, containsHead_#t~mem7#1.offset;havoc containsHead_#t~mem8#1.base, containsHead_#t~mem8#1.offset;havoc containsHead_#t~mem9#1;havoc containsHead_#t~short10#1;havoc containsHead_#t~mem11#1.base, containsHead_#t~mem11#1.offset;havoc containsHead_#t~mem12#1.base, containsHead_#t~mem12#1.offset;havoc containsHead_#t~mem13#1.base, containsHead_#t~mem13#1.offset;havoc containsHead_#t~mem14#1;havoc containsHead_#t~short15#1;havoc containsHead_#t~mem16#1.base, containsHead_#t~mem16#1.offset;havoc containsHead_#t~mem17#1.base, containsHead_#t~mem17#1.offset;havoc containsHead_#t~mem18#1.base, containsHead_#t~mem18#1.offset;havoc containsHead_#t~mem19#1.base, containsHead_#t~mem19#1.offset;havoc containsHead_#t~mem20#1;havoc containsHead_#t~short21#1;havoc containsHead_#t~mem22#1.base, containsHead_#t~mem22#1.offset;havoc containsHead_#t~mem23#1.base, containsHead_#t~mem23#1.offset;havoc containsHead_#t~mem24#1.base, containsHead_#t~mem24#1.offset;havoc containsHead_#t~mem25#1.base, containsHead_#t~mem25#1.offset;havoc containsHead_#t~mem26#1.base, containsHead_#t~mem26#1.offset;havoc containsHead_#t~mem27#1;havoc containsHead_#t~short28#1; [2025-03-08 22:51:49,140 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L555: havoc containsBody_#t~mem29#1;havoc containsBody_#t~mem30#1.base, containsBody_#t~mem30#1.offset;havoc containsBody_#t~mem31#1;havoc containsBody_#t~short32#1;havoc containsBody_#t~mem33#1.base, containsBody_#t~mem33#1.offset;havoc containsBody_#t~mem34#1.base, containsBody_#t~mem34#1.offset;havoc containsBody_#t~mem35#1;havoc containsBody_#t~short36#1;havoc containsBody_#t~mem37#1.base, containsBody_#t~mem37#1.offset;havoc containsBody_#t~mem38#1.base, containsBody_#t~mem38#1.offset;havoc containsBody_#t~mem39#1.base, containsBody_#t~mem39#1.offset;havoc containsBody_#t~mem40#1;havoc containsBody_#t~short41#1;havoc containsBody_#t~mem42#1.base, containsBody_#t~mem42#1.offset;havoc containsBody_#t~mem43#1.base, containsBody_#t~mem43#1.offset;havoc containsBody_#t~mem44#1.base, containsBody_#t~mem44#1.offset;havoc containsBody_#t~mem45#1.base, containsBody_#t~mem45#1.offset;havoc containsBody_#t~mem46#1;havoc containsBody_#t~short47#1;havoc containsBody_#t~mem48#1.base, containsBody_#t~mem48#1.offset;havoc containsBody_#t~mem49#1.base, containsBody_#t~mem49#1.offset;havoc containsBody_#t~mem50#1.base, containsBody_#t~mem50#1.offset;havoc containsBody_#t~mem51#1.base, containsBody_#t~mem51#1.offset;havoc containsBody_#t~mem52#1.base, containsBody_#t~mem52#1.offset;havoc containsBody_#t~mem53#1;havoc containsBody_#t~short54#1; [2025-03-08 22:51:49,222 INFO L? ?]: Removed 359 outVars from TransFormulas that were not future-live. [2025-03-08 22:51:49,222 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 22:51:49,232 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 22:51:49,232 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 22:51:49,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:51:49 BoogieIcfgContainer [2025-03-08 22:51:49,233 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 22:51:49,235 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 22:51:49,235 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 22:51:49,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 22:51:49,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 10:51:48" (1/3) ... [2025-03-08 22:51:49,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542fddda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:51:49, skipping insertion in model container [2025-03-08 22:51:49,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:48" (2/3) ... [2025-03-08 22:51:49,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542fddda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:51:49, skipping insertion in model container [2025-03-08 22:51:49,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:51:49" (3/3) ... [2025-03-08 22:51:49,240 INFO L128 eAbstractionObserver]: Analyzing ICFG split_list_test05-2.i [2025-03-08 22:51:49,251 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 22:51:49,253 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG split_list_test05-2.i that has 2 procedures, 321 locations, 1 initial locations, 11 loop locations, and 147 error locations. [2025-03-08 22:51:49,287 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 22:51:49,297 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;@46062e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 22:51:49,297 INFO L334 AbstractCegarLoop]: Starting to check reachability of 147 error locations. [2025-03-08 22:51:49,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 321 states, 157 states have (on average 2.1146496815286624) internal successors, (332), 306 states have internal predecessors, (332), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 22:51:49,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-08 22:51:49,303 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:49,303 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-08 22:51:49,304 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr119REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 144 more)] === [2025-03-08 22:51:49,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:49,307 INFO L85 PathProgramCache]: Analyzing trace with hash 328650, now seen corresponding path program 1 times [2025-03-08 22:51:49,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:49,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232748311] [2025-03-08 22:51:49,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:49,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:49,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-08 22:51:49,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-08 22:51:49,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:49,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:49,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:49,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232748311] [2025-03-08 22:51:49,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232748311] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:49,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:49,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 22:51:49,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682166804] [2025-03-08 22:51:49,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:49,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:51:49,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:49,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:51:49,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:49,510 INFO L87 Difference]: Start difference. First operand has 321 states, 157 states have (on average 2.1146496815286624) internal successors, (332), 306 states have internal predecessors, (332), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:49,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:49,823 INFO L93 Difference]: Finished difference Result 545 states and 599 transitions. [2025-03-08 22:51:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:51:49,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-03-08 22:51:49,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:49,839 INFO L225 Difference]: With dead ends: 545 [2025-03-08 22:51:49,839 INFO L226 Difference]: Without dead ends: 543 [2025-03-08 22:51:49,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:49,842 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 243 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:49,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 443 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 22:51:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2025-03-08 22:51:49,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 405. [2025-03-08 22:51:49,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 244 states have (on average 2.098360655737705) internal successors, (512), 390 states have internal predecessors, (512), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 