./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-1.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/uthash-2.0.2/uthash_SFH_nondet_test4-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:49:50,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:49:50,970 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:49:50,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:49:50,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:49:50,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:49:50,995 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:49:50,995 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:49:50,996 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:49:50,996 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:49:50,996 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:49:50,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:49:50,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:49:50,996 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:49:50,996 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:49:50,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:49:50,997 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:49:50,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:49:50,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:49:50,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:49:50,997 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:49:50,997 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:49:50,997 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:49:50,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:49:50,997 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:49:50,998 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:49:50,998 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:49:50,998 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:49:50,998 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:49:50,998 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:49:50,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:49:50,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:49:50,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:49:50,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:49:50,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:49:50,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:49:50,999 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:49:50,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:49:50,999 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:49:50,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:49:50,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:49:50,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:49:50,999 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 -> ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f [2025-03-09 00:49:51,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:49:51,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:49:51,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:49:51,221 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:49:51,222 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:49:51,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-1.i [2025-03-09 00:49:52,352 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84dbe4691/f1b8b73d54d64c5e9bff90d2147e6dbc/FLAGd5f7489d0 [2025-03-09 00:49:52,719 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:49:52,720 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-1.i [2025-03-09 00:49:52,737 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84dbe4691/f1b8b73d54d64c5e9bff90d2147e6dbc/FLAGd5f7489d0 [2025-03-09 00:49:52,751 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84dbe4691/f1b8b73d54d64c5e9bff90d2147e6dbc [2025-03-09 00:49:52,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:49:52,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:49:52,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:49:52,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:49:52,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:49:52,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:49:52" (1/1) ... [2025-03-09 00:49:52,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0b70ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:52, skipping insertion in model container [2025-03-09 00:49:52,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:49:52" (1/1) ... [2025-03-09 00:49:52,791 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:49:53,062 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:49:53,092 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:49:53,096 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:49:53,100 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:49:53,105 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:49:53,123 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:49:53,125 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:49:53,126 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:49:53,129 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:49:53,135 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:49:53,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:49:53,147 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:49:53,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:49:53,263 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:49:53,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:53 WrapperNode [2025-03-09 00:49:53,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:49:53,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:49:53,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:49:53,264 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:49:53,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:53" (1/1) ... [2025-03-09 00:49:53,286 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:53" (1/1) ... [2025-03-09 00:49:53,342 INFO L138 Inliner]: procedures = 176, calls = 326, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1517 [2025-03-09 00:49:53,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:49:53,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:49:53,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:49:53,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:49:53,348 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:53" (1/1) ... [2025-03-09 00:49:53,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:53" (1/1) ... [2025-03-09 00:49:53,363 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:53" (1/1) ... [2025-03-09 00:49:53,433 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [2, 307]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 82 writes are split as follows [0, 82]. [2025-03-09 00:49:53,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:53" (1/1) ... [2025-03-09 00:49:53,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:53" (1/1) ... [2025-03-09 00:49:53,476 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:53" (1/1) ... [2025-03-09 00:49:53,481 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:53" (1/1) ... [2025-03-09 00:49:53,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:53" (1/1) ... [2025-03-09 00:49:53,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:53" (1/1) ... [2025-03-09 00:49:53,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:49:53,502 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:49:53,503 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:49:53,503 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:49:53,503 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:53" (1/1) ... [2025-03-09 00:49:53,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:49:53,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:49:53,527 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) [2025-03-09 00:49:53,529 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 [2025-03-09 00:49:53,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 00:49:53,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 00:49:53,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 00:49:53,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 00:49:53,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-09 00:49:53,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-09 00:49:53,546 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-09 00:49:53,546 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-09 00:49:53,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 00:49:53,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:49:53,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 00:49:53,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 00:49:53,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 00:49:53,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-09 00:49:53,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 00:49:53,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 00:49:53,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 00:49:53,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:49:53,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:49:53,726 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:49:53,728 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:49:55,460 INFO L? ?]: Removed 1493 outVars from TransFormulas that were not future-live. [2025-03-09 00:49:55,460 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:49:55,529 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:49:55,529 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-09 00:49:55,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:49:55 BoogieIcfgContainer [2025-03-09 00:49:55,530 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:49:55,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:49:55,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:49:55,537 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:49:55,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:49:52" (1/3) ... [2025-03-09 00:49:55,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df078a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:49:55, skipping insertion in model container [2025-03-09 00:49:55,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:49:53" (2/3) ... [2025-03-09 00:49:55,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df078a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:49:55, skipping insertion in model container [2025-03-09 00:49:55,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:49:55" (3/3) ... [2025-03-09 00:49:55,538 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test4-1.i [2025-03-09 00:49:55,550 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:49:55,552 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_nondet_test4-1.i that has 3 procedures, 1429 locations, 1 initial locations, 34 loop locations, and 628 error locations. [2025-03-09 00:49:55,605 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:49:55,612 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;@5770292c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:49:55,613 INFO L334 AbstractCegarLoop]: Starting to check reachability of 628 error locations. [2025-03-09 00:49:55,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 1424 states, 794 states have (on average 2.0806045340050376) internal successors, (1652), 1416 states have internal predecessors, (1652), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-09 00:49:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-09 00:49:55,623 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:49:55,624 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-09 00:49:55,624 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:49:55,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:49:55,627 INFO L85 PathProgramCache]: Analyzing trace with hash 53530594, now seen corresponding path program 1 times [2025-03-09 00:49:55,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:49:55,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274428414] [2025-03-09 00:49:55,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:49:55,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:49:55,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 00:49:55,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 00:49:55,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:49:55,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:49:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:49:55,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:49:55,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274428414] [2025-03-09 00:49:55,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274428414] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:49:55,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:49:55,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:49:55,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440307648] [2025-03-09 00:49:55,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:49:55,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:49:55,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:49:55,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:49:55,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:49:55,777 INFO L87 Difference]: Start difference. First operand has 1424 states, 794 states have (on average 2.0806045340050376) internal successors, (1652), 1416 states have internal predecessors, (1652), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:49:56,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:49:56,540 INFO L93 Difference]: Finished difference Result 1427 states and 1607 transitions. [2025-03-09 00:49:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:49:56,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-09 00:49:56,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:49:56,557 INFO L225 Difference]: With dead ends: 1427 [2025-03-09 00:49:56,557 INFO L226 Difference]: Without dead ends: 1424 [2025-03-09 00:49:56,559 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 [2025-03-09 00:49:56,563 INFO L435 NwaCegarLoop]: 1530 mSDtfsCounter, 24 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:49:56,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2446 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-09 00:49:56,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2025-03-09 00:49:56,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1415. [2025-03-09 00:49:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 796 states have (on average 1.9949748743718594) internal successors, (1588), 1407 states have internal predecessors, (1588), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-09 00:49:56,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1600 transitions. [2025-03-09 00:49:56,646 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1600 transitions. Word has length 4 [2025-03-09 00:49:56,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:49:56,646 INFO L471 AbstractCegarLoop]: Abstraction has 1415 states and 1600 transitions. [2025-03-09 00:49:56,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:49:56,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1600 transitions. [2025-03-09 00:49:56,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-09 00:49:56,647 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:49:56,647 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 00:49:56,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 00:49:56,648 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr626REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:49:56,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:49:56,648 INFO L85 PathProgramCache]: Analyzing trace with hash -94967656, now seen corresponding path program 1 times [2025-03-09 00:49:56,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:49:56,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757021510] [2025-03-09 00:49:56,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:49:56,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:49:56,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 00:49:56,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 00:49:56,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:49:56,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:49:56,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:49:56,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:49:56,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757021510] [2025-03-09 00:49:56,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757021510] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:49:56,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:49:56,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:49:56,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951047261] [2025-03-09 00:49:56,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:49:56,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:49:56,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:49:56,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:49:56,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:49:56,742 INFO L87 Difference]: Start difference. First operand 1415 states and 1600 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:49:57,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:49:57,445 INFO L93 Difference]: Finished difference Result 1321 states and 1504 transitions. [2025-03-09 00:49:57,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:49:57,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-09 00:49:57,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:49:57,450 INFO L225 Difference]: With dead ends: 1321 [2025-03-09 00:49:57,451 INFO L226 Difference]: Without dead ends: 1321 [2025-03-09 00:49:57,451 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 [2025-03-09 00:49:57,451 INFO L435 NwaCegarLoop]: 829 mSDtfsCounter, 1346 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:49:57,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 834 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-09 00:49:57,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2025-03-09 00:49:57,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1321. [2025-03-09 00:49:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 796 states have (on average 1.8743718592964824) internal successors, (1492), 1313 states have internal predecessors, (1492), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-09 00:49:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1504 transitions. [2025-03-09 00:49:57,471 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1504 transitions. Word has length 6 [2025-03-09 00:49:57,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:49:57,471 INFO L471 AbstractCegarLoop]: Abstraction has 1321 states and 1504 transitions. [2025-03-09 00:49:57,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:49:57,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1504 transitions. [2025-03-09 00:49:57,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-09 00:49:57,472 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:49:57,472 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 00:49:57,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 00:49:57,472 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr627REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:49:57,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:49:57,473 INFO L85 PathProgramCache]: Analyzing trace with hash -94967655, now seen corresponding path program 1 times [2025-03-09 00:49:57,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:49:57,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426398216] [2025-03-09 00:49:57,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:49:57,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:49:57,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 00:49:57,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 00:49:57,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:49:57,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:49:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:49:57,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:49:57,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426398216] [2025-03-09 00:49:57,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426398216] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:49:57,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:49:57,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:49:57,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713804475] [2025-03-09 00:49:57,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:49:57,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:49:57,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:49:57,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:49:57,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:49:57,577 INFO L87 Difference]: Start difference. First operand 1321 states and 1504 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:49:58,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:49:58,381 INFO L93 Difference]: Finished difference Result 1734 states and 1995 transitions. [2025-03-09 00:49:58,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:49:58,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-09 00:49:58,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:49:58,388 INFO L225 Difference]: With dead ends: 1734 [2025-03-09 00:49:58,389 INFO L226 Difference]: Without dead ends: 1734 [2025-03-09 00:49:58,389 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 [2025-03-09 00:49:58,391 INFO L435 NwaCegarLoop]: 1195 mSDtfsCounter, 815 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:49:58,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1786 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-09 00:49:58,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2025-03-09 00:49:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1582. [2025-03-09 00:49:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1067 states have (on average 1.8406747891283974) internal successors, (1964), 1574 states have internal predecessors, (1964), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-09 00:49:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 1976 transitions. [2025-03-09 00:49:58,420 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 1976 transitions. Word has length 6 [2025-03-09 00:49:58,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:49:58,420 INFO L471 AbstractCegarLoop]: Abstraction has 1582 states and 1976 transitions. [2025-03-09 00:49:58,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:49:58,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 1976 transitions. [2025-03-09 00:49:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-09 00:49:58,421 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:49:58,421 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 00:49:58,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 00:49:58,421 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:49:58,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:49:58,424 INFO L85 PathProgramCache]: Analyzing trace with hash -96620007, now seen corresponding path program 1 times [2025-03-09 00:49:58,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:49:58,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117447515] [2025-03-09 00:49:58,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:49:58,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:49:58,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 00:49:58,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 00:49:58,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:49:58,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:49:58,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:49:58,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:49:58,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117447515] [2025-03-09 00:49:58,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117447515] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:49:58,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:49:58,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:49:58,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142583250] [2025-03-09 