22:51:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 542 transitions. [2025-03-08 22:51:49,887 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 542 transitions. Word has length 3 [2025-03-08 22:51:49,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:49,887 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 542 transitions. [2025-03-08 22:51:49,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:49,888 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 542 transitions. [2025-03-08 22:51:49,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-08 22:51:49,888 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:49,888 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-08 22:51:49,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 22:51:49,888 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr120REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 144 more)] === [2025-03-08 22:51:49,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:49,889 INFO L85 PathProgramCache]: Analyzing trace with hash 328651, now seen corresponding path program 1 times [2025-03-08 22:51:49,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:49,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006466412] [2025-03-08 22:51:49,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:49,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:49,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-08 22:51:49,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-08 22:51:49,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:49,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:49,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:49,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006466412] [2025-03-08 22:51:49,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006466412] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:49,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:49,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 22:51:49,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577303079] [2025-03-08 22:51:49,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:49,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:51:49,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:49,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:51:49,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:49,960 INFO L87 Difference]: Start difference. First operand 405 states and 542 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:50,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:50,120 INFO L93 Difference]: Finished difference Result 406 states and 545 transitions. [2025-03-08 22:51:50,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:51:50,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-03-08 22:51:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:50,123 INFO L225 Difference]: With dead ends: 406 [2025-03-08 22:51:50,123 INFO L226 Difference]: Without dead ends: 406 [2025-03-08 22:51:50,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:50,124 INFO L435 NwaCegarLoop]: 349 mSDtfsCounter, 6 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:50,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 561 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:50,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2025-03-08 22:51:50,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 403. [2025-03-08 22:51:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 244 states have (on average 2.0901639344262297) internal successors, (510), 388 states have internal predecessors, (510), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 22:51:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 540 transitions. [2025-03-08 22:51:50,145 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 540 transitions. Word has length 3 [2025-03-08 22:51:50,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:50,145 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 540 transitions. [2025-03-08 22:51:50,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:50,149 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 540 transitions. [2025-03-08 22:51:50,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-08 22:51:50,149 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:50,149 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:50,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 22:51:50,149 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting appendErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 144 more)] === [2025-03-08 22:51:50,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:50,150 INFO L85 PathProgramCache]: Analyzing trace with hash -660595661, now seen corresponding path program 1 times [2025-03-08 22:51:50,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:50,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700360574] [2025-03-08 22:51:50,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:50,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:50,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 22:51:50,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 22:51:50,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:50,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:50,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:50,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700360574] [2025-03-08 22:51:50,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700360574] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:50,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:50,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 22:51:50,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103616248] [2025-03-08 22:51:50,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:50,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:51:50,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:50,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:51:50,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:50,212 INFO L87 Difference]: Start difference. First operand 403 states and 540 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:50,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:50,393 INFO L93 Difference]: Finished difference Result 398 states and 535 transitions. [2025-03-08 22:51:50,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:51:50,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-08 22:51:50,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:50,395 INFO L225 Difference]: With dead ends: 398 [2025-03-08 22:51:50,395 INFO L226 Difference]: Without dead ends: 398 [2025-03-08 22:51:50,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:50,395 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 35 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:50,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 508 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 22:51:50,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2025-03-08 22:51:50,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2025-03-08 22:51:50,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 244 states have (on average 2.069672131147541) internal successors, (505), 383 states have internal predecessors, (505), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 22:51:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 535 transitions. [2025-03-08 22:51:50,413 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 535 transitions. Word has length 10 [2025-03-08 22:51:50,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:50,413 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 535 transitions. [2025-03-08 22:51:50,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:50,413 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 535 transitions. [2025-03-08 22:51:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-08 22:51:50,414 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:50,414 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:50,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 