00:49:58,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:49:58,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:49:58,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:49:58,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:49:58,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:49:58,477 INFO L87 Difference]: Start difference. First operand 1582 states and 1976 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:49:58,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:49:58,827 INFO L93 Difference]: Finished difference Result 2628 states and 3319 transitions. [2025-03-09 00:49:58,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:49:58,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-09 00:49:58,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:49:58,835 INFO L225 Difference]: With dead ends: 2628 [2025-03-09 00:49:58,835 INFO L226 Difference]: Without dead ends: 2627 [2025-03-09 00:49:58,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:49:58,835 INFO L435 NwaCegarLoop]: 1429 mSDtfsCounter, 992 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 4052 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:49:58,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 4052 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-09 00:49:58,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2025-03-09 00:49:58,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 2328. [2025-03-09 00:49:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2328 states, 1813 states have (on average 1.8201875344732488) internal successors, (3300), 2317 states have internal predecessors, (3300), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:49:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 3318 transitions. [2025-03-09 00:49:58,869 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 3318 transitions. Word has length 6 [2025-03-09 00:49:58,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:49:58,869 INFO L471 AbstractCegarLoop]: Abstraction has 2328 states and 3318 transitions. [2025-03-09 00:49:58,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:49:58,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 3318 transitions. [2025-03-09 00:49:58,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-09 00:49:58,869 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:49:58,869 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:49:58,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 00:49:58,870 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr622REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:49:58,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:49:58,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1371545762, now seen corresponding path program 1 times [2025-03-09 00:49:58,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:49:58,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065910968] [2025-03-09 00:49:58,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:49:58,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:49:58,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 00:49:58,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 00:49:58,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:49:58,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:49:58,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:49:58,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:49:58,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065910968] [2025-03-09 00:49:58,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065910968] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:49:58,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:49:58,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:49:58,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610163365] [2025-03-09 00:49:58,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:49:58,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:49:58,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:49:58,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:49:58,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:49:58,938 INFO L87 Difference]: Start difference. First operand 2328 states and 3318 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:49:59,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:49:59,812 INFO L93 Difference]: Finished difference Result 2403 states and 3424 transitions. [2025-03-09 00:49:59,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:49:59,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-09 00:49:59,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:49:59,820 INFO L225 Difference]: With dead ends: 2403 [2025-03-09 00:49:59,820 INFO L226 Difference]: Without dead ends: 2403 [2025-03-09 00:49:59,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:49:59,821 INFO L435 NwaCegarLoop]: 804 mSDtfsCounter, 1614 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:49:59,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 1477 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-09 00:49:59,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2025-03-09 00:49:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2305. [2025-03-09 00:49:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 1813 states have (on average 1.794815223386652) internal successors, (3254), 2294 states have internal predecessors, (3254), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:49:59,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3272 transitions. [2025-03-09 00:49:59,862 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3272 transitions. Word has length 11 [2025-03-09 00:49:59,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:49:59,862 INFO L471 AbstractCegarLoop]: Abstraction has 2305 states and 3272 transitions. [2025-03-09 00:49:59,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:49:59,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3272 transitions. [2025-03-09 00:49:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-09 00:49:59,863 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:49:59,863 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:49:59,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 00:49:59,863 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr623REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:49:59,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:49:59,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1371545763, now seen corresponding path program 1 times [2025-03-09 00:49:59,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:49:59,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898611056] [2025-03-09 00:49:59,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:49:59,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:49:59,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 00:49:59,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 00:49:59,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:49:59,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:49:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:49:59,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:49:59,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898611056] [2025-03-09 00:49:59,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898611056] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:49:59,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:49:59,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:49:59,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134951100] [2025-03-09 00:49:59,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:49:59,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:49:59,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:49:59,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:49:59,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:49:59,939 INFO L87 Difference]: Start difference. First operand 2305 states and 3272 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:00,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:00,004 INFO L93 Difference]: Finished difference Result 2167 states and 3066 transitions. [2025-03-09 00:50:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:50:00,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-09 00:50:00,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:00,010 INFO L225 Difference]: With dead ends: 2167 [2025-03-09 00:50:00,010 INFO L226 Difference]: Without dead ends: 2167 [2025-03-09 00:50:00,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:50:00,010 INFO L435 NwaCegarLoop]: 1303 mSDtfsCounter, 60 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:00,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 2553 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:50:00,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2025-03-09 00:50:00,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 2167. [2025-03-09 00:50:00,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 1687 states have (on average 1.8067575577949022) internal successors, (3048), 2156 states have internal predecessors, (3048), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:00,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3066 transitions. [2025-03-09 00:50:00,038 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3066 transitions. Word has length 11 [2025-03-09 00:50:00,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:00,038 INFO L471 AbstractCegarLoop]: Abstraction has 2167 states and 3066 transitions. [2025-03-09 00:50:00,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:00,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3066 transitions. [2025-03-09 00:50:00,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-09 00:50:00,038 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:00,038 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:00,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 00:50:00,039 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr599REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:00,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:00,039 INFO L85 PathProgramCache]: Analyzing trace with hash -431877771, now seen corresponding path program 1 times [2025-03-09 00:50:00,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:00,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643794969] [2025-03-09 00:50:00,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:00,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:00,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 00:50:00,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 00:50:00,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:00,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:00,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643794969] [2025-03-09 00:50:00,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643794969] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:00,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:00,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:50:00,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910385650] [2025-03-09 00:50:00,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:00,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:50:00,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:00,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:50:00,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:50:00,087 INFO L87 Difference]: Start difference. First operand 2167 states and 3066 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2025-03-09 00:50:00,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:00,176 INFO L93 Difference]: Finished difference Result 2138 states and 3016 transitions. [2025-03-09 00:50:00,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:50:00,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2025-03-09 00:50:00,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:00,181 INFO L225 Difference]: With dead ends: 2138 [2025-03-09 00:50:00,182 INFO L226 Difference]: Without dead ends: 2138 [2025-03-09 00:50:00,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:50:00,182 INFO L435 NwaCegarLoop]: 1268 mSDtfsCounter, 41 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3776 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:00,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3776 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:50:00,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2025-03-09 00:50:00,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2132. [2025-03-09 00:50:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 1659 states have (on average 1.8034960819770947) internal successors, (2992), 2121 states have internal predecessors, (2992), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:00,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3010 transitions. [2025-03-09 00:50:00,229 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3010 transitions. Word has length 12 [2025-03-09 00:50:00,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:00,229 INFO L471 AbstractCegarLoop]: Abstraction has 2132 states and 3010 transitions. [2025-03-09 00:50:00,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2025-03-09 00:50:00,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3010 transitions. [2025-03-09 00:50:00,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-09 00:50:00,231 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:00,231 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:00,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 00:50:00,231 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr585REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:00,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:00,232 INFO L85 PathProgramCache]: Analyzing trace with hash 386839083, now seen corresponding path program 1 times [2025-03-09 00:50:00,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:00,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562985061] [2025-03-09 00:50:00,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:00,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:00,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-09 00:50:00,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-09 00:50:00,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:00,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:00,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:00,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562985061] [2025-03-09 00:50:00,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562985061] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:00,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:00,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:50:00,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057248804] [2025-03-09 00:50:00,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:00,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:50:00,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:00,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:50:00,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:50:00,379 INFO L87 Difference]: Start difference. First operand 2132 states and 3010 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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) [2025-03-09 00:50:01,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:01,296 INFO L93 Difference]: Finished difference Result 2380 states and 3177 transitions. [2025-03-09 00:50:01,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:50:01,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2025-03-09 00:50:01,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:01,311 INFO L225 Difference]: With dead ends: 2380 [2025-03-09 00:50:01,311 INFO L226 Difference]: Without dead ends: 2380 [2025-03-09 00:50:01,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:50:01,311 INFO L435 NwaCegarLoop]: 1178 mSDtfsCounter, 821 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:01,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 2506 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-09 00:50:01,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2025-03-09 00:50:01,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2128. [2025-03-09 00:50:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 1659 states have (on average 1.7986738999397227) internal successors, (2984), 2117 states have internal predecessors, (2984), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:01,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 3002 transitions. [2025-03-09 00:50:01,340 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 3002 transitions. Word has length 26 [2025-03-09 00:50:01,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:01,340 INFO L471 AbstractCegarLoop]: Abstraction has 2128 states and 3002 transitions. [2025-03-09 00:50:01,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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) [2025-03-09 00:50:01,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 3002 transitions. [2025-03-09 00:50:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-09 00:50:01,341 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:01,342 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:01,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 00:50:01,342 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr570REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:01,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:01,342 INFO L85 PathProgramCache]: Analyzing trace with hash 626448287, now seen corresponding path program 1 times [2025-03-09 00:50:01,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:01,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801264952] [2025-03-09 00:50:01,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:01,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:01,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-09 00:50:01,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-09 00:50:01,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:01,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:01,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:01,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:01,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801264952] [2025-03-09 00:50:01,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801264952] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:01,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:01,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:50:01,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752598388] [2025-03-09 00:50:01,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:01,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:50:01,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:01,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:50:01,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:50:01,436 INFO L87 Difference]: Start difference. First operand 2128 states and 3002 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2025-03-09 00:50:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:01,525 INFO L93 Difference]: Finished difference Result 2128 states and 2994 transitions. [2025-03-09 00:50:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:50:01,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2025-03-09 00:50:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:01,530 INFO L225 Difference]: With dead ends: 2128 [2025-03-09 00:50:01,530 INFO L226 Difference]: Without dead ends: 2128 [2025-03-09 00:50:01,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:50:01,531 INFO L435 NwaCegarLoop]: 1263 mSDtfsCounter, 21 mSDsluCounter, 2495 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3758 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:01,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3758 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:50:01,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2025-03-09 00:50:01,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2128. [2025-03-09 00:50:01,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 1659 states have (on average 1.7938517179023508) internal successors, (2976), 2117 states have internal predecessors, (2976), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 2994 transitions. [2025-03-09 00:50:01,557 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 2994 transitions. Word has length 60 [2025-03-09 00:50:01,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:01,558 INFO L471 AbstractCegarLoop]: Abstraction has 2128 states and 2994 transitions. [2025-03-09 00:50:01,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2025-03-09 00:50:01,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 2994 transitions. [2025-03-09 00:50:01,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-09 00:50:01,560 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:01,560 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:01,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 00:50:01,560 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr570REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:01,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:01,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1721699993, now seen corresponding path program 1 times [2025-03-09 00:50:01,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:01,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058729457] [2025-03-09 00:50:01,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:01,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:01,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-09 00:50:01,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-09 00:50:01,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:01,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:01,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:01,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058729457] [2025-03-09 00:50:01,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058729457] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:01,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:01,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:50:01,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229415832] [2025-03-09 00:50:01,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:01,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:50:01,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:01,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:50:01,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:50:01,640 INFO L87 Difference]: Start difference. First operand 2128 states and 2994 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2025-03-09 00:50:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:01,713 INFO L93 Difference]: Finished difference Result 1899 states and 2593 transitions. [2025-03-09 00:50:01,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:50:01,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2025-03-09 00:50:01,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:01,718 INFO L225 Difference]: With dead ends: 1899 [2025-03-09 00:50:01,718 INFO L226 Difference]: Without dead ends: 1899 [2025-03-09 00:50:01,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:50:01,719 INFO L435 NwaCegarLoop]: 1277 mSDtfsCounter, 54 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:01,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2526 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:50:01,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2025-03-09 00:50:01,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1899. [2025-03-09 00:50:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1899 states, 1430 states have (on average 1.8006993006993006) internal successors, (2575), 1888 states have internal predecessors, (2575), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2593 transitions. [2025-03-09 00:50:01,757 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2593 transitions. Word has length 68 [2025-03-09 00:50:01,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:01,757 INFO L471 AbstractCegarLoop]: Abstraction has 1899 states and 2593 transitions. [2025-03-09 00:50:01,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2025-03-09 00:50:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2593 transitions. [2025-03-09 00:50:01,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-09 00:50:01,758 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:01,758 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:01,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 00:50:01,758 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr541REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:01,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:01,759 INFO L85 PathProgramCache]: Analyzing trace with hash -666044711, now seen corresponding path program 1 times [2025-03-09 00:50:01,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:01,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407831880] [2025-03-09 00:50:01,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:01,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:01,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-09 00:50:01,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-09 00:50:01,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:01,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:02,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:02,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:02,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407831880] [2025-03-09 00:50:02,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407831880] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:02,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:02,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 00:50:02,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602833455] [2025-03-09 00:50:02,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:02,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 00:50:02,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:02,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 00:50:02,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:50:02,107 INFO L87 Difference]: Start difference. First operand 1899 states and 2593 transitions. Second operand has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 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) [2025-03-09 00:50:02,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:02,949 INFO L93 Difference]: Finished difference Result 1815 states and 2468 transitions. [2025-03-09 00:50:02,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:50:02,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 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 71 [2025-03-09 00:50:02,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:02,953 INFO L225 Difference]: With dead ends: 1815 [2025-03-09 00:50:02,953 INFO L226 Difference]: Without dead ends: 1815 [2025-03-09 00:50:02,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:50:02,954 INFO L435 NwaCegarLoop]: 530 mSDtfsCounter, 2259 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2265 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:02,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2265 Valid, 1007 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-09 00:50:02,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2025-03-09 00:50:02,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1544. [2025-03-09 00:50:02,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1159 states have (on average 1.6980155306298532) internal successors, (1968), 1533 states have internal predecessors, (1968), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:02,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1986 transitions. [2025-03-09 00:50:02,971 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1986 transitions. Word has length 71 [2025-03-09 00:50:02,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:02,971 INFO L471 AbstractCegarLoop]: Abstraction has 1544 states and 1986 transitions. [2025-03-09 00:50:02,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 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) [2025-03-09 00:50:02,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1986 transitions. [2025-03-09 00:50:02,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-09 00:50:02,972 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:02,972 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:02,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 00:50:02,973 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr534REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:02,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:02,973 INFO L85 PathProgramCache]: Analyzing trace with hash -107260813, now seen corresponding path program 1 times [2025-03-09 00:50:02,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:02,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865651908] [2025-03-09 00:50:02,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:02,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:02,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-09 00:50:02,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-09 00:50:02,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:02,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:03,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:03,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:03,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865651908] [2025-03-09 00:50:03,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865651908] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:03,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:03,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:50:03,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126087083] [2025-03-09 00:50:03,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:03,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:50:03,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:03,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:50:03,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:50:03,204 INFO L87 Difference]: Start difference. First operand 1544 states and 1986 transitions. Second operand has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 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) [2025-03-09 00:50:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:03,846 INFO L93 Difference]: Finished difference Result 1543 states and 1984 transitions. [2025-03-09 00:50:03,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:50:03,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 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 76 [2025-03-09 00:50:03,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:03,850 INFO L225 Difference]: With dead ends: 1543 [2025-03-09 00:50:03,850 INFO L226 Difference]: Without dead ends: 1543 [2025-03-09 00:50:03,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:50:03,851 INFO L435 NwaCegarLoop]: 1189 mSDtfsCounter, 2 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:03,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3296 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-09 00:50:03,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2025-03-09 00:50:03,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2025-03-09 00:50:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1159 states have (on average 1.6962899050905953) internal successors, (1966), 1532 states have internal predecessors, (1966), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 1984 transitions. [2025-03-09 00:50:03,870 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 1984 transitions. Word has length 76 [2025-03-09 00:50:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:03,870 INFO L471 AbstractCegarLoop]: Abstraction has 1543 states and 1984 transitions. [2025-03-09 00:50:03,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 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) [2025-03-09 00:50:03,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 1984 transitions. [2025-03-09 00:50:03,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-09 00:50:03,872 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:03,872 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:03,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 00:50:03,872 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr535REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:03,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash -107260812, now seen corresponding path program 1 times [2025-03-09 00:50:03,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:03,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468419982] [2025-03-09 00:50:03,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:03,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:03,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-09 00:50:03,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-09 00:50:03,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:03,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:04,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:04,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:04,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468419982] [2025-03-09 00:50:04,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468419982] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:04,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:04,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:50:04,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606502374] [2025-03-09 00:50:04,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:04,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:50:04,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:04,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:50:04,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:50:04,232 INFO L87 Difference]: Start difference. First operand 1543 states and 1984 transitions. Second operand has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 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) [2025-03-09 00:50:05,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:05,053 INFO L93 Difference]: Finished difference Result 1542 states and 1982 transitions. [2025-03-09 00:50:05,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:50:05,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 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 76 [2025-03-09 00:50:05,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:05,056 INFO L225 Difference]: With dead ends: 1542 [2025-03-09 00:50:05,056 INFO L226 Difference]: Without dead ends: 1542 [2025-03-09 00:50:05,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:50:05,057 INFO L435 NwaCegarLoop]: 1189 mSDtfsCounter, 1 mSDsluCounter, 2122 mSDsCounter, 0 mSdLazyCounter, 1589 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3311 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:05,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3311 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1589 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-09 00:50:05,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2025-03-09 00:50:05,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2025-03-09 00:50:05,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1157 states have (on average 1.6974935177182369) internal successors, (1964), 1531 states have internal predecessors, (1964), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 1982 transitions. [2025-03-09 00:50:05,071 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 1982 transitions. Word has length 76 [2025-03-09 00:50:05,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:05,071 INFO L471 AbstractCegarLoop]: Abstraction has 1542 states and 1982 transitions. [2025-03-09 00:50:05,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 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) [2025-03-09 00:50:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 1982 transitions. [2025-03-09 00:50:05,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-09 00:50:05,072 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:05,072 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:05,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-09 00:50:05,072 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:05,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:05,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1955115344, now seen corresponding path program 1 times [2025-03-09 00:50:05,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:05,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267605742] [2025-03-09 00:50:05,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:05,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:05,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-09 00:50:05,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-09 00:50:05,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:05,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:05,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:05,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267605742] [2025-03-09 00:50:05,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267605742] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:05,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:05,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:50:05,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386724658] [2025-03-09 00:50:05,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:05,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 00:50:05,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:05,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 00:50:05,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:50:05,247 INFO L87 Difference]: Start difference. First operand 1542 states and 1982 transitions. Second operand has 7 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:06,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:06,275 INFO L93 Difference]: Finished difference Result 1560 states and 2012 transitions. [2025-03-09 00:50:06,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:50:06,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2025-03-09 00:50:06,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:06,280 INFO L225 Difference]: With dead ends: 1560 [2025-03-09 00:50:06,281 INFO L226 Difference]: Without dead ends: 1560 [2025-03-09 00:50:06,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-09 00:50:06,281 INFO L435 NwaCegarLoop]: 1178 mSDtfsCounter, 6 mSDsluCounter, 4033 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5211 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:06,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5211 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-09 00:50:06,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2025-03-09 00:50:06,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1551. [2025-03-09 00:50:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1551 states, 1165 states have (on average 1.6952789699570816) internal successors, (1975), 1538 states have internal predecessors, (1975), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2025-03-09 00:50:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 2002 transitions. [2025-03-09 00:50:06,306 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 2002 transitions. Word has length 84 [2025-03-09 00:50:06,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:06,307 INFO L471 AbstractCegarLoop]: Abstraction has 1551 states and 2002 transitions. [2025-03-09 00:50:06,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:06,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 2002 transitions. [2025-03-09 00:50:06,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-09 00:50:06,308 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:06,308 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:06,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 00:50:06,309 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr531REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:06,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:06,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1955115345, now seen corresponding path program 1 times [2025-03-09 00:50:06,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:06,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057984834] [2025-03-09 00:50:06,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:06,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:06,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-09 00:50:06,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-09 00:50:06,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:06,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:06,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:06,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057984834] [2025-03-09 00:50:06,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057984834] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:06,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:06,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 00:50:06,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396721619] [2025-03-09 00:50:06,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:06,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 00:50:06,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:06,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 00:50:06,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:50:06,661 INFO L87 Difference]: Start difference. First operand 1551 states and 2002 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:07,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:07,693 INFO L93 Difference]: Finished difference Result 1551 states and 2000 transitions. [2025-03-09 00:50:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:50:07,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2025-03-09 00:50:07,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:07,697 INFO L225 Difference]: With dead ends: 1551 [2025-03-09 00:50:07,697 INFO L226 Difference]: Without dead ends: 1551 [2025-03-09 00:50:07,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:50:07,697 INFO L435 NwaCegarLoop]: 1185 mSDtfsCounter, 1 mSDsluCounter, 3098 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4283 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:07,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4283 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-09 00:50:07,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2025-03-09 00:50:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1551. [2025-03-09 00:50:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1551 states, 1165 states have (on average 1.6935622317596566) internal successors, (1973), 1538 states have internal predecessors, (1973), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2025-03-09 00:50:07,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 2000 transitions. [2025-03-09 00:50:07,712 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 2000 transitions. Word has length 84 [2025-03-09 00:50:07,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:07,712 INFO L471 AbstractCegarLoop]: Abstraction has 1551 states and 2000 transitions. [2025-03-09 00:50:07,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:07,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 2000 transitions. [2025-03-09 00:50:07,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-09 00:50:07,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:07,713 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:07,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-09 00:50:07,713 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:07,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:07,713 INFO L85 PathProgramCache]: Analyzing trace with hash -2068807710, now seen corresponding path program 1 times [2025-03-09 00:50:07,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:07,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585192684] [2025-03-09 00:50:07,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:07,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:07,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-09 00:50:07,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-09 00:50:07,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:07,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:08,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:08,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:08,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585192684] [2025-03-09 00:50:08,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585192684] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:08,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976118517] [2025-03-09 00:50:08,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:08,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:08,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:08,029 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) [2025-03-09 00:50:08,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 00:50:08,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-09 00:50:08,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-09 00:50:08,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:08,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:08,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-09 00:50:08,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:08,224 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 [2025-03-09 00:50:08,332 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-09 00:50:08,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-09 00:50:08,342 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 [2025-03-09 00:50:08,392 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:08,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:08,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-09 00:50:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:08,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:50:08,465 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2025-03-09 00:50:08,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2025-03-09 00:50:08,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976118517] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:08,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:50:08,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2025-03-09 00:50:08,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590646582] [2025-03-09 00:50:08,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:50:08,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 00:50:08,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:08,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 00:50:08,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=170, Unknown=5, NotChecked=0, Total=210 [2025-03-09 00:50:08,494 INFO L87 Difference]: Start difference. First operand 1551 states and 2000 transitions. Second operand has 14 states, 12 states have (on average 10.0) internal successors, (120), 13 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:50:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:10,185 INFO L93 Difference]: Finished difference Result 1550 states and 1998 transitions. [2025-03-09 00:50:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 00:50:10,186 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.0) internal successors, (120), 13 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 85 [2025-03-09 00:50:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:10,188 INFO L225 Difference]: With dead ends: 1550 [2025-03-09 00:50:10,188 INFO L226 Difference]: Without dead ends: 1550 [2025-03-09 00:50:10,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=373, Unknown=5, NotChecked=0, Total=462 [2025-03-09 00:50:10,189 INFO L435 NwaCegarLoop]: 705 mSDtfsCounter, 1145 mSDsluCounter, 5488 mSDsCounter, 0 mSdLazyCounter, 4819 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 6193 SdHoareTripleChecker+Invalid, 4840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:10,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 6193 Invalid, 4840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 4819 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-09 00:50:10,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2025-03-09 00:50:10,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1550. [2025-03-09 