22:51:50,414 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting appendErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 144 more)] === [2025-03-08 22:51:50,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:50,415 INFO L85 PathProgramCache]: Analyzing trace with hash -660595660, now seen corresponding path program 1 times [2025-03-08 22:51:50,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:50,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033515440] [2025-03-08 22:51:50,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:50,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:50,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 22:51:50,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 22:51:50,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:50,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:50,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:50,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033515440] [2025-03-08 22:51:50,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033515440] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:50,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:50,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 22:51:50,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924120934] [2025-03-08 22:51:50,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:50,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:51:50,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:50,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:51:50,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:50,512 INFO L87 Difference]: Start difference. First operand 398 states and 535 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:50,650 INFO L93 Difference]: Finished difference Result 393 states and 530 transitions. [2025-03-08 22:51:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:51:50,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-08 22:51:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:50,653 INFO L225 Difference]: With dead ends: 393 [2025-03-08 22:51:50,653 INFO L226 Difference]: Without dead ends: 393 [2025-03-08 22:51:50,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:50,653 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 35 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:50,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 521 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:50,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2025-03-08 22:51:50,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2025-03-08 22:51:50,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 244 states have (on average 2.0491803278688523) internal successors, (500), 378 states have internal predecessors, (500), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 22:51:50,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 530 transitions. [2025-03-08 22:51:50,662 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 530 transitions. Word has length 10 [2025-03-08 22:51:50,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:50,662 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 530 transitions. [2025-03-08 22:51:50,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:50,663 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 530 transitions. [2025-03-08 22:51:50,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-08 22:51:50,663 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:50,663 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:50,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 22:51:50,663 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting appendErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 144 more)] === [2025-03-08 22:51:50,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:50,663 INFO L85 PathProgramCache]: Analyzing trace with hash 996371303, now seen corresponding path program 1 times [2025-03-08 22:51:50,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:50,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596381919] [2025-03-08 22:51:50,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:50,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:50,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-08 22:51:50,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-08 22:51:50,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:50,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:50,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:50,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596381919] [2025-03-08 22:51:50,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596381919] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:50,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:50,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 22:51:50,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632959542] [2025-03-08 22:51:50,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:50,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 22:51:50,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:50,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 22:51:50,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 22:51:50,803 INFO L87 Difference]: Start difference. First operand 393 states and 530 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:51,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:51,267 INFO L93 Difference]: Finished difference Result 520 states and 572 transitions. [2025-03-08 22:51:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:51:51,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-08 22:51:51,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:51,268 INFO L225 Difference]: With dead ends: 520 [2025-03-08 22:51:51,269 INFO L226 Difference]: Without dead ends: 520 [2025-03-08 22:51:51,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 22:51:51,269 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 303 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:51,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 789 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 22:51:51,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2025-03-08 22:51:51,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 385. [2025-03-08 22:51:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 244 states have (on average 2.0163934426229506) internal successors, (492), 370 states have internal predecessors, (492), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 22:51:51,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 522 transitions. [2025-03-08 22:51:51,282 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 522 transitions. Word has length 11 [2025-03-08 22:51:51,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:51,283 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 522 transitions. [2025-03-08 22:51:51,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:51,285 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 522 transitions. [2025-03-08 22:51:51,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-08 22:51:51,285 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:51,285 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:51,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 22:51:51,285 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting appendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 144 more)] === [2025-03-08 22:51:51,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash 996371304, now seen corresponding path program 1 times [2025-03-08 22:51:51,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:51,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621492876] [2025-03-08 22:51:51,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:51,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:51,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-08 22:51:51,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-08 