00:50:10,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1165 states have (on average 1.6918454935622318) internal successors, (1971), 1537 states have internal predecessors, (1971), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2025-03-09 00:50:10,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 1998 transitions. [2025-03-09 00:50:10,201 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 1998 transitions. Word has length 85 [2025-03-09 00:50:10,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:10,201 INFO L471 AbstractCegarLoop]: Abstraction has 1550 states and 1998 transitions. [2025-03-09 00:50:10,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.0) internal successors, (120), 13 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:50:10,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 1998 transitions. [2025-03-09 00:50:10,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-09 00:50:10,201 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:10,201 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:10,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 00:50:10,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-09 00:50:10,402 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr531REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:10,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:10,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2068807709, now seen corresponding path program 1 times [2025-03-09 00:50:10,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:10,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056614690] [2025-03-09 00:50:10,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:10,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:10,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-09 00:50:10,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-09 00:50:10,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:10,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:10,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:10,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056614690] [2025-03-09 00:50:10,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056614690] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:10,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73000441] [2025-03-09 00:50:10,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:10,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:10,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:10,857 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) [2025-03-09 00:50:10,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 00:50:10,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-09 00:50:11,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-09 00:50:11,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:11,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:11,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-09 00:50:11,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:11,018 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 [2025-03-09 00:50:11,101 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-09 00:50:11,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-09 00:50:11,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-09 00:50:11,115 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 [2025-03-09 00:50:11,123 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 [2025-03-09 00:50:11,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-09 00:50:11,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-09 00:50:11,270 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:11,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-09 00:50:11,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-09 00:50:11,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-09 00:50:11,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-09 00:50:11,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:11,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:50:11,380 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_630 (Array Int Int))) (<= 0 (+ 16 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_630) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_630 (Array Int Int)) (v_ArrVal_631 (Array Int Int))) (<= (+ 20 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_630) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_631) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-03-09 00:50:11,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73000441] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:11,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:50:11,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2025-03-09 00:50:11,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317996539] [2025-03-09 00:50:11,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:50:11,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 00:50:11,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:11,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 00:50:11,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=225, Unknown=1, NotChecked=30, Total=306 [2025-03-09 00:50:11,383 INFO L87 Difference]: Start difference. First operand 1550 states and 1998 transitions. Second operand has 15 states, 12 states have (on average 10.5) internal successors, (126), 15 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:50:13,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:13,519 INFO L93 Difference]: Finished difference Result 1557 states and 2004 transitions. [2025-03-09 00:50:13,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 00:50:13,520 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 10.5) internal successors, (126), 15 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 85 [2025-03-09 00:50:13,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:13,523 INFO L225 Difference]: With dead ends: 1557 [2025-03-09 00:50:13,523 INFO L226 Difference]: Without dead ends: 1557 [2025-03-09 00:50:13,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=345, Unknown=1, NotChecked=38, Total=462 [2025-03-09 00:50:13,524 INFO L435 NwaCegarLoop]: 710 mSDtfsCounter, 1139 mSDsluCounter, 3905 mSDsCounter, 0 mSdLazyCounter, 5174 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 4615 SdHoareTripleChecker+Invalid, 5203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:13,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 4615 Invalid, 5203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5174 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-09 00:50:13,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2025-03-09 00:50:13,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1545. [2025-03-09 00:50:13,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1161 states have (on average 1.6925064599483204) internal successors, (1965), 1533 states have internal predecessors, (1965), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:13,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1983 transitions. [2025-03-09 00:50:13,546 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1983 transitions. Word has length 85 [2025-03-09 00:50:13,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:13,547 INFO L471 AbstractCegarLoop]: Abstraction has 1545 states and 1983 transitions. [2025-03-09 00:50:13,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 10.5) internal successors, (126), 15 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:50:13,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1983 transitions. [2025-03-09 00:50:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-09 00:50:13,547 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:13,548 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:13,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 00:50:13,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-09 00:50:13,751 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:13,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:13,752 INFO L85 PathProgramCache]: Analyzing trace with hash 790980010, now seen corresponding path program 1 times [2025-03-09 00:50:13,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:13,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198379604] [2025-03-09 00:50:13,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:13,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:13,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-09 00:50:13,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-09 00:50:13,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:13,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:14,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:14,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198379604] [2025-03-09 00:50:14,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198379604] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:14,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:14,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-09 00:50:14,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928394538] [2025-03-09 00:50:14,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:14,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 00:50:14,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:14,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 00:50:14,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-09 00:50:14,092 INFO L87 Difference]: Start difference. First operand 1545 states and 1983 transitions. Second operand has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 13 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:15,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:15,396 INFO L93 Difference]: Finished difference Result 1564 states and 2012 transitions. [2025-03-09 00:50:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 00:50:15,396 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 13 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2025-03-09 00:50:15,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:15,398 INFO L225 Difference]: With dead ends: 1564 [2025-03-09 00:50:15,398 INFO L226 Difference]: Without dead ends: 1564 [2025-03-09 00:50:15,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2025-03-09 00:50:15,399 INFO L435 NwaCegarLoop]: 704 mSDtfsCounter, 1153 mSDsluCounter, 4115 mSDsCounter, 0 mSdLazyCounter, 3770 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 4819 SdHoareTripleChecker+Invalid, 3791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:15,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 4819 Invalid, 3791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 3770 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-09 00:50:15,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2025-03-09 00:50:15,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1560. [2025-03-09 00:50:15,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1175 states have (on average 1.686808510638298) internal successors, (1982), 1546 states have internal predecessors, (1982), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2025-03-09 00:50:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2002 transitions. [2025-03-09 00:50:15,414 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2002 transitions. Word has length 87 [2025-03-09 00:50:15,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:15,414 INFO L471 AbstractCegarLoop]: Abstraction has 1560 states and 2002 transitions. [2025-03-09 00:50:15,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 13 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:15,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2002 transitions. [2025-03-09 00:50:15,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-09 00:50:15,416 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:15,416 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:15,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-09 00:50:15,416 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr527REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:15,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash 790980011, now seen corresponding path program 1 times [2025-03-09 00:50:15,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:15,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258946852] [2025-03-09 00:50:15,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:15,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:15,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-09 00:50:15,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-09 00:50:15,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:15,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:15,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:15,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258946852] [2025-03-09 00:50:15,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258946852] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:15,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:15,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-09 00:50:15,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483843560] [2025-03-09 00:50:15,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:15,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 00:50:15,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:15,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 00:50:15,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-09 00:50:15,801 INFO L87 Difference]: Start difference. First operand 1560 states and 2002 transitions. Second operand has 11 states, 10 states have (on average 8.5) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:17,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:17,667 INFO L93 Difference]: Finished difference Result 1563 states and 2010 transitions. [2025-03-09 00:50:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 00:50:17,667 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.5) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2025-03-09 00:50:17,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:17,670 INFO L225 Difference]: With dead ends: 1563 [2025-03-09 00:50:17,670 INFO L226 Difference]: Without dead ends: 1563 [2025-03-09 00:50:17,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2025-03-09 00:50:17,670 INFO L435 NwaCegarLoop]: 711 mSDtfsCounter, 1162 mSDsluCounter, 4058 mSDsCounter, 0 mSdLazyCounter, 4972 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 4769 SdHoareTripleChecker+Invalid, 4991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 4972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:17,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 4769 Invalid, 4991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 4972 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-09 00:50:17,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2025-03-09 00:50:17,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1560. [2025-03-09 00:50:17,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1175 states have (on average 1.6851063829787234) internal successors, (1980), 1546 states have internal predecessors, (1980), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2025-03-09 00:50:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2000 transitions. [2025-03-09 00:50:17,682 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2000 transitions. Word has length 87 [2025-03-09 00:50:17,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:17,682 INFO L471 AbstractCegarLoop]: Abstraction has 1560 states and 2000 transitions. [2025-03-09 00:50:17,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.5) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:17,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2000 transitions. [2025-03-09 00:50:17,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-09 00:50:17,683 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:17,683 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:17,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 00:50:17,683 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:17,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:17,683 INFO L85 PathProgramCache]: Analyzing trace with hash 931476952, now seen corresponding path program 1 times [2025-03-09 00:50:17,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:17,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825852597] [2025-03-09 00:50:17,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:17,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:17,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-09 00:50:17,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-09 00:50:17,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:17,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:18,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:18,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825852597] [2025-03-09 00:50:18,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825852597] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:18,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696323428] [2025-03-09 00:50:18,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:18,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:18,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:18,069 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) [2025-03-09 00:50:18,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 00:50:18,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-09 00:50:18,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-09 00:50:18,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:18,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:18,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-09 00:50:18,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:18,252 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 [2025-03-09 00:50:18,328 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-09 00:50:18,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-09 00:50:18,333 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 [2025-03-09 00:50:18,374 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:18,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:18,410 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:18,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:18,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-09 00:50:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:18,422 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:50:18,430 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_880 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_880) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2025-03-09 00:50:18,479 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2025-03-09 00:50:18,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2025-03-09 00:50:18,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696323428] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:18,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:50:18,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 15 [2025-03-09 00:50:18,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724765764] [2025-03-09 00:50:18,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:50:18,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 00:50:18,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:18,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 00:50:18,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=250, Unknown=10, NotChecked=32, Total=342 [2025-03-09 00:50:18,514 INFO L87 Difference]: Start difference. First operand 1560 states and 2000 transitions. Second operand has 16 states, 14 states have (on average 8.928571428571429) internal successors, (125), 15 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:20,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:20,724 INFO L93 Difference]: Finished difference Result 1562 states and 2008 transitions. [2025-03-09 00:50:20,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 00:50:20,724 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 8.928571428571429) internal successors, (125), 15 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2025-03-09 00:50:20,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:20,726 INFO L225 Difference]: With dead ends: 1562 [2025-03-09 00:50:20,726 INFO L226 Difference]: Without dead ends: 1562 [2025-03-09 00:50:20,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=488, Unknown=10, NotChecked=46, Total=650 [2025-03-09 00:50:20,731 INFO L435 NwaCegarLoop]: 704 mSDtfsCounter, 1135 mSDsluCounter, 7496 mSDsCounter, 0 mSdLazyCounter, 6429 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 8200 SdHoareTripleChecker+Invalid, 6449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 6429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:20,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 8200 Invalid, 6449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 6429 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-09 00:50:20,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2025-03-09 00:50:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1559. [2025-03-09 00:50:20,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1175 states have (on average 1.6834042553191488) internal successors, (1978), 1545 states have internal predecessors, (1978), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2025-03-09 00:50:20,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 1998 transitions. [2025-03-09 00:50:20,742 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 1998 transitions. Word has length 88 [2025-03-09 00:50:20,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:20,742 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 1998 transitions. [2025-03-09 00:50:20,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 8.928571428571429) internal successors, (125), 15 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 1998 transitions. [2025-03-09 00:50:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-09 00:50:20,742 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:20,742 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:20,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 00:50:20,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:20,946 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr527REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:20,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:20,947 INFO L85 PathProgramCache]: Analyzing trace with hash 931476953, now seen corresponding path program 1 times [2025-03-09 00:50:20,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:20,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002296724] [2025-03-09 00:50:20,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:20,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:20,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-09 00:50:20,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-09 00:50:20,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:20,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:21,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:21,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002296724] [2025-03-09 00:50:21,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002296724] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:21,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826572651] [2025-03-09 00:50:21,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:21,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:21,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:21,464 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) [2025-03-09 00:50:21,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 00:50:21,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-09 00:50:21,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-09 00:50:21,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:21,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:21,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-09 00:50:21,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:21,632 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 [2025-03-09 00:50:21,710 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-09 00:50:21,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-09 00:50:21,733 