22:51:51,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:51,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:51,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:51,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621492876] [2025-03-08 22:51:51,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621492876] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:51,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:51,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 22:51:51,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124548857] [2025-03-08 22:51:51,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:51,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 22:51:51,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:51,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 22:51:51,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 22:51:51,443 INFO L87 Difference]: Start difference. First operand 385 states and 522 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:51,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:51,950 INFO L93 Difference]: Finished difference Result 510 states and 562 transitions. [2025-03-08 22:51:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 22:51:51,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-08 22:51:51,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:51,952 INFO L225 Difference]: With dead ends: 510 [2025-03-08 22:51:51,952 INFO L226 Difference]: Without dead ends: 510 [2025-03-08 22:51:51,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 22:51:51,953 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 783 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:51,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 444 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 22:51:51,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2025-03-08 22:51:51,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 376. [2025-03-08 22:51:51,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 244 states have (on average 1.9754098360655739) internal successors, (482), 361 states have internal predecessors, (482), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 22:51:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 512 transitions. [2025-03-08 22:51:51,960 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 512 transitions. Word has length 11 [2025-03-08 22:51:51,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:51,960 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 512 transitions. [2025-03-08 22:51:51,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:51,960 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 512 transitions. [2025-03-08 22:51:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-08 22:51:51,961 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:51,961 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] [2025-03-08 22:51:51,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 22:51:51,961 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting appendErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 144 more)] === [2025-03-08 22:51:51,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:51,961 INFO L85 PathProgramCache]: Analyzing trace with hash -61948573, now seen corresponding path program 1 times [2025-03-08 22:51:51,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:51,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969983751] [2025-03-08 22:51:51,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:51,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:51,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 22:51:51,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 22:51:51,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:51,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:52,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:52,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969983751] [2025-03-08 22:51:52,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969983751] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:52,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:52,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 22:51:52,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646934620] [2025-03-08 22:51:52,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:52,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 22:51:52,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:52,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 22:51:52,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 22:51:52,171 INFO L87 Difference]: Start difference. First operand 376 states and 512 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:52,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:52,291 INFO L93 Difference]: Finished difference Result 398 states and 537 transitions. [2025-03-08 22:51:52,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 22:51:52,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-03-08 22:51:52,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:52,293 INFO L225 Difference]: With dead ends: 398 [2025-03-08 22:51:52,293 INFO L226 Difference]: Without dead ends: 398 [2025-03-08 22:51:52,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-08 22:51:52,294 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 35 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:52,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1848 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:52,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2025-03-08 22:51:52,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 384. [2025-03-08 22:51:52,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 251 states have (on average 1.952191235059761) internal successors, (490), 368 states have internal predecessors, (490), 16 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 22:51:52,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 522 transitions. [2025-03-08 22:51:52,303 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 522 transitions. Word has length 20 [2025-03-08 22:51:52,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:52,303 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 522 transitions. [2025-03-08 22:51:52,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:52,304 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 522 transitions. [2025-03-08 22:51:52,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-08 22:51:52,304 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:52,305 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] [2025-03-08 22:51:52,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 22:51:52,305 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting appendErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 144 more)] === [2025-03-08 22:51:52,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:52,305 INFO L85 PathProgramCache]: Analyzing trace with hash 837644901, now seen corresponding path program 1 times [2025-03-08 22:51:52,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:52,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731484099] [2025-03-08 22:51:52,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:52,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:52,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 22:51:52,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 22:51:52,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:52,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:52,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:52,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:52,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731484099] [2025-03-08 22:51:52,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731484099] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:52,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:52,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 22:51:52,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001358146] [2025-03-08 