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 [2025-03-09 00:50:21,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:50:21,814 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:21,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 48 [2025-03-09 00:50:21,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-09 00:50:21,861 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:21,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2025-03-09 00:50:21,866 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 49 treesize of output 30 [2025-03-09 00:50:21,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2025-03-09 00:50:21,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2025-03-09 00:50:21,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:21,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:50:21,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 00:50:21,966 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 48 treesize of output 52 [2025-03-09 00:50:21,997 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1019 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem52#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1019) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (forall ((v_prenex_2 (Array Int Int))) (<= 0 (+ 4 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_prenex_2) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1020 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1020) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (+ |c_ULTIMATE.start_main_#t~mem52#1.offset| 13))))) is different from false [2025-03-09 00:50:22,011 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1020 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1020) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (+ (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 13))) (forall ((v_prenex_2 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_prenex_2) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4))) (forall ((v_ArrVal_1019 (Array Int Int))) (= .cse0 (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1019) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2025-03-09 00:50:22,051 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1019 (Array Int Int)) (v_ArrVal_1025 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1025))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_1019) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) (forall ((v_ArrVal_1026 (Array Int Int)) (v_ArrVal_1025 (Array Int Int)) (v_ArrVal_1020 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1026))) (< (select (select (store .cse3 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1025) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1020) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (+ (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 13)))) (forall ((v_ArrVal_1026 (Array Int Int)) (v_ArrVal_1025 (Array Int Int)) (v_prenex_2 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1026) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1025) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_prenex_2) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 4))))) is different from false [2025-03-09 00:50:22,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826572651] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:22,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:50:22,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2025-03-09 00:50:22,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619777521] [2025-03-09 00:50:22,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:50:22,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 00:50:22,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:22,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 00:50:22,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=360, Unknown=3, NotChecked=120, Total=552 [2025-03-09 00:50:22,053 INFO L87 Difference]: Start difference. First operand 1559 states and 1998 transitions. Second operand has 19 states, 16 states have (on average 8.3125) internal successors, (133), 19 states have internal predecessors, (133), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:50:24,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:24,185 INFO L93 Difference]: Finished difference Result 1561 states and 2006 transitions. [2025-03-09 00:50:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 00:50:24,185 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 8.3125) internal successors, (133), 19 states have internal predecessors, (133), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 88 [2025-03-09 00:50:24,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:24,188 INFO L225 Difference]: With dead ends: 1561 [2025-03-09 00:50:24,188 INFO L226 Difference]: Without dead ends: 1561 [2025-03-09 00:50:24,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=543, Unknown=3, NotChecked=150, Total=812 [2025-03-09 00:50:24,189 INFO L435 NwaCegarLoop]: 710 mSDtfsCounter, 1139 mSDsluCounter, 5643 mSDsCounter, 0 mSdLazyCounter, 5851 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 6353 SdHoareTripleChecker+Invalid, 5872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 5851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:24,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 6353 Invalid, 5872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 5851 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-09 00:50:24,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2025-03-09 00:50:24,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1543. [2025-03-09 00:50:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1161 states have (on average 1.6890611541774332) internal successors, (1961), 1531 states have internal predecessors, (1961), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:24,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 1979 transitions. [2025-03-09 00:50:24,202 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 1979 transitions. Word has length 88 [2025-03-09 00:50:24,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:24,202 INFO L471 AbstractCegarLoop]: Abstraction has 1543 states and 1979 transitions. [2025-03-09 00:50:24,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 8.3125) internal successors, (133), 19 states have internal predecessors, (133), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:50:24,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 1979 transitions. [2025-03-09 00:50:24,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-09 00:50:24,203 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:24,203 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:24,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 00:50:24,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:24,408 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:24,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:24,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1896153066, now seen corresponding path program 1 times [2025-03-09 00:50:24,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:24,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829852770] [2025-03-09 00:50:24,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:24,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:24,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-09 00:50:24,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-09 00:50:24,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:24,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:24,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:24,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829852770] [2025-03-09 00:50:24,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829852770] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:24,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:24,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-09 00:50:24,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895898467] [2025-03-09 00:50:24,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:24,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 00:50:24,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:24,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 00:50:24,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-09 00:50:24,910 INFO L87 Difference]: Start difference. First operand 1543 states and 1979 transitions. Second operand has 12 states, 11 states have (on average 8.0) internal successors, (88), 12 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:27,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:27,327 INFO L93 Difference]: Finished difference Result 1568 states and 2014 transitions. [2025-03-09 00:50:27,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 00:50:27,330 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 12 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2025-03-09 00:50:27,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:27,332 INFO L225 Difference]: With dead ends: 1568 [2025-03-09 00:50:27,332 INFO L226 Difference]: Without dead ends: 1568 [2025-03-09 00:50:27,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2025-03-09 00:50:27,333 INFO L435 NwaCegarLoop]: 710 mSDtfsCounter, 1148 mSDsluCounter, 5068 mSDsCounter, 0 mSdLazyCounter, 6413 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 5778 SdHoareTripleChecker+Invalid, 6432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 6413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:27,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 5778 Invalid, 6432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 6413 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-09 00:50:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2025-03-09 00:50:27,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1564. [2025-03-09 00:50:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1181 states have (on average 1.6799322607959357) internal successors, (1984), 1550 states have internal predecessors, (1984), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2025-03-09 00:50:27,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2004 transitions. [2025-03-09 00:50:27,344 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2004 transitions. Word has length 90 [2025-03-09 00:50:27,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:27,344 INFO L471 AbstractCegarLoop]: Abstraction has 1564 states and 2004 transitions. [2025-03-09 00:50:27,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 12 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:27,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2004 transitions. [2025-03-09 00:50:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-09 00:50:27,344 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:27,344 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:27,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-09 00:50:27,345 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr522REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:27,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:27,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1896153065, now seen corresponding path program 1 times [2025-03-09 00:50:27,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:27,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209319214] [2025-03-09 00:50:27,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:27,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:27,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-09 00:50:27,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-09 00:50:27,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:27,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:27,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:27,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209319214] [2025-03-09 00:50:27,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209319214] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:27,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:27,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-09 00:50:27,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144478428] [2025-03-09 00:50:27,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:27,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 00:50:27,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:27,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 00:50:27,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-03-09 00:50:27,675 INFO L87 Difference]: Start difference. First operand 1564 states and 2004 transitions. Second operand has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 14 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:29,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:29,526 INFO L93 Difference]: Finished difference Result 1567 states and 2012 transitions. [2025-03-09 00:50:29,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 00:50:29,526 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 14 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2025-03-09 00:50:29,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:29,528 INFO L225 Difference]: With dead ends: 1567 [2025-03-09 00:50:29,528 INFO L226 Difference]: Without dead ends: 1567 [2025-03-09 00:50:29,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2025-03-09 00:50:29,529 INFO L435 NwaCegarLoop]: 704 mSDtfsCounter, 1150 mSDsluCounter, 6136 mSDsCounter, 0 mSdLazyCounter, 5369 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 6840 SdHoareTripleChecker+Invalid, 5390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 5369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:29,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 6840 Invalid, 5390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 5369 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-09 00:50:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2025-03-09 00:50:29,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1564. [2025-03-09 00:50:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1181 states have (on average 1.6782387806943269) internal successors, (1982), 1550 states have internal predecessors, (1982), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2025-03-09 00:50:29,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2002 transitions. [2025-03-09 00:50:29,542 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2002 transitions. Word has length 90 [2025-03-09 00:50:29,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:29,542 INFO L471 AbstractCegarLoop]: Abstraction has 1564 states and 2002 transitions. [2025-03-09 00:50:29,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 14 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:29,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2002 transitions. [2025-03-09 00:50:29,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-09 00:50:29,542 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:29,543 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:29,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-09 00:50:29,543 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:29,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:29,543 INFO L85 PathProgramCache]: Analyzing trace with hash -152561412, now seen corresponding path program 1 times [2025-03-09 00:50:29,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:29,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425735390] [2025-03-09 00:50:29,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:29,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:29,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-09 00:50:29,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-09 00:50:29,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:29,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:30,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:30,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425735390] [2025-03-09 00:50:30,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425735390] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:30,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101320559] [2025-03-09 00:50:30,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:30,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:30,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:30,024 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) [2025-03-09 00:50:30,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 00:50:30,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-09 00:50:30,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-09 00:50:30,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:30,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:30,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-09 00:50:30,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:30,197 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 [2025-03-09 00:50:30,273 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-09 00:50:30,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-09 00:50:30,291 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 [2025-03-09 00:50:30,359 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:30,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2025-03-09 00:50:30,406 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:30,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2025-03-09 00:50:30,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 23 [2025-03-09 00:50:30,494 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:30,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2025-03-09 00:50:30,499 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 51 treesize of output 32 [2025-03-09 00:50:30,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2025-03-09 00:50:30,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2025-03-09 00:50:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:30,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:50:30,681 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 00:50:30,681 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 84 treesize of output 88 [2025-03-09 00:50:30,733 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_prenex_8 (Array Int Int)) (v_ArrVal_1300 (Array Int Int)) (v_ArrVal_1299 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1299))) (or (< 0 (+ (select (select (store .cse0 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1300) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_prenex_8) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 9)) (< (+ 4 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) 0)))) (forall ((v_ArrVal_1299 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1299))) (or (forall ((v_ArrVal_1302 (Array Int Int)) (v_ArrVal_1300 (Array Int Int))) (< (select (select (store .cse2 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1300) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1302) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (+ |c_ULTIMATE.start_main_#t~mem52#1.offset| 9))) (< (+ 4 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) 0)))) (or (forall ((v_ArrVal_1299 (Array Int Int))) (< (+ 4 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1299) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) 0)) (forall ((v_ArrVal_1301 (Array Int Int)) (v_ArrVal_1300 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem52#1.base| (select (select (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1300))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1301)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2025-03-09 00:50:30,746 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 601 treesize of output 559 [2025-03-09 00:50:30,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 383 treesize of output 375 [2025-03-09 00:50:30,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 375 treesize of output 367 [2025-03-09 00:50:30,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 367 treesize of output 359 [2025-03-09 00:50:30,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 359 treesize of output 351 [2025-03-09 00:50:30,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 351 treesize of output 347 [2025-03-09 00:50:30,841 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1305 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1305) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8)) |c_ULTIMATE.start_main_~user~0#1.base|))) is different from false [2025-03-09 00:50:30,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101320559] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:30,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:50:30,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2025-03-09 00:50:30,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044888241] [2025-03-09 00:50:30,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:50:30,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 00:50:30,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:30,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 00:50:30,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=657, Unknown=2, NotChecked=106, Total=870 [2025-03-09 00:50:30,843 INFO L87 Difference]: Start difference. First operand 1564 states and 2002 transitions. Second operand has 24 states, 21 states have (on average 6.857142857142857) internal successors, (144), 24 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:50:33,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:33,550 INFO L93 Difference]: Finished difference Result 1566 states and 2010 transitions. [2025-03-09 00:50:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 00:50:33,550 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 6.857142857142857) internal successors, (144), 24 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 91 [2025-03-09 00:50:33,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:33,552 INFO L225 Difference]: With dead ends: 1566 [2025-03-09 00:50:33,552 INFO L226 Difference]: Without dead ends: 1566 [2025-03-09 00:50:33,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=954, Unknown=2, NotChecked=130, Total=1260 [2025-03-09 00:50:33,553 INFO L435 NwaCegarLoop]: 709 mSDtfsCounter, 1144 mSDsluCounter, 7380 mSDsCounter, 0 mSdLazyCounter, 7791 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 8089 SdHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 7791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:33,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 8089 Invalid, 7814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 7791 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-09 00:50:33,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2025-03-09 00:50:33,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1563. [2025-03-09 00:50:33,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1181 states have (on average 1.676545300592718) internal successors, (1980), 1549 states have internal predecessors, (1980), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2025-03-09 00:50:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2000 transitions. [2025-03-09 00:50:33,571 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2000 transitions. Word has length 91 [2025-03-09 00:50:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:33,572 INFO L471 AbstractCegarLoop]: Abstraction has 1563 states and 2000 transitions. [2025-03-09 00:50:33,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 6.857142857142857) internal successors, (144), 24 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:50:33,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2000 transitions. [2025-03-09 00:50:33,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-09 00:50:33,572 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:33,572 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:33,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 00:50:33,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-09 00:50:33,775 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr522REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:33,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:33,775 INFO L85 PathProgramCache]: Analyzing trace with hash -152561413, now seen corresponding path program 1 times [2025-03-09 00:50:33,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:33,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323168779] [2025-03-09 00:50:33,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:33,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:33,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-09 00:50:33,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-09 00:50:33,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:33,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:34,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:34,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:34,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323168779] [2025-03-09 00:50:34,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323168779] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:34,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710464245] [2025-03-09 00:50:34,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:34,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:34,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:34,134 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:50:34,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 00:50:34,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-09 00:50:34,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-09 00:50:34,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:34,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:34,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-09 00:50:34,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:34,319 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 [2025-03-09 00:50:34,387 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-09 00:50:34,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-09 00:50:34,392 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 [2025-03-09 00:50:34,463 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:34,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:34,501 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:34,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:34,530 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:34,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:34,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-09 00:50:34,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:34,542 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:50:34,548 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1451 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1451) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2025-03-09 00:50:34,574 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1451 (Array Int Int)) (v_ArrVal_1450 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1450))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1451)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-09 00:50:34,578 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1451 (Array Int Int)) (v_ArrVal_1450 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1450))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1451)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-09 00:50:34,608 INFO L349 Elim1Store]: treesize reduction 5, result has 90.6 percent of original size [2025-03-09 00:50:34,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 56 [2025-03-09 00:50:34,613 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1451 (Array Int Int)) (v_ArrVal_1450 (Array Int Int))) (= (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1454))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1450)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1451)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem50#1.base|)) is different from false [2025-03-09 00:50:34,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710464245] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:34,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:50:34,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 18 [2025-03-09 00:50:34,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251865515] [2025-03-09 00:50:34,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:50:34,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 00:50:34,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:34,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 00:50:34,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=317, Unknown=11, NotChecked=156, Total=552 [2025-03-09 00:50:34,619 INFO L87 Difference]: Start difference. First operand 1563 states and 2000 transitions. Second operand has 19 states, 17 states have (on average 8.0) internal successors, (136), 19 states have internal predecessors, (136), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:50:36,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:36,211 INFO L93 Difference]: Finished difference Result 1565 states and 2008 transitions. [2025-03-09 00:50:36,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 00:50:36,211 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 8.0) internal successors, (136), 19 states have internal predecessors, (136), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 91 [2025-03-09 00:50:36,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:36,214 INFO L225 Difference]: With dead ends: 1565 [2025-03-09 00:50:36,214 INFO L226 Difference]: Without dead ends: 1565 [2025-03-09 00:50:36,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=627, Unknown=12, NotChecked=220, Total=992 [2025-03-09 00:50:36,214 INFO L435 NwaCegarLoop]: 703 mSDtfsCounter, 1131 mSDsluCounter, 5442 mSDsCounter, 0 mSdLazyCounter, 4837 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 6145 SdHoareTripleChecker+Invalid, 4863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 4837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:36,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 6145 Invalid, 4863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 4837 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-09 00:50:36,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2025-03-09 00:50:36,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1541. [2025-03-09 00:50:36,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1161 states have (on average 1.685615848406546) internal successors, (1957), 1529 states have internal predecessors, (1957), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 1975 transitions. [2025-03-09 00:50:36,228 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 1975 transitions. Word has length 91 [2025-03-09 00:50:36,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:36,228 INFO L471 AbstractCegarLoop]: Abstraction has 1541 states and 1975 transitions. [2025-03-09 00:50:36,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 8.0) internal successors, (136), 19 states have internal predecessors, (136), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:50:36,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 1975 transitions. [2025-03-09 00:50:36,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-09 00:50:36,231 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:36,231 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:36,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 00:50:36,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:36,432 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr518REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:36,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash 887336483, now seen corresponding path program 1 times [2025-03-09 00:50:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:36,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071887761] [2025-03-09 00:50:36,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:36,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:36,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-09 00:50:36,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-09 00:50:36,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:36,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:36,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:36,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071887761] [2025-03-09 00:50:36,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071887761] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:36,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:36,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-09 00:50:36,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667753940] [2025-03-09 00:50:36,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:36,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 00:50:36,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:36,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 00:50:36,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-03-09 00:50:36,914 INFO L87 Difference]: Start difference. First operand 1541 states and 1975 transitions. Second operand has 16 states, 14 states have (on average 6.5) internal successors, (91), 15 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:38,703 INFO L93 Difference]: Finished difference Result 1572 states and 2016 transitions. [2025-03-09 00:50:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 00:50:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.5) internal successors, (91), 15 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2025-03-09 00:50:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:38,705 INFO L225 Difference]: With dead ends: 1572 [2025-03-09 00:50:38,705 INFO L226 Difference]: Without dead ends: 1572 [2025-03-09 00:50:38,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2025-03-09 00:50:38,706 INFO L435 NwaCegarLoop]: 702 mSDtfsCounter, 1155 mSDsluCounter, 6127 mSDsCounter, 0 mSdLazyCounter, 5385 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 6829 SdHoareTripleChecker+Invalid, 5406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 5385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:38,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 6829 Invalid, 5406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 5385 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-09 00:50:38,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2025-03-09 00:50:38,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1568. [2025-03-09 00:50:38,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1187 states have (on average 1.6731255265374894) internal successors, (1986), 1554 states have internal predecessors, (1986), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2025-03-09 00:50:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2006 transitions. [2025-03-09 00:50:38,719 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2006 transitions. Word has length 93 [2025-03-09 00:50:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:38,719 INFO L471 AbstractCegarLoop]: Abstraction has 1568 states and 2006 transitions. [2025-03-09 00:50:38,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.5) internal successors, (91), 15 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:38,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2006 transitions. [2025-03-09 00:50:38,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-09 00:50:38,720 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:38,720 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:38,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-09 00:50:38,720 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:38,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:38,721 INFO L85 PathProgramCache]: Analyzing trace with hash 887336484, now seen corresponding path program 1 times [2025-03-09 00:50:38,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:38,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132848365] [2025-03-09 00:50:38,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:38,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:38,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-09 00:50:38,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-09 00:50:38,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:38,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:39,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:39,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132848365] [2025-03-09 00:50:39,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132848365] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:39,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:39,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-09 00:50:39,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748856883] [2025-03-09 00:50:39,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:39,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 00:50:39,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:39,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 00:50:39,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-03-09 00:50:39,371 INFO L87 Difference]: Start difference. First operand 1568 states and 2006 transitions. Second operand has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 13 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:41,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:41,117 INFO L93 Difference]: Finished difference Result 1571 states and 2014 transitions. [2025-03-09 00:50:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 00:50:41,118 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 13 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2025-03-09 00:50:41,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:41,119 INFO L225 Difference]: With dead ends: 1571 [2025-03-09 00:50:41,119 INFO L226 Difference]: Without dead ends: 1571 [2025-03-09 00:50:41,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2025-03-09 00:50:41,120 INFO L435 NwaCegarLoop]: 709 mSDtfsCounter, 1165 mSDsluCounter, 4060 mSDsCounter, 0 mSdLazyCounter, 4967 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 4769 SdHoareTripleChecker+Invalid, 4986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 4967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:41,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 4769 Invalid, 4986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 4967 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-09 00:50:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2025-03-09 00:50:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1568. [2025-03-09 00:50:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1187 states have (on average 1.6714406065711878) internal successors, (1984), 1554 states have internal predecessors, (1984), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2025-03-09 00:50:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2004 transitions. [2025-03-09 00:50:41,132 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2004 transitions. Word has length 93 [2025-03-09 00:50:41,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:41,133 INFO L471 AbstractCegarLoop]: Abstraction has 1568 states and 2004 transitions. [2025-03-09 00:50:41,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 13 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:41,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2004 transitions. [2025-03-09 00:50:41,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-09 00:50:41,144 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:41,144 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:41,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-09 00:50:41,144 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr518REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:41,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:41,144 INFO L85 PathProgramCache]: Analyzing trace with hash -880401455, now seen corresponding path program 1 times [2025-03-09 00:50:41,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:41,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499605230] [2025-03-09 00:50:41,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:41,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:41,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-09 00:50:41,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-09 00:50:41,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:41,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:41,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:41,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:41,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499605230] [2025-03-09 00:50:41,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499605230] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:41,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843964951] [2025-03-09 00:50:41,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:41,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:41,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:41,497 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:50:41,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 00:50:41,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-09 00:50:41,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-09 00:50:41,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:41,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:41,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-09 00:50:41,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:41,672 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 [2025-03-09 00:50:41,727 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-09 00:50:41,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-09 00:50:41,739 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 [2025-03-09 00:50:41,790 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:41,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:41,819 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:41,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:41,854 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:41,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:41,884 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:41,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:41,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-09 00:50:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:41,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:50:41,923 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1753 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1753) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2025-03-09 00:50:41,927 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1753 (Array Int Int)) (v_ArrVal_1752 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1752))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1753)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-09 00:50:41,931 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1753 (Array Int Int)) (v_ArrVal_1752 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1752))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1753)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-09 00:50:41,936 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1753 (Array Int Int)) (v_ArrVal_1752 (Array Int Int)) (v_ArrVal_1751 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1751))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1752)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1753)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-09 00:50:41,940 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1753 (Array Int Int)) (v_ArrVal_1752 (Array Int Int)) (v_ArrVal_1751 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1751))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1752)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1753)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-09 00:50:41,967 INFO L349 Elim1Store]: treesize reduction 5, result has 95.0 percent of original size [2025-03-09 00:50:41,967 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 105 treesize of output 104 [2025-03-09 00:50:41,982 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1756 (Array Int Int)) (v_ArrVal_1753 (Array Int Int)) (v_ArrVal_1752 (Array Int Int)) (v_ArrVal_1751 (Array Int Int))) (= (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1756))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1751)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1752)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1753)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem50#1.base|)) is different from false [2025-03-09 00:50:41,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843964951] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:41,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:50:41,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 20 [2025-03-09 00:50:41,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775255284] [2025-03-09 00:50:41,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:50:41,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-09 00:50:41,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:41,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-09 00:50:41,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=386, Unknown=18, NotChecked=270, Total=756 [2025-03-09 00:50:41,984 INFO L87 Difference]: Start difference. First operand 1568 states and 2004 transitions. Second operand has 21 states, 19 states have (on average 7.421052631578948) internal successors, (141), 21 states have internal predecessors, (141), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:50:44,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:44,029 INFO L93 Difference]: Finished difference Result 1570 states and 2012 transitions. [2025-03-09 00:50:44,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 00:50:44,029 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 7.421052631578948) internal successors, (141), 21 states have internal predecessors, (141), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 94 [2025-03-09 00:50:44,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:44,031 INFO L225 Difference]: With dead ends: 1570 [2025-03-09 00:50:44,031 INFO L226 Difference]: Without dead ends: 1570 [2025-03-09 00:50:44,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=776, Unknown=25, NotChecked=378, Total=1332 [2025-03-09 00:50:44,032 INFO L435 NwaCegarLoop]: 702 mSDtfsCounter, 1133 mSDsluCounter, 7490 mSDsCounter, 0 mSdLazyCounter, 6434 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 8192 SdHoareTripleChecker+Invalid, 6454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 6434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:44,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 8192 Invalid, 6454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 6434 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-09 00:50:44,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2025-03-09 00:50:44,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1567. [2025-03-09 00:50:44,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1187 states have (on average 1.6697556866048862) internal successors, (1982), 1553 states have internal predecessors, (1982), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2025-03-09 00:50:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2002 transitions. [2025-03-09 00:50:44,047 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2002 transitions. Word has length 94 [2025-03-09 00:50:44,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:44,047 INFO L471 AbstractCegarLoop]: Abstraction has 1567 states and 2002 transitions. [2025-03-09 00:50:44,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 7.421052631578948) internal successors, (141), 21 states have internal predecessors, (141), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:50:44,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2002 transitions. [2025-03-09 00:50:44,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-09 00:50:44,047 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:44,047 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:44,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 00:50:44,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:44,248 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:44,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:44,248 INFO L85 PathProgramCache]: Analyzing trace with hash -880401454, now seen corresponding path program 1 