22:51:52,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:52,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 22:51:52,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:52,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 22:51:52,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-08 22:51:52,580 INFO L87 Difference]: Start difference. First operand 384 states and 522 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:52,736 INFO L93 Difference]: Finished difference Result 389 states and 527 transitions. [2025-03-08 22:51:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 22:51:52,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-03-08 22:51:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:52,737 INFO L225 Difference]: With dead ends: 389 [2025-03-08 22:51:52,738 INFO L226 Difference]: Without dead ends: 389 [2025-03-08 22:51:52,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-08 22:51:52,738 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 271 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:52,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1832 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:52,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2025-03-08 22:51:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 387. [2025-03-08 22:51:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 254 states have (on average 1.9409448818897639) internal successors, (493), 371 states have internal predecessors, (493), 16 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 22:51:52,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 525 transitions. [2025-03-08 22:51:52,747 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 525 transitions. Word has length 22 [2025-03-08 22:51:52,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:52,747 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 525 transitions. [2025-03-08 22:51:52,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:52,747 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 525 transitions. [2025-03-08 22:51:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 22:51:52,748 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:52,748 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:52,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 22:51:52,748 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting appendErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 144 more)] === [2025-03-08 22:51:52,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:52,749 INFO L85 PathProgramCache]: Analyzing trace with hash -725600123, now seen corresponding path program 1 times [2025-03-08 22:51:52,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:52,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092443571] [2025-03-08 22:51:52,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:52,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:52,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 22:51:52,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 22:51:52,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:52,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:53,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:53,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092443571] [2025-03-08 22:51:53,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092443571] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:51:53,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412826614] [2025-03-08 22:51:53,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:53,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:51:53,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:51:53,310 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:51:53,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 22:51:53,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 22:51:53,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 22:51:53,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:53,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:53,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-03-08 22:51:53,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:51:53,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-08 22:51:53,518 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 11 treesize of output 7 [2025-03-08 22:51:53,542 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2025-03-08 22:51:53,619 INFO L349 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2025-03-08 22:51:53,619 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 23 treesize of output 24 [2025-03-08 22:51:53,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:51:53,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 12 [2025-03-08 22:51:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:53,707 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:51:53,931 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 96 treesize of output 90 [2025-03-08 22:51:54,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:54,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412826614] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:51:54,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:51:54,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 21 [2025-03-08 22:51:54,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506939879] [2025-03-08 22:51:54,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:51:54,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-08 22:51:54,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:54,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-08 22:51:54,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2025-03-08 22:51:54,633 INFO L87 Difference]: Start difference. First operand 387 states and 525 transitions. Second operand has 22 states, 21 states have (on average 4.380952380952381) internal successors, (92), 21 states have internal predecessors, (92), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-08 22:51:56,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:56,370 INFO L93 Difference]: Finished difference Result 799 states and 919 transitions. [2025-03-08 22:51:56,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 22:51:56,371 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.380952380952381) internal successors, (92), 21 states have internal predecessors, (92), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2025-03-08 22:51:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:56,374 INFO L225 Difference]: With dead ends: 799 [2025-03-08 22:51:56,374 INFO L226 Difference]: Without dead ends: 799 [2025-03-08 22:51:56,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=809, Unknown=0, NotChecked=0, Total=992 [2025-03-08 22:51:56,377 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 1918 mSDsluCounter, 2330 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1918 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:56,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1918 Valid, 2524 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-08 22:51:56,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2025-03-08 22:51:56,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 392. [2025-03-08 22:51:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 259 states have (on average 1.9189189189189189) internal successors, (497), 376 states have internal predecessors, (497), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 22:51:56,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 529 transitions. [2025-03-08 22:51:56,396 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 529 transitions. Word has length 37 [2025-03-08 22:51:56,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:56,396 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 529 transitions. [2025-03-08 22:51:56,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.380952380952381) internal successors, (92), 21 states have internal predecessors, (92), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-08 22:51:56,396 