times [2025-03-09 00:50:44,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:44,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185950025] [2025-03-09 00:50:44,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:44,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:44,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-09 00:50:44,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-09 00:50:44,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:44,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:44,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:44,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185950025] [2025-03-09 00:50:44,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185950025] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:44,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895825260] [2025-03-09 00:50:44,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:44,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:44,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:44,819 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:50:44,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 00:50:44,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-09 00:50:45,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-09 00:50:45,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:45,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:45,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-03-09 00:50:45,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:45,022 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 [2025-03-09 00:50:45,085 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-09 00:50:45,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-09 00:50:45,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-09 00:50:45,104 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 [2025-03-09 00:50:45,107 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 [2025-03-09 00:50:45,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-09 00:50:45,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-09 00:50:45,233 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:45,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-09 00:50:45,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-09 00:50:45,281 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2025-03-09 00:50:45,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 39 [2025-03-09 00:50:45,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-09 00:50:45,355 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2025-03-09 00:50:45,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 64 [2025-03-09 00:50:45,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-09 00:50:45,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-03-09 00:50:45,406 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:45,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-09 00:50:45,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-09 00:50:45,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-09 00:50:45,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-09 00:50:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:45,445 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:50:45,486 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1922 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1922) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20))) (forall ((v_ArrVal_1922 (Array Int Int)) (v_ArrVal_1921 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1922) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1921) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-03-09 00:50:45,491 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1922 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1922) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))) (forall ((v_ArrVal_1922 (Array Int Int)) (v_ArrVal_1921 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1922) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1921) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2025-03-09 00:50:45,503 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1922 (Array Int Int)) (v_ArrVal_1921 (Array Int Int)) (v_ArrVal_1920 (Array Int Int)) (v_ArrVal_1919 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1920))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1919) .cse0 v_ArrVal_1922) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1921) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1922 (Array Int Int)) (v_ArrVal_1920 (Array Int Int)) (v_ArrVal_1919 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1919) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1920) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1922) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))))) is different from false [2025-03-09 00:50:45,564 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8)) (.cse3 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base|))) (and (forall ((v_ArrVal_1922 (Array Int Int)) (|ULTIMATE.start_main_#t~mem52#1.offset| Int) (v_ArrVal_1920 (Array Int Int)) (v_ArrVal_1919 (Array Int Int)) (v_ArrVal_1917 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| (store .cse3 (+ |ULTIMATE.start_main_#t~mem52#1.offset| 16) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1917) .cse0 v_ArrVal_1919) (select (select (store .cse1 .cse0 v_ArrVal_1920) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1922))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))) (forall ((v_ArrVal_1922 (Array Int Int)) (v_ArrVal_1921 (Array Int Int)) (|ULTIMATE.start_main_#t~mem52#1.offset| Int) (v_ArrVal_1920 (Array Int Int)) (v_ArrVal_1919 (Array Int Int)) (v_ArrVal_1917 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| (store .cse3 (+ |ULTIMATE.start_main_#t~mem52#1.offset| 16) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_1920))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1917) .cse4 v_ArrVal_1919) .cse5 v_ArrVal_1922) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_1921) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) is different from false [2025-03-09 00:50:45,729 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1922 (Array Int Int)) (v_ArrVal_1921 (Array Int Int)) (|ULTIMATE.start_main_#t~mem52#1.offset| Int) (v_ArrVal_1920 (Array Int Int)) (v_ArrVal_1919 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1917 (Array Int Int)) (v_ArrVal_1927 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1927))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 (store (select .cse6 .cse0) (+ |ULTIMATE.start_main_#t~mem52#1.offset| 16) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_1920))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1928) .cse0 v_ArrVal_1917) .cse1 v_ArrVal_1919) .cse2 v_ArrVal_1922) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_1921) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_1922 (Array Int Int)) (|ULTIMATE.start_main_#t~mem52#1.offset| Int) (v_ArrVal_1920 (Array Int Int)) (v_ArrVal_1919 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1917 (Array Int Int)) (v_ArrVal_1927 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1927))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse7 (store (select .cse10 .cse7) (+ |ULTIMATE.start_main_#t~mem52#1.offset| 16) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1928) .cse7 v_ArrVal_1917) .cse8 v_ArrVal_1919) (select (select (store .cse9 .cse8 v_ArrVal_1920) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1922))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 20))))) is different from false [2025-03-09 00:50:45,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895825260] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:45,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:50:45,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2025-03-09 00:50:45,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276257699] [2025-03-09 00:50:45,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:50:45,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-09 00:50:45,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:45,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-09 00:50:45,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=689, Unknown=16, NotChecked=290, Total=1122 [2025-03-09 00:50:45,733 INFO L87 Difference]: Start difference. First operand 1567 states and 2002 transitions. Second operand has 25 states, 22 states have (on average 6.818181818181818) internal successors, (150), 25 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:50:49,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:49,593 INFO L93 Difference]: Finished difference Result 1569 states and 2010 transitions. [2025-03-09 00:50:49,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 00:50:49,593 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 6.818181818181818) internal successors, (150), 25 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 94 [2025-03-09 00:50:49,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:49,595 INFO L225 Difference]: With dead ends: 1569 [2025-03-09 00:50:49,595 INFO L226 Difference]: Without dead ends: 1569 [2025-03-09 00:50:49,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=1121, Unknown=16, NotChecked=370, Total=1722 [2025-03-09 00:50:49,596 INFO L435 NwaCegarLoop]: 707 mSDtfsCounter, 1135 mSDsluCounter, 6959 mSDsCounter, 0 mSdLazyCounter, 9425 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 7666 SdHoareTripleChecker+Invalid, 9453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 9425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:49,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 7666 Invalid, 9453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 9425 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2025-03-09 00:50:49,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2025-03-09 00:50:49,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1539. [2025-03-09 00:50:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1161 states have (on average 1.682170542635659) internal successors, (1953), 1527 states have internal predecessors, (1953), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:49,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1971 transitions. [2025-03-09 00:50:49,607 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1971 transitions. Word has length 94 [2025-03-09 00:50:49,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:49,607 INFO L471 AbstractCegarLoop]: Abstraction has 1539 states and 1971 transitions. [2025-03-09 00:50:49,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 6.818181818181818) internal successors, (150), 25 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:50:49,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1971 transitions. [2025-03-09 00:50:49,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-09 00:50:49,608 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:49,608 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:49,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 00:50:49,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-09 00:50:49,809 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr514REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:49,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:49,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1550331171, now seen corresponding path program 1 times [2025-03-09 00:50:49,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:49,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127790938] [2025-03-09 00:50:49,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:49,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:49,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-09 00:50:49,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-09 00:50:49,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:49,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:50,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:50,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127790938] [2025-03-09 00:50:50,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127790938] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:50,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:50,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-09 00:50:50,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317932708] [2025-03-09 00:50:50,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:50,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-09 00:50:50,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:50,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-09 00:50:50,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2025-03-09 00:50:50,295 INFO L87 Difference]: Start difference. First operand 1539 states and 1971 transitions. Second operand has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 16 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:52,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:52,196 INFO L93 Difference]: Finished difference Result 1578 states and 2020 transitions. [2025-03-09 00:50:52,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 00:50:52,196 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 16 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2025-03-09 00:50:52,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:52,198 INFO L225 Difference]: With dead ends: 1578 [2025-03-09 00:50:52,198 INFO L226 Difference]: Without dead ends: 1578 [2025-03-09 00:50:52,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2025-03-09 00:50:52,199 INFO L435 NwaCegarLoop]: 701 mSDtfsCounter, 1150 mSDsluCounter, 5448 mSDsCounter, 0 mSdLazyCounter, 4877 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 6149 SdHoareTripleChecker+Invalid, 4899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 4877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:52,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 6149 Invalid, 4899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 4877 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-09 00:50:52,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2025-03-09 00:50:52,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1574. [2025-03-09 00:50:52,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1195 states have (on average 1.6652719665271967) internal successors, (1990), 1560 states have internal predecessors, (1990), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2025-03-09 00:50:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2010 transitions. [2025-03-09 00:50:52,212 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2010 transitions. Word has length 97 [2025-03-09 00:50:52,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:52,212 INFO L471 AbstractCegarLoop]: Abstraction has 1574 states and 2010 transitions. [2025-03-09 00:50:52,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 16 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:52,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2010 transitions. [2025-03-09 00:50:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-09 00:50:52,213 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:52,213 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:52,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-09 00:50:52,213 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr515REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:52,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:52,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1550331170, now seen corresponding path program 1 times [2025-03-09 00:50:52,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:52,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431322895] [2025-03-09 00:50:52,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:52,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:52,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-09 00:50:52,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-09 00:50:52,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:52,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:52,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:52,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431322895] [2025-03-09 00:50:52,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431322895] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:52,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:52,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-09 00:50:52,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238393883] [2025-03-09 00:50:52,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:52,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 00:50:52,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:52,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 00:50:52,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2025-03-09 00:50:52,985 INFO L87 Difference]: Start difference. First operand 1574 states and 2010 transitions. Second operand has 18 states, 16 states have (on average 5.9375) internal successors, (95), 17 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:55,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:55,713 INFO L93 Difference]: Finished difference Result 1577 states and 2018 transitions. [2025-03-09 00:50:55,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 00:50:55,713 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.9375) internal successors, (95), 17 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2025-03-09 00:50:55,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:55,715 INFO L225 Difference]: With dead ends: 1577 [2025-03-09 00:50:55,715 INFO L226 Difference]: Without dead ends: 1577 [2025-03-09 00:50:55,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2025-03-09 00:50:55,716 INFO L435 NwaCegarLoop]: 702 mSDtfsCounter, 1151 mSDsluCounter, 5581 mSDsCounter, 0 mSdLazyCounter, 7174 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 6283 SdHoareTripleChecker+Invalid, 7199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 7174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:55,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 6283 Invalid, 7199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 7174 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-09 00:50:55,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2025-03-09 00:50:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1574. [2025-03-09 00:50:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1195 states have (on average 1.6635983263598326) internal successors, (1988), 1560 states have internal predecessors, (1988), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2025-03-09 00:50:55,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2008 transitions. [2025-03-09 00:50:55,731 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2008 transitions. Word has length 97 [2025-03-09 00:50:55,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:55,731 INFO L471 AbstractCegarLoop]: Abstraction has 1574 states and 2008 transitions. [2025-03-09 00:50:55,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.9375) internal successors, (95), 17 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:50:55,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2008 transitions. [2025-03-09 00:50:55,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-09 00:50:55,732 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:55,732 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:55,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-09 00:50:55,732 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr514REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:55,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:55,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1819557493, now seen corresponding path program 1 times [2025-03-09 00:50:55,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:55,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517362033] [2025-03-09 00:50:55,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:55,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:55,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-09 00:50:55,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-09 00:50:55,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:55,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:56,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:56,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517362033] [2025-03-09 00:50:56,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517362033] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:56,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535214902] [2025-03-09 00:50:56,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:56,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:56,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:56,205 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:50:56,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 00:50:56,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-09 00:50:56,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-09 00:50:56,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:56,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:56,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-09 00:50:56,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:56,398 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 [2025-03-09 00:50:56,455 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-09 00:50:56,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-09 00:50:56,459 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 [2025-03-09 00:50:56,504 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:56,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:56,532 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:56,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:56,558 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:56,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:56,584 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:56,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:56,611 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:50:56,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-09 00:50:56,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-09 00:50:56,624 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-03-09 00:50:56,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-03-09 00:50:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:56,634 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:50:56,672 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2260 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2260) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2025-03-09 00:50:56,677 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2259 (Array Int Int)) (v_ArrVal_2260 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2259))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2260)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-09 00:50:56,700 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2259 (Array Int Int)) (v_ArrVal_2258 (Array Int Int)) (v_ArrVal_2260 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_2258))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2259)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2260)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-09 00:50:56,741 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2259 (Array Int Int)) (v_ArrVal_2258 (Array Int Int)) (v_ArrVal_2257 (Array Int Int)) (v_ArrVal_2260 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2257))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2258)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2259)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2260)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-09 00:50:56,745 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2259 (Array Int Int)) (v_ArrVal_2258 (Array Int Int)) (v_ArrVal_2257 (Array Int Int)) (v_ArrVal_2260 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2257))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2258)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2259)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2260)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-09 00:50:56,769 INFO L349 