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 529 transitions. [2025-03-08 22:51:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 22:51:56,399 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:56,399 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:56,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 22:51:56,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:51:56,604 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting appendErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 144 more)] === [2025-03-08 22:51:56,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:56,604 INFO L85 PathProgramCache]: Analyzing trace with hash -725600122, now seen corresponding path program 1 times [2025-03-08 22:51:56,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:56,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433213084] [2025-03-08 22:51:56,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:56,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:56,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 22:51:56,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 22:51:56,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:56,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:57,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:57,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433213084] [2025-03-08 22:51:57,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433213084] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:51:57,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486720850] [2025-03-08 22:51:57,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:57,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:51:57,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:51:57,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:51:57,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 22:51:57,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 22:51:57,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 22:51:57,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:57,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:57,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-03-08 22:51:57,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:51:57,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-08 22:51:57,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-08 22:51:57,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-08 22:51:57,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-08 22:51:57,710 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 36 treesize of output 27 [2025-03-08 22:51:57,825 INFO L349 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2025-03-08 22:51:57,825 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 17 treesize of output 17 [2025-03-08 22:51:57,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2025-03-08 22:51:57,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 12 [2025-03-08 22:51:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:57,918 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:51:58,247 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 34 treesize of output 28 [2025-03-08 22:51:58,258 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 76 treesize of output 70 [2025-03-08 22:51:58,353 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 104 treesize of output 98 [2025-03-08 22:51:58,534 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 44 treesize of output 38 [2025-03-08 22:51:58,638 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 44 treesize of output 38 [2025-03-08 22:51:58,748 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 44 treesize of output 38 [2025-03-08 22:51:58,865 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 44 treesize of output 38 [2025-03-08 22:51:58,973 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 44 treesize of output 38 [2025-03-08 22:51:59,084 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 44 treesize of output 38 [2025-03-08 22:51:59,186 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 44 treesize of output 38 [2025-03-08 22:51:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:59,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486720850] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:51:59,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:51:59,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7, 6] total 29 [2025-03-08 22:51:59,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418738867] [2025-03-08 22:51:59,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:51:59,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-08 22:51:59,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:59,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-08 22:51:59,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2025-03-08 22:51:59,281 INFO L87 Difference]: Start difference. First operand 392 states and 529 transitions. Second operand has 30 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-08 22:52:02,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:52:02,535 INFO L93 Difference]: Finished difference Result 815 states and 937 transitions. [2025-03-08 22:52:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-03-08 22:52:02,536 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2025-03-08 22:52:02,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:52:02,538 INFO L225 Difference]: With dead ends: 815 [2025-03-08 22:52:02,538 INFO L226 Difference]: Without dead ends: 815 [2025-03-08 22:52:02,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 59 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=595, Invalid=2945, Unknown=0, NotChecked=0, Total=3540 [2025-03-08 22:52:02,542 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 2036 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 4083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:52:02,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 2011 Invalid, 4083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 3756 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-08 22:52:02,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2025-03-08 22:52:02,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 391. [2025-03-08 22:52:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 259 states have (on average 1.915057915057915) internal successors, (496), 375 states have internal predecessors, (496), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 22:52:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 528 transitions. [2025-03-08 22:52:02,560 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 528 transitions. Word has length 37 [2025-03-08 22:52:02,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:52:02,561 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 528 transitions. [2025-03-08 22:52:02,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 28 states have internal predecessors, (94), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-08 22:52:02,561 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 528 transitions. [2025-03-08 22:52:02,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2025-03-08 22:52:02,567 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:52:02,568 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:52:02,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 22:52:02,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-08 22:52:02,769 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr113REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 144 more)] === [2025-03-08 22:52:02,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:52:02,769 INFO L85 PathProgramCache]: Analyzing trace with hash 817936309, now seen corresponding path program 1 times [2025-03-08 22:52:02,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:52:02,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256921885] [2025-03-08 22:52:02,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:02,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:52:02,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-03-08 22:52:02,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-03-08 22:52:02,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:02,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:52:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 7 proven. 91 refuted. 0 times theorem prover too weak. 1162 trivial. 0 not checked. [2025-03-08 22:52:02,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:52:02,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256921885] [2025-03-08 22:52:02,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256921885] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:52:02,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998475833] [2025-03-08 22:52:02,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:02,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:52:02,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:52:02,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:52:02,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 22:52:03,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-03-08 22:52:03,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-03-08 22:52:03,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:03,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:52:03,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 22:52:03,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:52:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 1019 trivial. 0 not checked. [2025-03-08 22:52:03,326 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 22:52:03,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998475833] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:52:03,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 22:52:03,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2025-03-08 22:52:03,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897087992] [2025-03-08 22:52:03,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:52:03,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:52:03,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:52:03,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:52:03,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:52:03,328 INFO L87 Difference]: Start difference. First operand 391 states and 528 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 22:52:03,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:52:03,335 INFO L93 Difference]: Finished difference Result 392 states and 529 transitions. [2025-03-08 22:52:03,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:52:03,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 217 [2025-03-08 22:52:03,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:52:03,338 INFO L225 Difference]: With dead ends: 392 [2025-03-08 22:52:03,338 INFO L226 Difference]: Without dead ends: 392 [2025-03-08 22:52:03,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:52:03,338 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 0 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 22:52:03,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 637 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 22:52:03,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2025-03-08 22:52:03,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2025-03-08 22:52:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 260 states have (on average 1.9115384615384616) internal successors, (497), 376 states have internal predecessors, (497), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 22:52:03,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 529 transitions. [2025-03-08 22:52:03,347 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 529 transitions. Word has length 217 [2025-03-08 22:52:03,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:52:03,347 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 529 transitions. [2025-03-08 22:52:03,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 22:52:03,347 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 529 transitions. [2025-03-08 22:52:03,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2025-03-08 22:52:03,350 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:52:03,351 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:52:03,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 22:52:03,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:52:03,551 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr113REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 144 more)] === [2025-03-08 22:52:03,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:52:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash -626870603, now seen corresponding path program 1 times [2025-03-08 22:52:03,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:52:03,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864419849] [2025-03-08 22:52:03,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:03,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:52:03,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 245 statements into 1 equivalence classes. [2025-03-08 22:52:03,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 245 of 245 statements. [2025-03-08 22:52:03,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:03,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:52:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 1 proven. 364 refuted. 0 times theorem prover too weak. 1105 trivial. 0 not checked. [2025-03-08 22:52:04,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:52:04,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864419849] [2025-03-08 22:52:04,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864419849] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:52:04,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815945763] [2025-03-08 22:52:04,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:04,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:52:04,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:52:04,462 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:52:04,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 22:52:04,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 245 statements into 1 equivalence classes. [2025-03-08 22:52:04,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 245 of 245 statements. [2025-03-08 22:52:04,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:04,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:52:04,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-08 22:52:04,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:52:04,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-08 22:52:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 521 proven. 13 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2025-03-08 22:52:05,021 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:52:05,152 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 32 treesize of output 26 [2025-03-08 22:52:05,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 325 proven. 40 refuted. 0 times theorem prover too weak. 1105 trivial. 