Elim1Store]: treesize reduction 5, result has 97.5 percent of original size [2025-03-09 00:50:56,769 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 201 treesize of output 200 [2025-03-09 00:50:56,774 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2259 (Array Int Int)) (v_ArrVal_2258 (Array Int Int)) (v_ArrVal_2257 (Array Int Int)) (v_ArrVal_2264 (Array Int Int)) (v_ArrVal_2260 (Array Int Int))) (= (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_2264))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2257)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2258)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2259)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2260)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem50#1.base|)) is different from false [2025-03-09 00:50:56,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535214902] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:56,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:50:56,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 22 [2025-03-09 00:50:56,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455341335] [2025-03-09 00:50:56,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:50:56,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 00:50:56,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:50:56,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 00:50:56,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=545, Unknown=18, NotChecked=318, Total=992 [2025-03-09 00:50:56,776 INFO L87 Difference]: Start difference. First operand 1574 states and 2008 transitions. Second operand has 23 states, 21 states have (on average 7.0) internal successors, (147), 23 states have internal predecessors, (147), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:50:58,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:58,763 INFO L93 Difference]: Finished difference Result 1576 states and 2016 transitions. [2025-03-09 00:50:58,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-09 00:50:58,764 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 7.0) internal successors, (147), 23 states have internal predecessors, (147), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 98 [2025-03-09 00:50:58,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:58,766 INFO L225 Difference]: With dead ends: 1576 [2025-03-09 00:50:58,767 INFO L226 Difference]: Without dead ends: 1576 [2025-03-09 00:50:58,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=1060, Unknown=18, NotChecked=438, Total=1722 [2025-03-09 00:50:58,767 INFO L435 NwaCegarLoop]: 701 mSDtfsCounter, 1134 mSDsluCounter, 6840 mSDsCounter, 0 mSdLazyCounter, 5914 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 7541 SdHoareTripleChecker+Invalid, 5935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 5914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:58,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 7541 Invalid, 5935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 5914 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-09 00:50:58,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2025-03-09 00:50:58,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1573. [2025-03-09 00:50:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1195 states have (on average 1.6619246861924686) internal successors, (1986), 1559 states have internal predecessors, (1986), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2025-03-09 00:50:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2006 transitions. [2025-03-09 00:50:58,786 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2006 transitions. Word has length 98 [2025-03-09 00:50:58,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:58,787 INFO L471 AbstractCegarLoop]: Abstraction has 1573 states and 2006 transitions. [2025-03-09 00:50:58,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 7.0) internal successors, (147), 23 states have internal predecessors, (147), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:50:58,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2006 transitions. [2025-03-09 00:50:58,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-09 00:50:58,788 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:58,788 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:58,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-09 00:50:58,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:58,988 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr515REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:50:58,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:58,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1819557492, now seen corresponding path program 1 times [2025-03-09 00:50:58,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:50:58,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207389385] [2025-03-09 00:50:58,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:58,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:50:59,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-09 00:50:59,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-09 00:50:59,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:59,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:59,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:50:59,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207389385] [2025-03-09 00:50:59,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207389385] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:50:59,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982094807] [2025-03-09 00:50:59,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:59,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:59,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:59,688 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:50:59,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 00:50:59,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-09 00:50:59,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-09 00:50:59,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:59,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:59,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-03-09 00:50:59,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:59,886 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 [2025-03-09 00:50:59,944 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 [2025-03-09 00:50:59,953 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-09 00:50:59,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-09 00:50:59,970 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 [2025-03-09 00:50:59,974 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 [2025-03-09 00:51:00,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-09 00:51:00,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-09 00:51:00,134 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:51:00,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-03-09 00:51:00,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-09 00:51:00,247 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:51:00,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-03-09 00:51:00,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-09 00:51:00,341 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:51:00,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-03-09 00:51:00,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-09 00:51:00,445 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:51:00,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-03-09 00:51:00,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-09 00:51:00,514 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:51:00,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-03-09 00:51:00,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-09 00:51:00,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 18 [2025-03-09 00:51:00,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-09 00:51:00,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:51:00,581 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2025-03-09 00:51:00,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 21 [2025-03-09 00:51:00,587 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-09 00:51:00,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-09 00:51:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:00,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:51:00,856 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0))) (forall ((v_ArrVal_2447 (Array Int Int)) (v_ArrVal_2446 (Array Int Int)) (v_ArrVal_2445 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2446) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2445) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2447) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 1)))) (forall ((v_ArrVal_2448 (Array Int Int)) (v_ArrVal_2447 (Array Int Int)) (v_ArrVal_2446 (Array Int Int)) (v_ArrVal_2445 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)) (forall ((v_ArrVal_2449 Int)) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2445))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2446) .cse1 v_ArrVal_2447) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc57#1.base_7| v_ArrVal_2449) (select (select (store .cse2 .cse1 v_ArrVal_2448) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))))) is different from false [2025-03-09 00:51:01,154 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (or (forall ((v_ArrVal_2447 (Array Int Int)) (v_ArrVal_2446 (Array Int Int)) (v_ArrVal_2445 (Array Int Int)) (v_ArrVal_2444 (Array Int Int)) (v_ArrVal_2443 (Array Int Int))) (< 0 (+ (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2444))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2443) .cse1 v_ArrVal_2446) (select (select (store .cse2 .cse1 v_ArrVal_2445) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2447))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)))) (forall ((v_ArrVal_2448 (Array Int Int)) (v_ArrVal_2447 (Array Int Int)) (v_ArrVal_2446 (Array Int Int)) (v_ArrVal_2445 (Array Int Int)) (v_ArrVal_2444 (Array Int Int)) (v_ArrVal_2443 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int)) (or (forall ((v_ArrVal_2449 Int)) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2444))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_2445))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2443) .cse4 v_ArrVal_2446) .cse5 v_ArrVal_2447) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc57#1.base_7| v_ArrVal_2449) (select (select (store .cse6 .cse5 v_ArrVal_2448) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0))))))) is different from false [2025-03-09 00:51:01,191 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0))) (forall ((v_ArrVal_2447 (Array Int Int)) (v_ArrVal_2446 (Array Int Int)) (v_ArrVal_2445 (Array Int Int)) (v_ArrVal_2444 (Array Int Int)) (v_ArrVal_2443 (Array Int Int)) (v_ArrVal_2442 (Array Int Int)) (v_ArrVal_2441 (Array Int Int))) (< 0 (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2441))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_2444))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2442) .cse0 v_ArrVal_2443) .cse1 v_ArrVal_2446) (select (select (store .cse2 .cse1 v_ArrVal_2445) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2447))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1)))) (forall ((v_ArrVal_2448 (Array Int Int)) (v_ArrVal_2447 (Array Int Int)) (v_ArrVal_2446 (Array Int Int)) (v_ArrVal_2445 (Array Int Int)) (v_ArrVal_2444 (Array Int Int)) (v_ArrVal_2443 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int) (v_ArrVal_2442 (Array Int Int)) (v_ArrVal_2441 (Array Int Int))) (or (forall ((v_ArrVal_2449 Int)) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2441))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_2444))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_2445))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2442) .cse5 v_ArrVal_2443) .cse6 v_ArrVal_2446) .cse7 v_ArrVal_2447) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc57#1.base_7| v_ArrVal_2449) (select (select (store .cse8 .cse7 v_ArrVal_2448) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)))))) is different from false [2025-03-09 00:51:02,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 00:51:02,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 604 treesize of output 622 [2025-03-09 00:51:02,311 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_prenex_29 Int) (v_ArrVal_2448 (Array Int Int)) (v_prenex_31 (Array Int Int)) (v_prenex_30 (Array Int Int)) (v_prenex_25 (Array Int Int)) (v_prenex_24 (Array Int Int)) (v_prenex_23 (Array Int Int)) (v_prenex_22 (Array Int Int)) (v_ArrVal_2449 Int) (v_prenex_28 (Array Int Int)) (v_prenex_27 (Array Int Int)) (v_prenex_26 (Array Int Int))) (or (let ((.cse8 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_prenex_25))) (let ((.cse0 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse0 v_prenex_31))) (let ((.cse1 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse6 (store .cse7 .cse1 v_prenex_26))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse5 (store .cse6 .cse2 v_prenex_24))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (< (+ (select (select (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_prenex_27) .cse0 v_prenex_30) .cse1 v_prenex_28) .cse2 v_prenex_23) .cse3 v_prenex_22) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 3) (select (store |c_#length| v_prenex_29 v_ArrVal_2449) (select (select (store .cse5 .cse3 v_ArrVal_2448) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) (= |c_ULTIMATE.start_main_#t~mem50#1.base| v_prenex_29))) (forall ((v_ArrVal_2447 (Array Int Int)) (v_ArrVal_2446 (Array Int Int)) (v_ArrVal_2445 (Array Int Int)) (v_ArrVal_2455 (Array Int Int)) (v_ArrVal_2444 (Array Int Int)) (v_ArrVal_2454 (Array Int Int)) (v_ArrVal_2443 (Array Int Int)) (v_ArrVal_2442 (Array Int Int)) (v_ArrVal_2441 (Array Int Int))) (< 0 (+ (select (select (let ((.cse14 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_2455))) (let ((.cse9 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse13 (store .cse14 .cse9 v_ArrVal_2441))) (let ((.cse10 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse12 (store .cse13 .cse10 v_ArrVal_2444))) (let ((.cse11 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_2454) .cse9 v_ArrVal_2442) .cse10 v_ArrVal_2443) .cse11 v_ArrVal_2446) (select (select (store .cse12 .cse11 v_ArrVal_2445) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_2447))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1))))) is different from false [2025-03-09 00:51:02,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982094807] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:51:02,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:51:02,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 31 [2025-03-09 00:51:02,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320100329] [2025-03-09 00:51:02,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:51:02,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-09 00:51:02,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:51:02,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-09 00:51:02,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1364, Unknown=28, NotChecked=316, Total=1892 [2025-03-09 00:51:02,318 INFO L87 Difference]: Start difference. First operand 1573 states and 2006 transitions. Second operand has 32 states, 29 states have (on average 5.448275862068965) internal successors, (158), 30 states have internal predecessors, (158), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:51:08,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:08,543 INFO L93 Difference]: Finished difference Result 1575 states and 2014 transitions. [2025-03-09 00:51:08,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-09 00:51:08,543 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 5.448275862068965) internal successors, (158), 30 states have internal predecessors, (158), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 98 [2025-03-09 00:51:08,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:08,545 INFO L225 Difference]: With dead ends: 1575 [2025-03-09 00:51:08,545 INFO L226 Difference]: Without dead ends: 1575 [2025-03-09 00:51:08,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=318, Invalid=2120, Unknown=28, NotChecked=396, Total=2862 [2025-03-09 00:51:08,546 INFO L435 NwaCegarLoop]: 700 mSDtfsCounter, 1137 mSDsluCounter, 8240 mSDsCounter, 0 mSdLazyCounter, 10545 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 8940 SdHoareTripleChecker+Invalid, 10573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 10545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:08,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 8940 Invalid, 10573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 10545 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2025-03-09 00:51:08,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2025-03-09 00:51:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1537. [2025-03-09 00:51:08,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1161 states have (on average 1.6787252368647718) internal successors, (1949), 1525 states have internal predecessors, (1949), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:51:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 1967 transitions. [2025-03-09 00:51:08,559 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 1967 transitions. Word has length 98 [2025-03-09 00:51:08,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:08,559 INFO L471 AbstractCegarLoop]: Abstraction has 1537 states and 1967 transitions. [2025-03-09 00:51:08,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 5.448275862068965) internal successors, (158), 30 states have internal predecessors, (158), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:51:08,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 1967 transitions. [2025-03-09 00:51:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-09 00:51:08,561 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:08,561 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:51:08,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 00:51:08,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-09 00:51:08,762 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:51:08,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:08,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2131342208, now seen corresponding path program 1 times [2025-03-09 00:51:08,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:51:08,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490680544] [2025-03-09 00:51:08,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:08,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:51:08,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-09 00:51:08,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-09 00:51:08,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:08,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:09,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:51:09,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490680544] [2025-03-09 00:51:09,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490680544] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:09,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:09,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-09 00:51:09,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445387265] [2025-03-09 00:51:09,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:09,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 00:51:09,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:51:09,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 00:51:09,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2025-03-09 00:51:09,216 INFO L87 Difference]: Start difference. First operand 1537 states and 1967 transitions. Second operand has 15 states, 14 states have (on average 7.0) internal successors, (98), 15 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:51:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:12,114 INFO L93 Difference]: Finished difference Result 1582 states and 2022 transitions. [2025-03-09 00:51:12,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 00:51:12,115 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.0) internal successors, (98), 15 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2025-03-09 00:51:12,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:12,117 INFO L225 Difference]: With dead ends: 1582 [2025-03-09 00:51:12,117 INFO L226 Difference]: Without dead ends: 1582 [2025-03-09 00:51:12,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2025-03-09 00:51:12,117 INFO L435 NwaCegarLoop]: 706 mSDtfsCounter, 1152 mSDsluCounter, 7523 mSDsCounter, 0 mSdLazyCounter, 6372 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 8229 SdHoareTripleChecker+Invalid, 6392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 6372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:12,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 8229 Invalid, 6392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 6372 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-09 00:51:12,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2025-03-09 00:51:12,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1578. [2025-03-09 00:51:12,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1201 states have (on average 1.658617818484596) internal successors, (1992), 1564 states have internal predecessors, (1992), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2025-03-09 00:51:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2012 transitions. [2025-03-09 00:51:12,126 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2012 transitions. Word has length 100 [2025-03-09 00:51:12,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:12,127 INFO L471 AbstractCegarLoop]: Abstraction has 1578 states and 2012 transitions. [2025-03-09 00:51:12,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.0) internal successors, (98), 15 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:51:12,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2012 transitions. [2025-03-09 00:51:12,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-09 00:51:12,127 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:12,127 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:51:12,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-09 00:51:12,127 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr511REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:51:12,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:12,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2131342207, now seen corresponding path program 1 times [2025-03-09 00:51:12,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:51:12,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236895324] [2025-03-09 00:51:12,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:12,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:51:12,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-09 00:51:12,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-09 00:51:12,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:12,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:12,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:51:12,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236895324] [2025-03-09 00:51:12,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236895324] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:12,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:12,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-03-09 00:51:12,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255250374] [2025-03-09 00:51:12,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:12,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 00:51:12,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:51:12,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 00:51:12,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2025-03-09 00:51:12,970 INFO L87 Difference]: Start difference. First operand 1578 states and 2012 transitions. Second operand has 19 states, 17 states have (on average 5.764705882352941) internal successors, (98), 18 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)