0 not checked. [2025-03-08 22:52:05,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815945763] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:52:05,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:52:05,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 21 [2025-03-08 22:52:05,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945279241] [2025-03-08 22:52:05,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:52:05,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-08 22:52:05,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:52:05,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-08 22:52:05,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2025-03-08 22:52:05,234 INFO L87 Difference]: Start difference. First operand 392 states and 529 transitions. Second operand has 21 states, 20 states have (on average 5.05) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (30), 4 states have call predecessors, (30), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2025-03-08 22:52:05,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:52:05,774 INFO L93 Difference]: Finished difference Result 385 states and 520 transitions. [2025-03-08 22:52:05,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 22:52:05,774 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.05) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (30), 4 states have call predecessors, (30), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 245 [2025-03-08 22:52:05,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:52:05,776 INFO L225 Difference]: With dead ends: 385 [2025-03-08 22:52:05,776 INFO L226 Difference]: Without dead ends: 385 [2025-03-08 22:52:05,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2025-03-08 22:52:05,777 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 587 mSDsluCounter, 3834 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 4126 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 22:52:05,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 4126 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 22:52:05,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2025-03-08 22:52:05,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2025-03-08 22:52:05,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 253 states have (on average 1.9288537549407114) internal successors, (488), 369 states have internal predecessors, (488), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 22:52:05,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 520 transitions. [2025-03-08 22:52:05,783 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 520 transitions. Word has length 245 [2025-03-08 22:52:05,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:52:05,783 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 520 transitions. [2025-03-08 22:52:05,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.05) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (30), 4 states have call predecessors, (30), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2025-03-08 22:52:05,783 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 520 transitions. [2025-03-08 22:52:05,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2025-03-08 22:52:05,785 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:52:05,785 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:52:05,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 22:52:05,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:52:05,985 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr113REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 144 more)] === [2025-03-08 22:52:05,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:52:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash -264485611, now seen corresponding path program 1 times [2025-03-08 22:52:05,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:52:05,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386237122] [2025-03-08 22:52:05,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:05,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:52:06,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 273 statements into 1 equivalence classes. [2025-03-08 22:52:06,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 273 of 273 statements. [2025-03-08 22:52:06,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:06,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:52:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 77 proven. 427 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2025-03-08 22:52:15,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:52:15,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386237122] [2025-03-08 22:52:15,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386237122] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:52:15,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344282673] [2025-03-08 22:52:15,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:15,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:52:15,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:52:15,077 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:52:15,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 22:52:15,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 273 statements into 1 equivalence classes. [2025-03-08 22:52:15,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 273 of 273 statements. [2025-03-08 22:52:15,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:15,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:52:15,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 2356 conjuncts, 312 conjuncts are in the unsatisfiable core [2025-03-08 22:52:15,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:52:15,703 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 11 treesize of output 7 [2025-03-08 22:52:15,722 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2025-03-08 22:52:15,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:15,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 16 [2025-03-08 22:52:16,037 INFO L349 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2025-03-08 22:52:16,037 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 41 treesize of output 30 [2025-03-08 22:52:16,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 22:52:16,044 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 43 treesize of output 23 [2025-03-08 22:52:16,174 INFO L349 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2025-03-08 22:52:16,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2025-03-08 22:52:16,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 22:52:16,187 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2025-03-08 22:52:16,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 30 [2025-03-08 22:52:16,423 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 22:52:16,430 INFO L349 Elim1Store]: treesize reduction 84, result has 9.7 percent of original size [2025-03-08 22:52:16,430 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 3 case distinctions, treesize of input 33 treesize of output 27 [2025-03-08 22:52:16,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2025-03-08 22:52:16,661 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 22:52:16,674 INFO L349 Elim1Store]: treesize reduction 91, result has 30.5 percent of original size [2025-03-08 22:52:16,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 60 [2025-03-08 22:52:16,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 38 [2025-03-08 22:52:16,824 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 22:52:16,846 INFO L349 Elim1Store]: treesize reduction 115, result has 32.4 percent of original size [2025-03-08 22:52:16,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 78 [2025-03-08 22:52:16,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 46 [2025-03-08 22:52:17,021 INFO L349 Elim1Store]: treesize reduction 146, result has 17.5 percent of original size [2025-03-08 22:52:17,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 54 [2025-03-08 22:52:17,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 34 [2025-03-08 22:52:17,313 INFO L349 Elim1Store]: treesize reduction 252, result has 27.6 percent of original size [2025-03-08 22:52:17,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 59 treesize of output 125 [2025-03-08 22:52:17,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 46 [2025-03-08 22:52:17,671 INFO L349 Elim1Store]: treesize reduction 317, result has 24.0 percent of original size [2025-03-08 22:52:17,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 72 treesize of output 121 [2025-03-08 22:52:17,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 66 [2025-03-08 22:52:18,089 INFO L349 Elim1Store]: treesize reduction 200, result has 33.1 percent of original size [2025-03-08 22:52:18,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 117 [2025-03-08 22:52:18,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 64